Citadel Groupware Install

Base install of required programs.sudo apt-get install clamav clamav-milter spamassassin citadel-suite amavisd-newInstall and Start Spamassassinvim  /etc/default/spamassassin# Change to one to enable spamdENABLED=1sudo /etc/init.d/spamassassin startSpamassassin is listening on port 783.tcp        0      0 127.0.0.1:783          ...

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HTTPS Traffic block in squid 2.6

Here are steps to configure Transparent proxy in SquidSteps for configuring transparent proxy for HTTPS protocol at port 443 in SQUID 2.6(steps tested on squid 2.6 running on RHEL 5.0)Configuring transparent proxy on port 80 for use with HTTP protocol is simple but involves some extra configuration to use transparent proxy with HTTPS protocol. We need to configure this because if we block a website say www.facebook.com it cannot be...

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Linux Local Yum Installation / Configuration

Step by Step: As there is dependencies issue in linux software installation. Yum is an application which resolves the dependencies issue. Let start to configure local yum. 1.       We required FTP server to configure yum locally or we can configure the same (local) server as FTP server. Following is the local server configuration. 2.       Start vsftpd service and anonymous access should...

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Public Share on Samba Server

Goal of this tutorial is to show you how to set up a public share on your Samba server that can be used by everyone on your network with all rights. This will enable everyone on a Windows machine to access this without a password.  Of course, this has security implications but it is a good way to get something working.  The next article will show you how to create a share for one user in which that one user is the only one who can...

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MRTG on Linux

The Multi Router Traffic Grapher is a network or resource monitoring tool used by System Administrators across the Globe. MRTG generates HTML pages containing PNG images, which provides a real time visual representation of network traffic and system resources. STEP 1: Install MRTG with required packages # yum install mrtg net-snmp net-snmp-utils -y STEP 2: Configure snmpd If you need to monitor localhost including...

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Configure or setup VNC server in linux rhel5 / centos5

How to Configure a VNC server In linux? #VNC Server configuration# #yum -y install vnc* For using this we need to setup a password for the server. We can set it by the linux command vncpasswd. #Set the password# #vncpasswd #Restart the service# #service vncserver start To make VNC server we need to run the following command. While executing it. it will create some files. #Run the server command# #vncserver or #vncserver :13 The display number....

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Blocking video files with rep_mime_type video/x-flv

There several type of video file formats. One of them is fllv : format used by streaming video service such as youtube, metacafe, etcWe are going to block thise file.The configuration file is :acl LOCALHOST src 127.0.0.1 acl LOCALNET_A src 192.168.0.0/24 acl FORBIDDEN_DESTINATION dstdomain "/etc/squid3/restricteddomains.txt" acl FORBIDDEN_VIDEO rep_mime_type video/x-flv http_access deny FORBIDDEN_DESTINATION http_reply_access deny FORBIDDEN_VIDEO http_access...

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How To Block/Deny Websites To Specific IP/Users/Time Using Squid Proxy

Assume you already have a working squid installation. Requirements: Some websites will only be blocked during office hours (8am to 12pm and 1:30pm to 6pm). Websites will be only blocked for specific IPs. Deny websites using keywords. Edit /etc/squid/squid.conf # vi /etc/squid/squid.conf Find the line "INSERT YOUR OWN RULE(S) HERE TO ALLOW ACCESS FROM YOUR CLIENTS" and add the following: acl morning_hours time M T W H F 8:00-12:00 acl evening_hours...

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