Block Spam

May 12, 2009

I'm having difficulties with a whm running on centos dedicated server. The problem is that we receive too much of spam and junk emails. by too much I mean 2000 bulks per week. It's killing us.

how I can stop it.

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Block Spam

Jun 16, 2008

I have spamassassin configured its working 90% but still I am receiving mails from my ID only. Like I have info@domain.com so I am receiving mail from info@domain.com to info@domain.com.

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Apache :: Block Spam Visitor

Jun 28, 2015

I have a regular visitor from 1999521.videos-for-your-business.com/ and I am aware this is spam from semalt.com, the trouble is I have tried blocking this but it keeps coming back the number 1999521 changes frequently

I have the following in my htaccess file

## STOP REFERRER SPAM
RewriteCond %{HTTP_REFERER} semalt.com [NC,OR]
RewriteCond %{HTTP_REFERER} best-seo-offer.com [NC,OR]
RewriteCond %{HTTP_REFERER} videos-for-your-business.com [NC,OR]
RewriteCond %{HTTP_REFERER} semaltmedia.com [NC,OR]
RewriteCond %{HTTP_REFERER} best-seo-solution.com
RewriteRule .* - [F]

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Block My Own Email Address To Receive Spam

Jun 11, 2008

I have configured qmail+spamassassin. It working find but still I have 2 problem. I am receiving spam mails from my own account to my own account e.g. from=info@domain.com to info@domain.com. How can I block this spam?

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Install A Software To BLOCK The Spam Emails?

Mar 27, 2008

I have a dedicated server with WHM Control panel

But know, i have a serious problem about Spam emails,

How can i install a sofeware for BLOCK the spam emails?

Is there any program in WHM Control panel?

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How To Limit/block Outgoing Spam - CPanel Servers + EXIM

Mar 12, 2008

My server is sending all emails via exim smarthost to other specialised exim server (both cPanel). How may I limit customers from sending out SPAM ? Mean to scan outgoing emails and delete/store in some folder which ones identified as SPAM. Preferrably the scan part to be on exim email proxy cause it is much idle.

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Plesk 11.x / Windows :: Move Spam To Spam Folder Not Available?

Oct 17, 2013

Microsoft Windows Server 2008 R2 Service Pack 1
Panel version 11.0.9 Update #59, last updated at Oct 3, 2013 02:06 AM
MailEnable version 5

I see in the plesk documentation that the screen to enable SPAM filtering for an individual there is an option to "Move spam to the Spam folder". I don't see that option so I am wondering if it is only available on some versions of Plesk, or in combination with certain mail servers. How to make that option available?

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Way To Block IP

Jul 8, 2009

I am curious, what is the best way to ban certain IP from accessing server? I have software firewall (APF) and there is, of course, /etc/hosts.deny.

Which is the most efficient? I've read that software firewall becomes unstable after so many entries. Does the same apply to /etc/hosts.deny file?

Or is there a better way altogether?

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How To Block IP

Jun 8, 2009

some Chinese forums hotlinking images from my site and I even delete those images they keep sending me huge amount of http requests to my hosting server and eating 800mb of memory and upto 1GB cause server crash

I tried to block incoming referrer traffic from those sites using htaccess but it didn't work , I still see their http request on my server logs and memory keep goes high , am not sure my code is the right

how can I block these http request from these domains , what is the right htaccess code , I use DirectAdmin panel by the way

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Block IP, How To

May 16, 2007

Can any one let me know how to block a range IP on SSH?

Eg: i'd like to block all IP: 67.63.123.xxx

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How To Block A Block Of IP'S

Jan 9, 2007

I'm currently experiencing a lot of IP's starting with 200 and 201 (from Brazil) some IP’s have over 200 connections. I have APF installed and want to know how to block a block on ip's if this is possible.
IPS:
200.11.*******
201.*******

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How To Block All Other IP And Allow Certain IP Using APF

Apr 27, 2007

I have DDos Attack right now so I want to block all the IP from all over the world and just allow certain IP range.

How to do it using APF or any other way.

For example I want to block everything but Germany IP

Code:
53.0.0.0/8
62.4.64.0/19
62.8.32.0/19
62.8.128.0/17
62.24.0.0/19
62.26.0.0/15
62.40.0.0/19
62.44.32.0/19
62.48.64.0/19
62.50.32.0/19
62.50.96.0/19
62.50.192.0/18
62.52.0.0/14
62.61.32.0/19
62.68.0.0/19
62.72.0.0/18
62.72.64.0/19
62.75.128.0/17
62.78.64.0/20
62.80.0.0/18
62.80.96.0/19
62.89.160.0/19
62.91.0.0/16
62.93.192.0/18
62.95.128.0/18
62.104.0.0/16
62.109.64.0/18
62.109.128.0/19
62.111.0.0/17
62.112.32.0/19
62.112.64.0/19
62.112.128.0/19
62.116.128.0/18
62.117.0.0/19
62.128.0.0/19
62.128.160.0/19
62.133.0.0/19
62.138.0.0/16
62.141.32.0/19
62.141.160.0/19
62.145.0.0/19
62.143.0.0/16
62.144.0.0/16
62.146.0.0/16
62.152.0.0/19
62.152.160.0/19
62.153.0.0/16
62.154.0.0/15
62.156.0.0/14
62.165.0.0/19
62.168.192.0/19
62.169.0.0/19
62.176.128.0/19

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To Block IP

Apr 15, 2007

how can i block to access to some IP?

for examaple scripts in my hosts can not access to some IPs i want

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How To Tell Fortigate Not To Block My VPS IP

May 5, 2009

Fortigate appliances blocking an IP that is not in RBLs I have a problem with the IP 66.187.108.157 of my VPS it seems to be blocked by Fortigate appliances, as you can see in this error message:

SMTP error from remote mail server after RCPT TO:[url] host mail.am.com.pe [200.62.221.107]: 554 5.7.1 This message has been

blocked because it is from a FortiGuard - AntiSpam black IP address.(connection black ip 66.187.108.157)

However I have searched in this URL [url]and it is clean.

Any ideas on how to have/force Fortigate databases to become updated.

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How To Block The World

Jul 4, 2009

IM about tired of spam and hackers putting phishing items on my server.

My question is.

How can I block the whole world expect for US, CA and UK?

I've added several countrys to csf's csf.deny list but half of them keep disappearing.

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Block A Specific ISP

Jun 12, 2008

Is there any way to block a particular ISP? Have a visitor that changes IP hourly, but the IP always resolves back to a hostname like dsl.yuns.sksk.uk .

I have CSF installed. Any way to block all visitors from dsl.yuns.sksk.uk?

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Suhosin Block

Jun 17, 2008

in one of my servers i have this line in my ConfigServer Security & Firewall:

190.28.118.155 # lfd: 10 (suhosin) login failures from 190.28.118.155 - Mon Jun 16 23:27:50 2008

is this ok? i mean... its an attack of some sort? i know suhosin is meant to increase php security, so its blocking an attack right?

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Apf To Block An IP Address

Apr 29, 2008

I have blocked this IP 125.115.144.28

/etc/apf/apf -d 125.115.144.28

But

netstat -anp|grep tcp|awk '{print $5}'| cut -d : -f1 | sort | uniq -c | sort -n

It still showing

202 125.115.144.28

Why?

Is it supposed to blocked right away, or need some time to get blocked.

When I checked /etc/apf/deny_hosts.rules

The IP is in the file.

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Block An IP Range ...

Apr 6, 2008

I set up a forum for a small group of users, so I don't really wish to see spiders or bots on it, so I've put a robots.txt file there to prevent all of them from accessing the forum pages.

I know not all bots follow the robots.txt rule, and these days a really annoying bot called MUNAXNET or Munax AB with IP range 82.99.30.0 - 82.99.30.127 is causing the forum to have extra and unexpected loads.

I've tried to block this IP range with .htaccess and uploaded it to the root of the site a few days ago, here is the content:

<Limit GET HEAD POST>
order allow,deny
deny from 82.99.30.0-82.99.30.127
allow from all
</LIMIT>
However strangely it seems that all of these are not working for this bot, today I saw my forum had 80 users online and that army still keeps coming and browsing all pages of my forums...

I tested the .htaccess with blocking myself, and it actually worked for me, dunno why it's not working for that bot..

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Should I Block Yandex

Mar 13, 2008

I was just researching my log analyzers to see whats happening... I noticed something new in the logs, a large number of unnamed robots or spiders... so I found the robot... it was this:

23310 7.99% 23303 9.48% 1159765 18.56% 22 0.12% 77.88.26.26

After some reading, sites say the ip belongs to spider26.yandex.ru

For simply security reasons, would it be in best interest to block the entire subnet? It seems that the same IP ending in .25 belongs to spider25.yandex.ru

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Anyone Using Snort - Does It Really Block Anything

Apr 25, 2008

Is anyone using snort?

Does it really block any web based attacks?

I know I can do port scans, and it can alert you to a whole bunch of false positvies, but is it blocking/detecting any serious attacks on your web server?

If so, which rules are the one is alerting on?

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Block A Bot By Netmask

Jan 8, 2008

I have a Juniper firewall. I'm seeing a ton of traffic from the Twiceler bot in the range of 100,000 hits a day. Luckily they've more recently put up a list of IP addresses their bots use at:

[url]

So, I'm blocking all of these now. However I think it's a simple Netmask issue I'm having. I'm blocking all ports from

208.36.144.0/24
38.99.13.0/24
38.99.44.0/24
64.1.215.0/24

However, I am still seeing the bot in server log files. Could it be that I should not be specifying .0 at the end, but instead .1? Like this in the policy?

64.1.215.1/24

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Block Proxy

Feb 21, 2007

How do I block known proxy sites such as anonymouse.org or such via CSF (firewall)? I'll need to block by domains, wildcard domains (such as *proxy.tld) and IP's.

What is the proper way and is there a nice list of such proxies? I'm trying to prevent some degenerate troll from accessing my forum.

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How To Block Certain Referrals

Apr 22, 2008

Since yesterday I have noticed some odd activity at one of my websites - www.cartuningcentral.com

The problem is that I am getting huge traffic from what I would say are traffic exchange programs, which I didn't buy, and don't want to have at all.

Examples of the referrals I am getting are:

[url]
[url]

Full details can be found here:

[url]

Now, I have tried to block all those using .htaccess, but I am by no means an expert on that.

Here's what I have done:

RewriteEngine on
# Options +FollowSymlinks
RewriteCond %{HTTP_REFERER} ^(http://)?67.192.42.*$ [NC,OR]
RewriteCond %{HTTP_REFERER} (tserve) [NC,OR]
RewriteCond %{HTTP_REFERER} (trafficserver) [NC,OR]
RewriteCond %{HTTP_REFERER} (67.192.42.2) [NC,OR]
RewriteCond %{HTTP_REFERER} (67.192.42.5) [NC]
RewriteRule .* - [F]
But it's not working at all.

how to block those referrals please?

It can be either using .htaccess, php, whatever.

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BFD Events Before Block

Feb 12, 2007

I Have APF and BFD Installed but it always seems to show 80 odd events before blocking the IP. Is there a way of setting it to say 10 wrong attempts?

I Tried this, but it hasn't done a thing. below happened after the change.

Quote:

REQ="/usr/sbin/sshd"
if [ -f "$REQ" ]; then
LP="/var/log/secure"
TLOG_TF="sshd"
TRIG="10"

Quote:

Originally Posted by From BFD E-mail

The remote system 205.234.140.219 was found to have exceeded acceptable login failures on URL; there was 83 events to the service sshd. As such the attacking host has been banned from further accessing this system. For the integrity of your host you should investigate this event as soon as possible.

Executed ban command:
/etc/apf/apf -d 205.234.140.219 {bfd.sshd}

The following are event logs from 205.234.140.219 on service sshd (all time stamps are GMT -0600):

Feb 12 09:08:32 serverthree sshd[4552]: Failed password for invalid user test from ::ffff:205.234.140.219 port 35549 ssh2 Feb 12 09:08:32 serverthree sshd[4552]: Received disconnect from ::ffff:205.234.140.219: 11: Bye Bye Feb 12 03:08:33 serverthree sshd[4555]: Invalid user test from ::ffff:205.234.140.219 Feb 12 03:08:35 serverthree sshd[4553]: Failed password for invalid user test from ::ffff:205.234.140.219 port 35745 ssh2 Feb 12 09:08:35 serverthree sshd[4554]: Failed password for invalid user test from ::ffff:205.234.140.219 port 35745 ssh2 Feb 12 09:08:35 serverthree sshd[4554]: Received disconnect from ::ffff:205.234.140.219: 11: Bye Bye Feb 12 03:08:35 serverthree sshd[4557]: Invalid user test from ::ffff:205.234.140.219 Feb 12 03:08:35 serverthree sshd[4555]: Failed password for invalid user test from ::ffff:205.234.140.219 port 35794 ssh2 Feb 12 09:08:35 serverthree sshd[4556]: Failed password for invalid user test from ::ffff:205.234.140.219 port 35794 ssh2 Feb 12 09:08:35 serverthree sshd[4556]: Received disconnect from ::ffff:205.234.140.219: 11: Bye Bye Feb 12 03:08:36 serverthree sshd[4559]: Invalid user test from ::ffff:205.234.140.219 Feb 12 03:08:37 serverthree sshd[4557]: Failed password for invalid user test from ::ffff:205.234.140.219 port 35978 ssh2 Feb 12 09:08:37 serverthree sshd[4558]: Failed password for invalid user test from ::ffff:205.234.140.219 port 35978 ssh2 Feb 12 09:08:37 serverthree sshd[4558]: Received disconnect from ::ffff:205.234.140.219: 11: Bye Bye Feb 12 03:08:38 serverthree sshd[4561]: Invalid user test from ::ffff:205.234.140.219 Feb 12 03:08:38 serverthree sshd[4559]: Failed password for invalid user test from ::ffff:205.234.140.219 port 36033 ssh2 Feb 12 09:08:38 serverthree sshd[4560]:

[snipped irrelevant and lengthy log file - gbjbaanb]

Failed password for invalid user testing from ::ffff:205.234.140.219 port 42990 ssh2 Feb 12 09:10:00 serverthree sshd[4679]: Received disconnect from ::ffff:205.234.140.219: 11: Bye Bye Feb 12 03:10:01 serverthree sshd[4682]: Invalid user testing from ::ffff:205.234.140.219 Feb 12 03:10:02 serverthree sshd[4680]: Failed password for invalid user testing from ::ffff:205.234.140.219 port 43145 ssh2 Feb 12 09:10:02 serverthree sshd[4681]: Failed password for invalid user testing from ::ffff:205.234.140.219 port 43145 ssh2 Feb 12 09:10:02 serverthree sshd[4681]: Received disconnect from ::ffff:205.234.140.219: 11: Bye Bye
----

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Block TOR Network

Apr 17, 2007

I am seeing quite a few hacking attempts coming from the TOR network. I'd like to block the TOR network on the firewall level. Anyone know how to block them?

There is a python script, but I am not familiar with Python at all and do not know how run this script. It is supposed to extract all current IP Addresses and provide a list.

I think they have about 450 IP addresses and I would like to block them.

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