3proxy

"3Proxy tiny free proxy server is really tiny cross-platform (Win32/Win64&Unix) freeware proxy servers set. It includes HTTP proxy with HTTPS and FTP support, SOCKSv4/SOCKSv4.5/SOCKSv5 proxy (socks/socks.exe), POP3 proxy, SMTP proxy, AIM/ICQ proxy (icqpr/icqpr.exe), MSN messenger / Live messenger proxy (msnpr/msnpr.exe), FTP proxy, caching DNS proxy, TCP and UDP portmappers.

You can use every proxy as a standalone program (socks, proxy, tcppm, udppm, pop3p) or use combined program (3proxy). Combined proxy additionally supports features like access control, bandwidth limiting, limiting daily/weekly/monthly traffic amount, proxy chaining, log rotation, syslog and ODBC logging, etc.

It's created to be small, simple and yet very functional.

The features include:

        + HTTP/1.1 Proxy with keep-alive client and server support,
          transparent proxy support.
 + Anonymous and random client emulation HTTP proxy mode
 + FTP over HTTP support.
 + DNS caching with built-in resolver
 + HTTPS (CONNECT) proxy
 + SOCKSv4/4.5 Proxy
 + SOCKSv5 Proxy
 + UDP and bind support for SOCKSv5 (fully compatible with
   SocksCAP/FreeCAP for UDP)
 + Transparent SOCKS redirection for HTTP, POP3, FTP, SMTP, ICQ
 + POP3 Proxy
 + FTP proxy
 + DNS proxy
 + TCP port mapper
 + UDP port mapper
 + SMTP proxy
 + ICQ/AOL proxy
 + Threaded application (no child process).
 + Web administration and statistics
 + Plugins for functionality extension
 + Native 64 bit application for 64 bit OS, including 64-bit editions of
   Windows.
 + IPv6 support

        + Connect back proxy support to bypass firewalls
 + Parent proxy support for any type of incoming connection
 + Username/password authentication for parent proxy(s).
 + HTTPS/SOCKS4/SOCKS5 and redirection parent support
 + Random parent selection
 + Chain building (multihop proxing)
 + Load balancing between few network connections by choosing network
   interface
 + turnable log format compatible with any log parser
 + stdout logging
 + file logging
 + syslog logging (Unix)
 + ODBC logging
 + log file rotation (hourly, daily, weekly, monthly)
 + automatic log file comperssion with external archiver (for files)
 + automatic removal of older log files
 + Character filtering for log files
 + different log files for different servces are supported 

https://github.com/z3APA3A/3proxy 

https://3proxy.ru/ 

http://hackaday.com/2017/03/25/a-red-teamers-guide-to-pivoting/