haproxy

fast and reliable load balancing reverse proxy

HAProxy is a TCP/HTTP reverse proxy which is particularly suited for high availability environments. It features connection persistence through HTTP cookies, load balancing, header addition, modification, deletion both ways. It has request blocking capabilities and provides interface to display server status.

iprange

optimizing ipsets for iptables

This tool is capable of managing sets of IPs. Why to use iprange over any other aggregate ? * simpler * supports many input formats, all together in the same file * faster, actually a lot faster (thanks to the original design by Gabriel Somlo) * can reduce the subnets/prefixes to produce high-performing netfilter/iptables ipsets * can compare files with IPs to find if they overlap and to what degree * can find the IPs common to a set of files * can exclude IPs (merge a set of files while excluding all IPs matched by another set of files)