varnish:
varnish - web accelerator Linux (FreeBSD licence)
Debug:
Fiddler - HTTP Debug Win32 (Freeware)
輕量級:
tinyproxy - A lightweight, non-caching, optionally anonymizing http proxy
privoxy - Privacy enhancing HTTP Proxy
hpsockd - SOCKS server
/usr/sbin/hpsockd
/usr/share/doc/hpsockd/examples/hpsockd.conf
iptables:
http://datahunter.org/proxy_iptables