Server Security – How to Protect Server from XMAS Attacks

You can protect your server from XMAS Attacks and drop incoming malformed XMAS packets by applying following rule in IPTable.

Login to your server via SSH as root and run following commands:

iptables -A INPUT -p tcp --tcp-flags ALL ALL -j DROP
/etc/init.d/iptables save
/etc/init.d/iptables restart


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