Articles by Sarmed Rahman
Sarmed Rahman is an IT professional based in Australia. He writes tutorial articles on technology every now and then from a belief that knowledge grows through sharing. During his free time, he loves gaming and spending time with his friends.
Mail Server Administration
- How a mail server works
- How to configure a mail server with Postfix and Dovecot for different requirements
- How to enable user authentication for a Postfix SMTP server with SASL
- How to secure a mail server using encryption
- How to set up a mail server in Ubuntu or Debian
- How to set up MailScanner, Clam Antivirus and SpamAssassin in CentOS mail server
- How to set up Clam Antivirus, SpamAssassin and MailScanner on Ubuntu mail server
- How to set up RainLoop webmail in Ubuntu server
- How to set up Zimbra mail server on CentOS
- How to set up Open WebMail in CentOS
BGP Router Administration
- How to turn your CentOS box into a BGP router using Quagga
- How to set up BGP Looking Glass server on CentOS
- How to set up IPv6 BGP peering and filtering in Quagga BGP router
- How to filter BGP routes in Quagga BGP router
- How to perform BGP traffic engineering using Quagga on Linux
- How to secure BGP sessions using authentication on Quagga
Network/Server Monitoring
- How to install and configure Cacti on Linux
- How to migrate Cacti to a new server
- How to combine two graphs on Cacti
- How to analyze Squid logs with SARG log analyzer on CentOS
- How to install and configure Nagios on Linux
- How to monitor server memory usage with Nagios Remote Plugin Executor (NRPE)
- How to monitor BGP sessions with Nagios
- How to configure Nagios for audio alerts and mobile notifications
- How to monitor common services with Nagios
- How to set up Nagios Remote Plugin Executor (NRPE) in Linux
- How to configure SNMPv3 in Ubuntu, CentOS and Cisco
- How to monitor Linux servers with SNMP and Cacti
DNS Administration
- How DNS works
- How to set up a primary DNS server using CentOS
- How to set up a secondary DNS server in CentOS
- How to close an open DNS resolver
Miscellaneous
- How to create a site-to-site IPsec VPN tunnel using Openswan in Linux
- How to set up Squid as a transparent web proxy on CentOS or RHEL
- How to use logrotate to manage log files in Linux
- How to manage IP addresses and subnets with phpIPAM
- How to set up NTP server in CentOS
- How to connect your LAN to Amazon Virtual Private Cloud
- How to set up HTTPS in Apache web Server on CentOS
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