Installing Clam AntiVirus

Clamwin is an Open Source Software and comes with open source code, absolutely free of charge. All you have to do is download it and run it. It is based on the Clam AV technology for UNIX and has been primarily designed to guard and scan email on mail gateways. To Install Clam AntiVirus on a linux (RHEL, CentOS) server without control panel: Download the repo file:  wget http://www.linux-mail.info/files/dag-clamav.repo This will save a file  dag-clamav.repo in the current location. Place the repo file in the correct repo location: mv dag-clamav.repo /etc/yum.repos.d Use yum to install yum install clamav clamav-devel clamd To update the virus definitions type:  freshclam To use this anti virus type:  clamsca...

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Copy files and folder via FTP to Linux Server (ncftp)

Check if ncftpget is already installed in your server by typing either one of the commands below. ncftp -h or which ncftpget If ncftpget is not installed please follow the steps below to install it.  1.  rpm -Uvh http://download.fedora.redhat.com/pub/epel/5/i386/epel-release-5-4.noarch.rpm 2. yum list *NCFTP* 3. yum install ncftp Please use this command to copy files to the server from an ftp server. ncftpget -R -v -u -p'' Please find an example below ncftpget -R -v -u frenchcastles -p'ss135623!@#' 76.34.45.123 /home/files ./* ./* indicate all files from root of ftp server....

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Prevent the IIS SMTP Virtual Server from Relaying E-mail Messages

1) Start Internet Information Services Manager or open the Internet Information Services (IIS) snap-in. 2) Expand Server_name, where Server_name is the name of the server, right-click Default SMTP Virtual Server, and then click Properties. 3) Click the Access tab, and then under Access control, click Authentication. 4) Click to select either or both the Basic authentication and the Integrated Windows authentication check boxes, click to clear the Anonymous access check box (if it is selected), and then click OK. By doing so, authentication is required before access is granted to the SMTP virtual server. In this case, if the user or computer does not successfully authenticate, the user or computer cannot send mail to the ...

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Basic steps to secure the server

To prevent exploits in our server, we can do some simple yet effective steps to secure our linux server. Its better late than never :) Disable SUID Change ssh port Disable root login Disable unneeded services and check open ports. Install a good firewall Apply TCP wrappers Install root kit detection Install mod_security Disable dangerous / unused PHP functions / harden your PHP Regularly update you packages Disable shell access to unwanted users. Use only command line access. Most important use long passwords for root (preferably 14-20 digits) It is advisable to configure a backup on a weekly basis to a remote server or our local syst...

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