Before moving to this, you must have the basics of CSF. CSF, is the abbreviation of Config Server Security & Firewall. CSF is for configuring or managing your server firewall easily. CSf is the most commonly using firewall application to…
Firewall
Will restarting csf (csf -r) remove already defined custom iptables rules ?
Yep, it will! If you have a custom iptable rule defined in a CSF installed server, it may works, but restarting the CSF (csf -r) will remove the rule. CSF is one of the best free iptables managing tool for Linux…
Block whole countries accessing server/website except you wants – CSF
Hey guys! We already discussed one of the amazing option in CSF for blocking/allowing countries. The usage of “CC_ALLOW” and “CC_DENY” to allow and deny countries with its country code. You can refer this from the link added below: How…
Allow and Deny IP addresses on server using APF
It’s a useful option to protect the server from unwanted/unauthorized connections. By using basic iptables we can allow/deny IPs, but it’s not such simple. The applications like CSF or APF will help us to do the same simply using simple…
APF installation steps for Linux server – Command-line way
APF is the abbreviation of Advanced Policy Firewall. It is a policy based firewall system designed to configure firewall (IPTables rules) simply and user friendly. Configuring iptables is slightly hard without the help of an application like APF or CSF.…
What is the default configuration file for IPTables and where it is located – Linux
It’s quite simple and but very useful thing. I have already posted the basics of IPTables in Linux, you may check this for more details >> IPTables basics << The iptables rules are saved in the file “/etc/sysconfig/iptables” under a…
How to prevent DoS attack on server using IPTables or CSF
DOS is the abbreviation of Denial Of Service. It’s an attempt to make the server network resources unavailable to its intend users. We can identify it by checking if there any packet loss on the server simply by using PING.…