I recently updated my CentOS 6.x x64 Droplet, against the Heartbleed virus, by following instructions in DigitalOcean community (https://www.digitalocean.com/community/articles/how-to-protect-your-server-against-the-heartbleed-openssl-vulnerability). After doing the update, the IPTABLES configuration are all gone and I am unable to configure the IPTABLES. Upon issuing the command iptables -A INPUT -p tcp --tcp-flags ALL NONE -j DROP I get the below error /lib64/xtables/libxt_tcp.so: /lib64/xtables/libxt_tcp.so: file too short iptables v1.4.7: unknown option `--tcp-flags' Try `iptables -h' or 'iptables --help' for more information. Seems the 'yum update' has screwed some libs. Can someone please help how to correct the error? This is draining me! Thanks, Sam