Is there a program to find out the MAC address of a particular IP address?
Have been having some problems lately with some of my IPs and clients using unauthorised IP addresses which the ISP is hopping on me about it.
I have tried things like
In LINUX
nmblookup
nslookup
In DOS
nbstat
but can't get the MAC of the particular IP I am looking for...
My customer has an external facing Apache server that is acting as a reverse proxy to two internal applications. They have:
- external addresses for each app which resolve to different ip addresses, so app1.their_domain.com and app2.their_domain.com resolve to 77.3.170.10 and 77.3.170.11 respectively.
- the Apache server has two network interfaces with ip addresses 192.168.10.10 and 192.168.10.11
- the external ip addresses resolve to the above internal addresses
- the firewall between the Apache server and the internal app servers is configured to allow traffic from 192.168.10.10 to reach app_server1, and traffic from 192.168.10.11 to reach app_server2, both using port 7777.
I have configured a virtual host in httpd.conf for each ip, i.e.
Code:
<VirtualHost 192.168.10.10:80>
...
ProxyPass /app http://app_server1:7777/app
ProxyPassReverse /app http://app_server1:7777/app
RewriteRule ^/$ /app/app1 [R,L]
...
<VirtualHost>
and
Code:
<VirtualHost 192.168.10.11:80>
...
ProxyPass /app http://app_server2:7777/app
ProxyPassReverse /app http://app_server2:7777/app
RewriteRule ^/$ /app/app2 [R,L]
...
<VirtualHost>
This works fine in that the external address are being routed to the correct application, however the firewall is blocking requests to the second app as it appears the requests are coming from the Apache servers 'primary' ip address 192.168.10.10 instead of 192.168.10.11.
Is it possible to send requests using the ip address from the relevant VirtualHost?
Windows server 2008
Apache 2.2
ip addr add 69.39.**.**/29 dev vmnet0
iam getting cant find the device vmnet0
how to add it
Has anyone here ran the CSF firewall on a bridged networking device?
View 1 Replies View RelatedI have linux server and like to put somekind of DDOS prevention/protection... what kind of device do I need to purcahse to do this?
can anyone advise on this?
I have SSL enabled site on IIS.I want to access it from my PocketPC(Win mobile).But when I try access it, I have been prompted to install a certificate.
Unlike when I try to any HTTPS site (Banking sites) I have never been prompted to install any certificate.
Why am I being prompted with security message with "Yes,No,View certificate" options on it every time I try to access my own server(desktop) via my WIN mobile using active sync.
Unlike When I try to access banking site(https) I was never ever prompted a mesage like above.
How to have same functionality for my application also?
I have a Dell LTO-4 tape device, its not an autoloader, just a single drive.
When backing up using NTBackup, the backup to the first tape is sucessful, however, the backup wont fit on one tape, so it prompts me to tell me the media is full.
I insert new media, but NTBackup doesn't notice its there, so i go to Removable storage, click libaries, right click the tape drive, and click inventory.
This makes NTBackup detect the tape, and asks me if i want to use it. I click yes, but then i get an error message come up saying it was unable to mount the media, invalid command, and the following gets logged to the report:
Code:
Cannot locate the specified media or backup device. This backup operation will terminate.
----------------------
Cannot locate the specified media or backup device. This backup operation will terminate.
----------------------
Cannot locate the specified media or backup device. This backup operation will terminate.
----------------------
I have read many microsoft articles that explain tape drives having problem with automated backups because the user inserts a new tape, but ntbackup isn't aware of it. But that seems to be related only to scheduled unattended backups.
In this case its when the first tape is full and it prompts me for the second tape.
I just found the following KVM over IP device with 16 ports:
[url]
You can get it for 747 € ( plus VAT ) and it comes with 2 CPU cables. Each additional cable costs only 5.80 €. For 828 € you can manage 16 servers, 52 € per server.
[root@bruno ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/hda6 996M 312M 633M 33% /
/dev/sda1 226G 188M 214G 1% /backup
/dev/hda1 99M 16M 79M 17% /boot
tmpfs 1.6G 0 1.6G 0% /dev/shm
/dev/hda8 201G 188M 191G 1% /home
/dev/hda7 996M 34M 911M 4% /tmp
/dev/hda2 9.5G 824M 8.2G 9% /usr
/dev/hda3 9.5G 375M 8.7G 5% /var
How to put more space in / var ?
I want to take advantage of the / home and put in / var
programatic/scriptable way to find out which disk a file is on. For example, if I look at the output of: stat /root/.bashrc I see:
File: `/root/.bashrc'
Size: 1298 Blocks: 16 IO Block: 4096 regular file
Device: fd00h/64768d Inode: 13991942 Links: 1
Access: (0644/-rw-r--r--) Uid: ( 0/ root) Gid: ( 0/ root)
Access: 2008-05-18 09:19:14.000000000 -0400
Modify: 2007-12-18 09:19:54.000000000 -0500
Change: 2007-12-18 09:19:54.000000000 -0500
So I can see this is on device 64768, but how do I get from there to knowing that 64768 is really /dev/sda1, where in this example, I know the file actually is?
Overall, I want to resolve from the filename which device in the output of iostat contains that file - I don't necessarily have to go through stat, but it looks like a promising starting point.
the device which i transfer the full backups to through ( wget ) is full 100 %
Disk /dev/sda2 (/) ............ 100 %
i want to know if there is some safe way to make the space of the device larger?
as the cpanel is suspended for that reason
and how to know the files in that device and delete what i don't want
centos 5.2
cpanel 11.23
We have a customer requirement to enable Direct Push email on our Outlook Web Access servers to a number of mobile devices the customer will be supplied from Vodafone - running Windows Mobile 5
Therefore we need to create a public HTTPS address to allow access to the OWA/OMA part.
We do NOT (at this stage) want to allow general access to OWA over HTTPS (we have an eGap solution with RSA for this) so we need to be able to lock down access to the OWA server only to specific devices. One way would be to use Firewall Rules at the Outer DMZ and lock down by the IP ranges of the phone but thats prohibitive to other devices and will fail when the phones change IP (i.e. international roaming)
Therefore Im wondering if we can use self signed SSL certs where there is no trusted CA provider (if there was all browsers would simply be prompted to trust the source and then get access). If we use our own self signed certs and have them installed on the client devices would this work? What would be the downsides (i.e. less cryptogrpahy without the CA part?)
i have a Centos server that install Xen and hypervm in it.
i have some vps in this server.
i restart server and after that i get this eror for run vps :
Could Not Start Vps, Reason: Error: Device 0 (vif) could not be connected. Could not find bridge, and none was specified:
how can i solved this problem ?
my server is : Centos5.2
what network device would suit our needs (and whether there is something like what we need).
The device should meet following criteria:
-it should appear as one device only: a L2 switch is not an option as the device has to announce only one MAC address on the uplink port
-plug&play: a gigabit L3 switch is not an option because we would have to change the default gateway of the already configured servers to the L3 switch's IP
-gigabit ports
Is there any reliable device that could be used for this purpose?
I will be running Plesk.
I only need 1 user, Administrator with full Remote Desktop Connection access.
But I need to be able to serve websites using Plesk.
I was just upgrading my system packages using up2date, and got this error...:
Code:
Testing package set / solving RPM inter-dependencies...
########################################
libpng-1.2.2-27.i386.rpm: ########################## Done.
libpng-devel-1.2.2-27.i386. ########################## Done.
libpng10-1.0.13-17.i386.rpm ########################## Done.
libpng10-devel-1.0.13-17.i3 ########################## Done.
rh-postgresql-7.3.19-1.i386 ########################## Done.
rh-postgresql-devel-7.3.19- ########################## Done.
rh-postgresql-libs-7.3.19-1 ########################## Done.
rh-postgresql-python-7.3.19 ########################## Done.
rh-postgresql-server-7.3.19 ########################## Done.
samba-3.0.9-1.3E.13.2.i386. There was some sort of I/O error: [Errno 28] No space left on device
But I do have space on all my partitions...
Also installing only the samba package it fails:
Code:
Testing package set / solving RPM inter-dependencies...
########################################
samba-3.0.9-1.3E.13.2.i386. There was some sort of I/O error: [Errno 28] No space left on device
im using RHEL 3 + cPanel.
I run some tests with an Apache 2.4.10 running on W2k3 Server to see if Videos are playing well. The site is protected with .htacess/.htpasswd for now. I use jwplayer as player. The videos run fine on FF and IE, but as soon as I want to play them on an IOS 8 device (Iphone, Ipad), it doesn't work anymore. The message I get is "File cannot be played". The odd part is - when I remove .htaccess/.htpasswd, it works immediately. IOS devices, or is there something specific to be set to make this work? I logged in to the site with user and password, which always worked flawlessly. I assume it's not an Apache problem, since it runs fine on FF, but maybe someone here is aware of such a bug or something.
View 3 Replies View Relatedi have a problem when i wget anyfile after i install
APF+BFD into my server
my server is VPS ..
my VPS details is
---------------------
Server Name: bOx
User Name: b0x
Operating System: CentOS 5
RAM: 512 MB Guaranteed 2 GB BurstedTotal
Disk Space: 10 GB
Bandwidth Quota: 500 GB
Quota Used: 0 GB
Control Panel Type: cPanel (license enabled)
Server IP Address: 72.152.456.37
---------------------
now my VPS when i restart my APF its show me this
eth0: error fetching interface information: Device not found
eth0: error fetching interface information: Device not found
and my SSH Froze in this ..
Warning: Unknown(): write failed: No space left on device (28) in Unknown on line 0
Warning: Unknown(): Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/tmp) in Unknown on line 0
I am getting this error on my site. I have googled this error and it is telling me it relates to a /temp/ folder of some form. I am currently on a hosting plan (not a dedicated server). Is there ANY way I can access to fix this problem either from my control panel or by code?
kernel: EXT3-fs error (device loop0): ext3_lookup: unlinked inode 12286 in dir #2
kernel: EXT3-fs error (device loop0): ext3_journal_start_sb: Detected aborted journal
EXT3-fs error (device loop0): ext3_lookup: unlinked inode 12286 in dir #2
OP: Linux Centos
I just got an additional 500GB hard drive added and mounted it to /home2
There are files that are in /home1 (orginal HD) that will need to be constantly moved over to /home2 via a ftp
But i keep getting this error
550 Rename/move failure: Invalid cross-device link
Does anyone have any ideas? I tried changing permissions but no luck also tried mounting the 2nd hard drive within a directory in /home1. Still gives the error.
So I have a script running on my apache that catalogs pictures and clips. All the actual video files are located on a separate drive which is mounted in to a folder in my site. I've set apache as the owner and have the correct permissions on the mounted folder but I'm getting Forbidden errors accessing files even when on html file in the mounted folder.
I know it's a permissions issue at the disk or mounting level. The way I mount is by using this command:
mount -t ext4 /dev/sdc /var/www/html/media
I am using virtuozzo firewall to secure access.
I enter 58.27.175.211/255.255.255.0 for Source Address and Netmask for port 22.
But still I can connect using 58.181.103.217 or 58.27.151.120.
Second is it possible to enter two different ip address in source address?
I just bought a new ip address and want to setup this new ip as my server's main ip, making the 'existing main ip' as the secondary ip.
Which means, this new ip will be the server's default ip address for all services, including when connecting to other server.
I'm using CentOs 4.5 and swsoft's panels: HSPcomplete & Virtuozzo Power Panel, and Webmin.
I want to redirect a website to a particular URL so that the address bar shows the same URL and not the destination URL. I know it is possible via URL masking, however, I want it in such a way that whenever somebody clicks on any link in the website, the address bar should still show the original URL. To put it in simple words, Suppose I want to redirect [url] to [url]. Now if there is a link named contact/index.htm and somebody clicks on it the address bar should display [url]and not redirect to [url]
How can it be possible using URL Rewrite method in .htaccess file?
The problem usually goes like this:
- I can't access the webserver
- I'll try to restart httpd, and I'll get
Starting httpd: (98)Address already in use: make_sock: could not bind to address [::]:443
To fix this, I run
[root@www1 ~]# lsof -i tcp:443
COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME
perl 11307 apache 4u IPv6 476943447 TCP *:https (LISTEN)
There is always leftover process that is causing the restart to fail. Once i force kill the process, I am able to restart httpd properly.
Now it is ok if this just occurs once in a while, but this problem keeps repeating itself almost everyday at 4am server time (cron time?). What can I do to permanently fix this?
im still getting the following error
Code:
root@main [/tmp/apf-9.7-1]# ./install.sh
Installing APF 9.7-1: eth0: error fetching interface information: Device not found
Completed.
Installation Details:
Install path: /etc/apf/
Config path: /etc/apf/conf.apf
Executable path: /usr/local/sbin/apf
Other Details:
eth0: error fetching interface information: Device not found
cp: cannot stat `/etc/apf.bk.last/vnet/*.rules': No such file or directory
Imported options from 9.7-1 to 9.7-1.
Note: Please review /etc/apf/conf.apf for consistency, install default backed up to /etc/apf/conf.apf.orig
my host has said
Code:
edit the apf.conf file to venet0:0 instead of eth0
which ive done and im still getting the error, Ive pasted my current conf.apf config below
Code:
#!/bin/sh
#
# APF 9.7 [apf@r-fx.org]
# Copyright (C) 1999-2007, R-fx Networks <proj@r-fx.org>
# Copyright (C) 2007, Ryan MacDonald <ryan@r-fx.org>
# This program may be freely redistributed under the terms of the GNU GPL
#
# NOTE: This file should be edited with word/line wrapping off,
# if your using pico/nano please start it with the -w switch
# (e.g: pico -w filename)
# NOTE: All options in this file are integer values unless otherwise
# indicated. This means value of 0 = disabled and 1 = enabled.
##
# [Main]
##
# !!! Do not leave set to (1) !!!
# When set to enabled; 5 minute cronjob is set to stop the firewall. Set
# this off (0) when firewall is determined to be operating as desired.
DEVEL_MODE="1"
# The installation path of APF; this can be changed but it is not recommended.
INSTALL_PATH="/etc/apf"
# Untrusted Network interface(s); all traffic on defined interface will be
# subject to all firewall rules. This should be your internet exposed
# interfaces. Only one interface is accepted for each value.
IFACE_IN="venet0"
IFACE_OUT="venet0"
# Trusted Network interface(s); all traffic on defined interface(s) will by-pass
# ALL firewall rules, format is white space or comma separated list.
IFACE_TRUSTED=""
# This option will allow for all status events to be displayed in real time on
# the console as you use the firewall. Typically, APF used to operate silent
# with all logging piped to $LOG_APF. The use of this option will not disable
# the standard log file displayed by apf --status but rather compliment it.
SET_VERBOSE="1"
# The fast load feature makes use of the iptables-save/restore facilities to do
# a snapshot save of the current firewall rules on an APF stop then when APF is
# instructed to start again it will restore the snapshot. This feature allows
# APF to load hundreds of rules back into the firewall without the need to
# regenerate every firewall entry.
# Note: a) if system uptime is below 5 minutes, the snapshot is expired
# b) if snapshot age exceeds 12 hours, the snapshot is expired
# c) if conf or a .rule has changed since last load, snapshot is expired
# d) if it is your first run of APF since install, snapshot is generated
# - an expired snapshot means APF will do a full start rule-by-rule
SET_FASTLOAD="0"
how to transfer file(s) from remote server to remote ftp using ssh(on remote server)?
View 3 Replies View RelatedI have windows servers that I'll be co-locating very soon. I have purchased a Dell 2161ds-2 and an APC remote boot power strip. Could someone please tell me the best way to secure remote access to these products. Do I put them on public IP's and allow them through the firewall or do I put them behind the firewall and access them after I authenticate through the firewall.
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