DNS Settings

Jun 25, 2007

Our business is in the middle of changing to a Exchange based Email Platform which will be take effect in a few months, NOT NOW but planning ahead I'm trying to help with the DNS issues behind the scene. The current Host and Registerar is flarehosting. However I have just transferred the Domain Name to my NAMECHEAP account and need to take over the DNS Controls. I want to make SURE this is done without ANY downtime for the company (website, current email system). After contacting the current host for correct settings I have 3 things I need help with.

newerafinance.com (Used for Domain)
mail.newerafinance.com (Used for WebBased Email AND pop/smtp)
MX is mail2.uploadmysite.com

I was told with the above info I need to setup ARecords, CNAME, and URL Redirect and MX records. Before I try this myself Id like some help with how this should be setup.

Exchange server will up at a future date so we need the current Email system to remain the same. Half of our users use pop/smtp and other half web based email.

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Dns Settings

Jul 1, 2007

how to set up dns correctly as I have been trying for over a day now and not succeeded!

The situation is that I am using whm/cpanel. I have a domain hosted with godaddy that I want to point at my vps space. I have entered the nameservers into godaddy, and it now shows the placeholder page when I go to my domain.

I have set-up a user with ftp access to my main domain in whm, and uploaded an index page to test.

If I type in my domain name it goes to the godaddy placeholder page, if I type in the IP address it goes to an apache 'great success' page, and if I go to the same IP but with the users name added, it goes to the index file I uploaded.

I have played around with dns zones and A records but cannot get the index page to show when I enter my main domain name.

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PHP Settings

Aug 20, 2007

Does the following setting of PHP look normal in a shared hosting environment?

disable_functions ini_alter,system,passthru,shell_exec,leak,listen,chgrp,apache_setenv,define_syslog_variables,openlog,syslog,ftp_exec ini_alter,system,passthru,shell_exec,leak,listen,chgrp,apache_setenv,define_syslog_variables,openlog,syslog,ftp_exec

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Max Client Settings

Jan 15, 2008

Now my site online users went more that 200,my max client is 200 now server load slow can i increase the max client to 250,

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Changing Settings For Php.ini On IIS

Jan 29, 2008

I have IIS on my computer and I want to start using a php driven forum (SMF) on my web site. Before I upload the files I need to check the following settings are on:

the engine directive must be On.

the magic_quotes_sybase directive must be set to Off.

the session.save_path directive must be set to a valid directory, or empty.

the file_uploads directive must be On.

the upload_tmp_dir must be set to a valid directory, or empty.

I cant find anywhere within IIS where these directions maybe found. Can anyone point me in the right direction?

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How To Set The SPF Correctly Settings For My VPS

Jan 28, 2008

I am being rejected by Hotmail when sending mail from my VPS. I want to send mails from punbb and OSCommerce, with various website hosted on one VPS/Cpanel/LAMP solution. And with sendmail or SMTP, it'a always the same : passing almost every ISP except Hotmail/Gmail. I also always get this part in my email header regardless of which website i'm sending email from :

Received: from host.locker4adream.com ([])
by host.locker4adream.com with esmtpa (Exim 4.68)
So I think it's the host.locker4adream.com part that makes me rejected. Because it's almost the only line in the email header that is different when I am using Outlook/Thunderbird to send mail. This ip (]) is mine and I never spammed or anything.

So i asked my host ro add rDNS. And I added this line to my DNS zone on my mail domain:

lockeradream TXT "v=spf1 mx a ptr ip4: ip4:"
I am really out of solutions! Can anyone tell me if the SPF record stated above is ok?

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Csf Recommend Settings

Mar 8, 2008

I'm running a pretty large site that brings in about 80k unique each month, what would be a good setting to lower sync floods settings in csf configuration?

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DNS Settings In Cpanel

Apr 7, 2008

I have a dedicated server and have 5 IP addresses in all.

3 IP addresses i am using already.

I want to give 2 IP address to a site, i have created DNS for that site:


for both NS i have given 2 spare IPs.

Now i want to edit the DNS of that domain name, which section i edit of the DNS in WHM and in which field what i write?

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Whmcs Settings?

Jul 12, 2007

Is there a way to make it only paypal verified people can order?

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Dos_evasive Settings

Jan 19, 2007

I have over 200 bots or whatever they are are simply using over 200 differebt Ips to take down the site and they were sucessful to slow it down but now its working fine but with high loads I installed Dos_deflate and dos_evasive but can someone recmannd me the best dos_evasive settings to prevent these kinds of attacks

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Compilaiton Settings

Jan 20, 2007

I cannot compile software from source because:

/usr/bin/uname -p = unknown
/bin/uname -X = unknown

/bin/arch = i686
/usr/bin/arch -k = unknown
/usr/convex/getsysinfo = unknown
hostinfo = unknown
/bin/machine = unknown
/usr/bin/oslevel = unknown
/bin/universe = unknown

PATH: /usr/kerberos/sbin
PATH: /usr/kerberos/bin
PATH: /usr/local/sbin
PATH: /usr/local/bin
PATH: /sbin
PATH: /bin
PATH: /usr/sbin
PATH: /usr/bin
PATH: /usr/X11R6/bin
PATH: /root/bin

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Something Wrong With DNS Settings

Jun 4, 2007

I have bought a dedicated server with FDC servers and installed a script. Initially everything was working fine but now the site is not accessible. Everything is alright with the script installed but looks like there is some issue with the DNS settings. When I ping the IP address (it's dedicated ip address) it gives me an error. When I Ping the domain name, it just closes the window after few mins. Can someone experienced with WHM help me to fix the DNS settings? Of course, I am ready to pay for your help (though i might not have a very higher budget)

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Mod_evasive Settings

Mar 30, 2007

mod_evasive settings?

I cant find out the setting which would ban all bad IPs and will nto ban normal ones.

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VPS Account Or Settings

Sep 17, 2007

I'm having some issues with my vps hosting account. Awstats started showing ebay and yahoo as the most visited sites with that traffic originating from Hong Kong.

access_log has entries like this: - - [07/Sep/2007:01:14:31 -0600] CONNECT HTTP/1.1 200 13238 - - [17/Sep/2007:04:40:30 -0600] GET [url]HTTP/1.1 200 13216 Mozilla/4.0 (compatible; MSIE 5.00; Windows 98)

I contacted support and their response included:

- Most likely what is happening is that someone has mis-configured their computer so that it thinks your site is ebay.

- not malicious, site hits would be in millions if malicious. We can setup filtering if it continues.

Well it continues... and after some testing I find that I can telnet to port 80 to my servers IP with apache stopped and issue a - GET [url] HTTP/1.0 - and get yahoo's site.

This action doesn't show up in my access_log obviously because apache is stopped. So I'm now at the WTF stage. When I try the same thing with apache started and using domain name I get my sites main page but according to the access_log this person in HK is getting something else (different size).

I disabled and updated everything I could through their control panel and nmap shows ports (21,22,25,80,110,143,442,873) open, no UDP. I tried filtering but the HK host is dynamic.

- phpMyAdmin 2.9.2
- MySQL 4.1.9
- perl 5.8.7
- php 5.2.1
- roundcube 0.1.2

Can anyone offer some info as to what might be going on? I'm waiting to hear back from my host but it took them a while last time.

I came to WHT to get some help about what I asked above but kinda got lost reading the endless info on this site. Almost have me convinced that I "need" a dedicated server and I could spin off some hosting biz on the side... :/

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EAccelerator Settings

Nov 6, 2007

whether if its a good diea to enable these settings for eAccelerator?


There are scripts which are accessed once a day and i guess i shoudl set to prune those scripts which arent accessed for a few hours or so?

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Memory Settings

Sep 29, 2007

1. For a Virtuozzo based VPS of 256MB guaranteed RAM and 512MB burst RAM:

= 256MB
= 460MB / 512MB
= 256MB

Does the above indicate that the burst is actually up to 460MB or 512MB?

Does it also mean that 256MB is guaranteed even in out of memory situations?

2. For a Virtuozzo based VPS of 512MB guaranteed RAM and no burst RAM:

vmguarpages 0 67,584 2,147,483,647
= 264MB
privvmpages 82,870 131,072 139,264
= 512MB
oomguarpages 37,507 52,224 2,147,483,647
= 204MB

This seems to indicate there is 264MB guaranteed RAM and 512MB burst RAM. But the 204MB does not seem to tie in. Does this indicate that although 264MB is guaranteed, in an out of memory situation, only 204MB is guaranteed?

Does the second example seem right for a 512MB VPS? Or does it seem to be incorrectly setup?

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Plesk Mail Settings

Dec 12, 2006

For some reason some clients including my own test account have not been able to receive emails correctly. Basically if I send email to an external add such as Yahoo, Gmail, AOL etc, they receive them fine. However all incoming mail is blank for all clients? I mean blank as it there is no time or date stamp, no sender details unless you look in the header and the title just displays unknown?

Has anyone an idea why or how this could have happened?

I've even tried these with all spam filters off etc. I think the mail prog is qmail.

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Google APPS And MX Settings

Feb 7, 2008

I want to shift my mail to Google Apps (standard version). Currently my DNS is pointed towards 1and1 dedicated servers (having problems with 1and1 mail services). Want to keep hosting with them but change the Email to Google apps.

The Registrar of the domain is Netfirms, Inc.

My current Settings for nameservers in Nefirms CP are:

Google Instructed me to verify first by creating a CNAME, which I did in Netfirms control panel.

'googlexxxxx.mydomain.com' Pointing to 'google.com'


Google gave me the MX records to enter in the Netfirms panel.



It's been more than 24 hours, neither MX updated not that CNAME lookup 'googlexxxxx.mydomain.com is propogating.

What I am supposed to do here? I am waiting here for last 24 hours. I think that I have to set up these settings with my registrar (Netfirms) rather than it has to do something with 1and1?

Any suggestions?

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Default CHMOD Settings

Sep 10, 2009

Is there a way in ubuntu 8.10 to have default chmod? everytime someone uploads a file they have to chmod it so that it can be seen/used by the web.

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Server Settings For Blogs

Jun 7, 2008

I use a couple of different hosting companies.

Recently, I've begun setting up blogs.

I've been trying to set up blogs on Company "A" for the past month and have had nothing but problems.

While waiting to hear back - one more time - from tech support on Company "A"
I set up a blog on Company "B". Everything set up perfectly, smoothly and in about 1 hour I had the blog up and running.

I'm using 2.5.1 WPB and plugins that are NOT known to have "issues".

I've used the same themes and plugins on "A" and "B".

I changed permissions on a couple of the plugins (company A) and the plugins just disappeared.

I tried setting up widgets and none work.

if there are specific settings server side that make setting up blogs work/not work?

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CSF Settings Block My Server ..

Sep 6, 2008

I have a problem with my csf setting dunno why now when i start csf i block my server, i come from backup before with same config and working very well dunno why not working in this time.

# Copyright 2006, Way to the Web Limited
# URL: http://www.waytotheweb.com
# Email: sales@waytotheweb.com
# This configuration is for use with generic Linux servers, do not change the
# following setting:

# Testing flag - enables a CRON job that clears iptables incase of
# configuration problems when you start csf. This should be enabled until you
# are sure that the firewall works - i.e. incase you get locked out of your
# server! Then do remember to set it to 0 and restart csf when you're sure
# everything is OK. Stopping csf will remove the line from /etc/crontab

# The interval for the crontab in minutes. Since this uses the system clock the
# CRON job will run at the interval past the hour and not from when you issue
# the start command. Therefore an interval of 5 minutes means the firewall
# will be cleared in 0-5 minutes from the firewall start

# Enabling auto updates creates a cron job called /etc/cron.d/csf_update which
# runs once per day to see if there is an update to csf+lfd and upgrades if
# available and restarts csf and lfd. Updates do not overwrite configuration
# files or email templates. An email will be sent to the root account if an
# update is performed

# By default, csf will auto-configure iptables to filter all traffic except on
# the local (lo:) device. If you only want iptables rules applied to a specific
# NIC, then list it here (e.g. eth1, or eth+)
ETH_DEVICE = "venet0"

# If you don't want iptables rules applied to specific NICs, then list them in
# a comma separated list (e.g "eth1,eth2")

# Lists of ports in the following comma separated lists can be added using a
# colon (e.g. 30000:35000).

# Allow incoming TCP ports
TCP_IN = "21,22,25,53,80,110,143,443,993,995,3306,3784,7776:7779,8767,10000,35000:36000,14534,51234,25000:26000,9339,6969"

# Allow outgoing TCP ports
TCP_OUT = "20,21,22,25,53,80,110,113,443,953,995,9339,6969,5558,2222"

# Allow incoming UDP ports
UDP_IN = "20,21,53,953,3784,8767,1000"

# Allow outgoing UDP ports
# To allow outgoing traceroute add 33434:33523 to this list
UDP_OUT = "20,21,53,113,123,953,1000:3800,6100,6881"

# Allow incoming PING
ICMP_IN = "1"

# Set the per IP address incoming ICMP packet rate
# To disable rate limiting set to "0"
ICMP_IN_RATE = "1/s"

# Allow outgoing PING
ICMP_OUT = "1"

# Set the per IP address outgoing ICMP packet rate
# To disable rate limiting set to "0"

# If this is a MONOLITHIC kernel (i.e. it has no LKM support, e.g. a VPS) then
# set this to 1. Because of the nature of monolithic kernels, it's not easy to
# determine which modules have been built-in, so some functionality may not be
# available and this firewall script may not work.
# One example is if the ip_conntrack and ip_conntrack_ftp iptables kernel
# modules are not available. If this happens, FTP passive mode (PASV) won't
# work. In such circumstances you will have to open a hole in your firewall and
# configure the FTP daemon to use that same hole. For example, with pure-ftpd
# you could add the port range 30000:35000 to TCP_IN and add the following line
# to /etc/pure-ftpd.conf (without the leading #):
# PassivePortRange30000 35000
# Then restart pure-ftpd and csf and passive FTP should then work

# Drop target for iptables rules. This can be set to either DROP ot REJECT.
# REJECT will send back an error packet, DROP will not respond at all. REJECT
# is more polite, however it does provide extra information to a hacker and
# lets them know that a firewall is blocking their attempts. DROP hangs their
# connection, thereby frustrating attempts to port scan the server.

# Enable logging of dropped connections to blocked ports to syslog, usually
# /var/log/messages. This option needs to be enabled to use Port Scan Tracking

# Enable logging of dropped connections to blocked IP addresses in csf.deny or
# by lfd with temporary connection tracking blocks. Do not enable this option
# if you use Port Scan Tracking

# Only log reserved port dropped connections (0:1023). Useful since you're not
# usually bothered about ephemeral port drops

# Commonly blocked ports that you do not want logging as they tend to just fill
# up the log file. These ports are specifically blocked (applied to TCP and UDP
# protocols) for incoming connections
DROP_NOLOG = "67,68,111,113,135:139,445,513,520"

# Enable packet filtering for unwanted or illegal packets

# Log packets dropped by the packet filtering option PACKET_FILTER. This will
# show packet drops that iptables has deemed INVALID (i.e. there is no
# established TCP connection in the state table), or if the TCP flags in the
# packet are out of sequence or illegal in the protocol exchange.
# If you see packets being dropped that you would rather allow then disable the
# PACKET_FILTER option above by setting it to "0"

# Enable SYN flood protection. This option configures iptables to offer some
# protection from tcp SYN packet DOS attempts. You should set the RATE so that
# false-positives are kept to a minimum otherwise visitors may see connection
# issues (check /var/log/messages for *SYNFLOOD Blocked*). See the iptables
# man page for the correct --limit rate syntax

# Enable verbose output of iptables commands

# Log lfd messages to SYSLOG in addition to /var/log/lfd.log. You must have the
# perl module Sys::Syslog installed to use this feature
SYSLOG = "1"

# If you wish to allow access from dynamic DNS records (for example if your IP
# address changes whenever you connect to the internet but you have a dedicated
# dynamic DNS record from the likes of dyndns.org) then you can list the FQDN
# records in csf.dyndns and then set the following to the number of seconds to
# poll for a change in the IP address. If the IP address has changed iptables
# will be updated.
# A setting of 600 would check for IP updates every 10 minutes. Set the value
# to 0 to disable the feature
DYNDNS = "0"

# Limit the number of IP's kept in the /etc/csf/csf.deny file. This can be
# important as a large number of IP addresses create a large number of iptables
# rules (4 times the number of IP's) which can cause problems on some systems
# where either the the number of iptables entries has been limited (esp VPS's)
# or where resources are limited. This can result in slow network performance,
# or, in the case of iptables entry limits, can prevent your server from
# booting as not all the required iptables chain settings will be correctly
# configured. The value set here is the maximum number of IPs/CIDRs allowed
# if the limit is reached, the entries will be rotated so that the oldest
# entries (i.e. the ones at the top) will be removed and the latest is added.
# The limit is only checked when using csf -d (which is what lfd also uses)
# Set to 0 to disable limiting

# Limit the number of IP's kept in the temprary IP ban list. If the limit is
# reached the oldest IP's in the ban list will be removed and allowed
# regardless of the amount of time remaining for the block
# Set to 0 to disable limiting

# Temporary to Permanent IP blocking. The following enables this feature to
# permanently block IP addresses that have been temporarily blocked
# LF_PERMBLOCK_COUNT times in the last LF_PERMBLOCK_INTERVAL seconds. Set
# LF_PERMBLOCK to "1" to enable this feature
# Care needs to be taken when setting LF_PERMBLOCK_INTERVAL as it needs to be
# at least LF_PERMBLOCK_COUNT multiplied by the longest temporary time setting
# (TTL) for blocked IPs, to be effective
# Set LF_PERMBLOCK to "0" to disable this feature

# Permanently block IPs by network class. The following enables this feature
# to permanently block classes of IP address where individual IP addresses
# within the same class LF_NETBLOCK_CLASS have already been blocked
# LF_NETBLOCK_COUNT times in the last LF_NETBLOCK_INTERVAL seconds. Set
# LF_NETBLOCK to "1" to enable this feature
# This can be an affective way of blocking DDOS attacks launched from within
# the same networ class
# Valid settings for LF_NETBLOCK_CLASS are "A", "B" and "C", care and
# consideration is required when blocking network classes A or B
# Set LF_NETBLOCK to "0" to disable this feature

# The follow Global options allow you to specify a URL where csf can grab a
# centralised copy of an IP allow or deny block list of your own. You need to
# specify the full URL in the following options, i.e.:
# http://www.somelocation.com/allow.txt
# The actual retrieval of these IP's is controlled by lfd, so you need to set
# LF_GLOBAL to the interval (in seconds) when you want lfd to retrieve. lfd
# will perform the retrieval when it runs and then again at the specified
# interval. A sensible interval would probably be every 3600 seconds (1 hour)
# You do not have to specify both an allow and a deny file
# You can also configure a global ignore file for IP's that lfd should ignore

# Enable login failure detection daemon (lfd). If set to 0 none of the other LF
# settings have any effect as the daemon won't start.
# When the trigger level of failures is reached lfd will use csf to add the IP
# to the /etc/csf/csf.deny file and block it

# The following[*] triggers are application specific. If you set LF_TRIGGER to
# "0" the value of each trigger is the number of failures against that
# application that will trigger lfd to block the IP address
# If you set LF_TRIGGER to a value greater than "0" then the following[*]
# application triggers are simply on or off ("0" or "1") and the value of
# LF_TRIGGER is the total cumulative number of failures that will trigger lfd
# to block the IP address
# Setting the application trigger to "0" disables it

# If LF_TRIGGER is > 1 then the following can be set to "1" to permanently
# block the IP address, or if set to a value greater than "1" then the IP
# address will be blocked temporarily for the value in seconds. For example:
# LF_TRIGGER = "1" => the IP is blocked permanently
# LF_TRIGGER = "3600" => the IP is blocked temporarily for 1 hour
# If LF_TRIGGER is 0, then the application LF_[application]_PERM value works in
# the same way as above

# To only block access to the failed application instead of a complete block
# for an ip address, you can set the following to "1", but LF_TRIGGER must be
# set to "0" with specific application[*] trigger levels also set

#[*]Enable login failure detection of sshd connections
LF_SSHD = "5"

#[*]Enable login failure detection of pure-ftpd connections
LF_FTPD = "10"

#[*]Enable login failure detection of SMTP AUTH connections

#[*]Enable login failure detection of courier pop3 connections. This will not
# trap the older cppop daemon
LF_POP3D = "10"

#[*]Enable login failure detection of courier imap connections. This will not
# trap the older cpimap (uwimap) daemon
LF_IMAPD = "10"

#[*]Enable login failure detection of Apache .htpasswd connections
# Due to the often high logging rate in the Apache error log, you might want to
# enable this option only if you know you are suffering from attacks against
# password protected directories

#[*]Enable failure detection of Apache mod_security connections
# Due to the often high logging rate in the Apache error log, you might want to
# enable this option only if you know you are suffering from attacks against
# web scripts

#[*]Enable detection of suhosin triggers and blocking of attackers
# Example: LF_SUHOSIN = "5"

# Check that csf appears to have been stopped. This checks the status of the
# iptables INPUT chain. If it's not set to DROP, LF will run csf. This will not
# happen if TESTING is enabled above. The check is done every 300 seconds
LF_CSF = "1"

# Send an email alert if anyone logs in successfully using SSH

# Send an email alert if anyone uses su to access another account. This will
# send an email alert whether the attempt to use su was successful or not

# Enable Directory Watching. This enables lfd to check /tmp and /dev/shm
# directories for suspicious files, i.e. script exploits. If a suspicious
# file is found an email alert is sent. Only one alert per file is sent until
# lfd is restarted, so if you remove a suspicious file, remember to restart lfd
# To enable this feature set the following to the checking interval in seconds.
# Set to disable set to "0"

# To remove any suspicious files found during directory watching, enable the
# following. These files will be appended to a tarball in
# /etc/csf/suspicious.tar

# This option allows you to have lfd watch a particular file or directory for
# changes and should they change and email alert using watchalert.txt is sent
# To enable this feature set the following to the checking interval in seconds
# (a value of 60 would seem sensible) and add your entries to csf.dirwatch
# Set to disable set to "0"

# This is the interval that is used to flush reports of usernames, files and
# pids so that persistent problems continue to be reported, in seconds.
# A value of 3600 seems sensible
LF_FLUSH = "3600"

# System Integrity Checking. This enables lfd to compare md5sums of the
# servers OS binary application files from the time when lfd starts. If the
# md5sum of a monitored file changes an alert is sent. This option is intended
# as an IDS (Intrusion Detection System) and is the last line of detection for
# a possible root compromise.
# There will be constant false-positives as the servers OS is updated or
# monitored application binaries are updated. However, unexpected changes
# should be carefully inspected.
# Modified files will only be reported via email once.
# To enable this feature set the following to the checking interval in seconds
# (a value of 3600 would seem sensible). This option may pur an increased I/O
# load onto the server as it checks system binaries.
# To disable set to "0"

# System Exploit Checking. This enables lfd to check for the Random JS Toolkit
# and may check for others in the future:
# http://www.cpanel.net/security/notes/random_js_toolkit.html
# It compares md5sums of the binaries listed in the exploit above for changes
# and also attempts to create and remove a number directory
# Modified files will only be reported via email once, though will be reset
# after an hour
# To enable this feature set the following to the checking interval in seconds
# (a value of 300 would seem sensible).
# To disable set to "0"
LF_EXPLOIT = "300"

# This comma separated list allows you to (de)select which tests LF_EXPLOIT
# performs
# For the SUPERUSER check, you can list usernames in csf.suignore to have them
# ignored for that test
# Valid tests are:

# Set the time interval to track login failures within (seconds), i.e.
# LF_TRIGGER failures within the last LF_INTERVAL seconds

# Set the log file parsing interval (seconds). This is how long the daemon
# sleeps before processing the log file entries since the last scan finished
LF_PARSE = "5"

# Send an email alert if an IP address is blocked

# Send an email alert if an account exceeds LT_POP3D/LT_IMAPD logins per hour
# per IP

# Block POP3 logins if greater than LT_POP3D times per hour per account per IP
# address (0=disabled)
LT_POP3D = "15"

# Block IMAP logins if greater than LT_IMAPD times per hour per account per IP
# address (0=disabled) - not recommended for IMAP logins due to the ethos
# within which IMAP works. If you want to use this, setting it quite high is
# probably a good idea
LT_IMAPD = "0"

# Enable IP range blocking using the DShield Block List at
# http://www.dshield.org/block_list_info.php
# To enable this feature, set the following to the interval in seconds that you
# want the block list updated. The list is reasonably static during the length
# of a day, so it would be appropriate to only update once every 24 hours, so
# a value of "86400" is recommended
LF_DSHIELD = "86400"

# The DShield block list URL. If you change this to something else be sure it
# is in the same format as the block list
LF_DSHIELD_URL = "http://feeds.dshield.org/block.txt"

# Enable IP range blocking using the Spamhaus DROP List at
# http://www.spamhaus.org/drop/index.lasso
# To enable this feature, set the following to the interval in seconds that you
# want the block list updated. The list is reasonably static during the length
# of a day, so it would be appropriate to only update once every 24 hours, so
# a value of "86400" is recommended
LF_SPAMHAUS = "86400"

# The Spamhaus DROP List URL. If you change this to something else be sure it
# is in the same format as the drop list
LF_SPAMHAUS_URL = "http://www.spamhaus.org/drop/drop.lasso"

# Enable IP range blocking using the BOGON List at
# http://www.cymru.com/Bogons/
# To enable this feature, set the following to the interval in seconds that you
# want the block list updated. The list is reasonably static during the length
# of a day, so it would be appropriate to only update once every 24 hours, so
# a value of "86400" is recommended
# Do NOT use this option if your server uses IP's on the bogon list (e.g. this
# is often the case with servers behind a NAT firewall using ip routing)
LF_BOGON = "0"

# The BOGON List URL. If you change this to something else be sure it
# is in the same format as the drop list
LF_BOGON_URL = "http://www.cymru.com/Documents/bogon-bn-agg.txt"

# Connection Tracking. This option enables tracking of all connections from IP
# addresses to the server. If the total number of connections is greater than
# this value then the offending IP address is blocked. This can be used to help
# prevent some types of DOS attack.
# Care should be taken with this option. It's entirely possible that you will
# see false-positives. Some protocols can be connection hungry, e.g. FTP, IMAPD
# and HTTP so it could be quite easy to trigger, especially with a lot of
# closed connections in TIME_WAIT. However, for a server that is prone to DOS
# attacks this may be very useful. A reasonable setting for this option might
# be arround 200.
# To disable this feature, set this to 0
CT_LIMIT = "200"

# Connection Tracking interval. Set this to the the number of seconds between
# connection tracking scans. Don't set this too low or you will affect server
# performance as lfd runs netstat each time to determine the connections

# Send an email alert if an IP address is blocked due to connection tracking

# If you want to make IP blocks permanent then set this to 1, otherwise blocks
# will be temporary and will be cleared periodically or whenever the firewall
# is restarted

# If you opt for temporary IP blocks for CT, then the following is the interval
# in seconds that the IP will remained blocked for (e.g. 1800 = 30 mins)
CT_BLOCK_TIME = "3200"

# If you don't want to count the TIME_WAIT state against the connection count
# then set the following to "1"

# If you only want to ount specific states (e.g. SYN_RECV) then add the states
# to the following as a comma separated list. E.g. "SYN_RECV,TIME_WAIT"
# Leave this option empty to count all states against CT_LIMIT

# Process Tracking. This option enables tracking of user and nobody processes
# and examines them for suspicious executables or open network ports. Its
# purpose is to identify potential exploit processes that are running on the
# server, even if they are obfuscated to appear as system services. If a
# suspicious process is found an alert email is sent with relevant information.
# It is then the responsibility of the recipient to investigate the process
# further as the script takes no further action. Processes (PIDs) are only
# reported once unless lfd is restarted.
# The following is the number of seconds a process has to be active before it
# is inspected. If you set this time too low, then you will likely trigger
# false-positives with CGI or PHP scripts.
# Set the value to 0 to disable this feature
PT_LIMIT = "60"

# How frequently processes are checked in seconds

# If you want process tracking to highlight php or perl scripts that are run
# through apache for greater than PT_LIMIT seconds then disable the following,
# i.e. set it to 0
# While enabling this setting will reduce false-positives, having it set to 0
# does provide better checking for exploits running on the server

# User Process Tracking. This option enables the tracking of the number of
# process any given linux account is running at one time. If the number of
# processes exceeds the value of the following setting an email alert is sent
# with details of those processes. A user is only reported once, so lfd must be
# restarted to reinstate checking of all users. If you specify a user in
# csf.pignore it will be ignored
# Set to 0 to disable this feature

# This User Process Tracking option sends an alert if any linux user process
# exceeds the memory usage set (MB). To ignore specific processes or users use
# csf.pignore
# Set PT_USERKILL to have lfd kill off the process
# Set to 0 to disable this feature
PT_USERMEM = "100"

# This User Process Tracking option sends an alert if any linux user process
# exceeds the time usage set (seconds). To ignore specific processes or users
# use csf.pignore
# Set PT_USERKILL to have lfd kill off the process
# Set to 0 to disable this feature
PT_USERTIME = "3200"

# If this option is set then processes detected by PT_USERMEM or PT_USERTIME
# or PT_USERPROC are killed

# Check the PT_LOAD_AVG minute Load Average (can be set to 1 5 or 15 and
# defaults to 5 if set otherwise) on the server every PT_LOAD seconds. If the
# load average is greater than or equal to PT_LOAD_LEVEL then an email alert is
# sent. lfd then does not report subsequent high load until PT_LOAD_SKIP
# seconds has passed to prevent email floods.
# Set PT_LOAD to "0" to disable this feature
PT_LOAD = "30"
PT_LOAD_SKIP = "3600"

# If a PT_LOAD event is triggered, then if the following contains the path to
# a script, it will be run in a child process. For example, the script could
# contain commands to terminate and restart httpd, php, exim, etc incase of
# looping processes

# Port Scan Tracking. This feature tracks port blocks logged by iptables to
# syslog. If an IP address generates a port block that is logged more than
# PS_LIMIT within PS_INTERVAL seconds, the IP address will be blocked.
# This feature could, for example, be useful for blocking hackers attempting
# to access the standard SSH port if you have moved it to a port other than 22
# and have removed 22 from the TCP_IN list so that connection attempts to the
# old port are being logged
# This feature blocks all iptables blocks from the iptables logs, including
# repeated attempts to one port or SYN flood blocks, etc
# Note: This feature will only track iptables blocks from the log file set in
# IPTABLES_LOG below and if you have DROP_LOGGING enabled. However, it will
# cause redundant blocking with DROP_IP_LOGGING enabled
# Warning: It's possible that an elaborate DDOS (i.e. from multiple IP's)
# could very quickly fill the iptables rule chains and cause a DOS in itself.
# The DENY_IP_LIMIT should help to mitigate such problems with permanent blocks
# and the DENY_TEMP_IP_LIMIT with temporary blocks
# Set PS_INTERVAL to "0" to disable this feature. A value of between 60 and 300
# would be sensible to enable this feature
PS_LIMIT = "10"

# You can specify the ports and/or port ranges that should be tracked by the
# Port Scan Tracking feature. The following setting is a comma separated list
# of those ports and uses the same format as TCP_IN. The default setting of
# 0:65535 covers all ports
PS_PORTS = "0:65535"

# You can select whether IP blocks for Port Scan Tracking should be temporary
# or permanent. Set PS_PERMANENT to "0" for temporary and "1" for permanent
# blocking. If set to "0" PS_BLOCK_TIME is the amount of time in seconds to
# temporarily block the IP address for
PS_BLOCK_TIME = "3600"

# Set the following to "1" to enable Port Scan Tracking email alerts, set to
# "0" to disable them

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I just installed a new version of CSF again on my server.

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I notice new version 3.33 has new function such as synflood and so on, can someone tell me if I need to change any settings inside my csf.conf other than disabling the testing = 0 on a fresh new cpanel server?

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safe_mode = Off
allow_url_fopen = On
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Apr 9, 2007

I have purchased a proxy website using phproxy script hosted at dedicated server. Its now about 4 months and everything is fine but i want to move my site to another dedicated server provider because current one has some issues.

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I am very much pleased with current server settings but i need to move. So i want to make sure that i can optimize new server and install same scripts to keep going with current performance.

I only know about http.conf settings and i have noted it ... plz help me about copying every other settings which that guy had done to optimize the server and how can i know which and where those scripts are installed which has made server quite efficient?

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Oct 9, 2007

I updated my account from shared to my first VPS account with GoDaddy and they assigned me a I.P.

Now,I choose the options to use GoDaddy NameServers,and i changed the entry there so that my domain name points to my I.P,like this:

Host: @
Point to: <I.P assigned to my domain>

Now,if i type my domain name in the browser,it shows my website but if i click on any link, my I.P address is being shown on the browser instead of my I.P.This is happening for all the links.

what nameservers settings i need to so that this does not happens.

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Where is the config file?

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Apache 2.2

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I am running a web server (Apache 2.2) on a (production)windows 2008 server. I am encountering a little trouble. I have the domain wheatondev-uk.com pointing to this (production) server. This works fine. I have another domain hosted on another(developement) server. This is domain is wheaton-uk.com I want to have the domain wheaton-uk.com point to the production server. However when i change the DNS settings at network solutions by that I mean i change the settings of wheaton-uk.com to point to the IP of the production server...it times out when trying to go to wheaton-uk.com. If I switch them back to the original DNS settings, all the domains load up fine. I feel like this is an apache thing and I need to change something in the conf files.

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I have the following config:

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PHP 5.2.9 (suphp / suhosin disabled)
Server: Dual Xeon, 4GB Memory

I'd like input on the most optimal settings overall



; Memcache Section
extension = memcache.so
memcache.allow_failover = 0


; Resource Limits ;

max_execution_time = 300
max_input_time = 600
memory_limit = 256M



RLimitMEM 473331029
RLimitCPU 240
ErrorLog logs/error_log
DefaultType text/plain
AddType text/html .shtml

ServerLimit 1000
KeepAlive On
MaxKeepAliveRequests 64
KeepAliveTimeout 1
MinSpareServers 5
MaxSpareServers 15
StartServers 30
MaxClients 850
MaxRequestsPerChild 64
HostnameLookups Off
UseCanonicalName Off



query_cache_size=128M ## 32MB for every 1GB of RAM
key_buffer=512M ## 128MB for every 1GB of RAM
sort_buffer_size=4M ## 1MB for every 1GB of RAM
read_buffer_size=4M ## 1MB for every 1GB of RAM
read_rnd_buffer_size=4M ## 1MB for every 1GB of RAM
thread_concurrency=8 ## Number of CPUs x 2

old-passwords = 1


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