× Few antiviral products inadequately detect 3proxy as Trojan.Daemonize, Backdoor.Daemonize, etc and many detect 3proxy as a PUA (potentially unwanted program). It may cause browser warning on download page. 3proxy is not trojan or backdoor and contains no functionality except described in documentation. Clear explanation of this fact is given, for example, in Microsoft's article.

3proxy tiny free proxy server


Hot news: 3proxy 0.9.5 released March, 11 2025.
0.9.5

!!Security fix: proxy can potentially crash on on some platforms due to overlapping regions in strcpy()
+ new proxy service type: tlspr - SNI proxy, may also be used as parent tls type, sniffs hostname from TLS handhake, read more
+ new proxy service type: auto - autodetect proxy type between proxy and socks
+ SSLPlugin is rewritten, production-ready, supports TLS (SSL) server (may be used to create https:// type proxy), certificates checks and cypher options, read more
+ -g option is added for grace delay to reduce CPU load, read more
! Multiple minor bugfixes
! More supported sockets options

0.9.4

! Fix: invalid handling of '-' character in ACL hostname
! Fix: minor bugfixes and improvements
+ parentretry command added (defaults to 2) to retry connections to parent proxies
- icqpr related code (OSCAR proxy) removed, due to drop of OSCAR support by messengers

0.9.3

Bugfixes:
Fixed: systemd description file (proxy may fail to start after reboot or via systemctl)
Fixed: group/account creation in installation scripts
Fixed: countall/nocounall do not work in some configurations
Fixed: counters do not work if counter file is not specified
Fixed: counters without rotation (type N) are incorrectly shown in web admin interface
Fixed: %n may be incomplete or missed in long log records
Fixed: connect back functionality does not work

Improvements:
+ Docker builds

0.9.2

Bugfixes:
Fixed: bandwidth limiters (once again)
Fixed: data filtering plugins (PCREPlugin, SSLPlugin). SSLPlugin use on Linux requires to disable splice (-s0)
FIxed: standalone proxies do not react on HUP (Ctrl+C) in Linux/Unix
Fixed: few minor bugs

Improvements:
+ deb for arm platforms (experimental)
+ Openssl 1.1 support for SSLPlugin

0.9.1 - bugfix release

Bugfixes:
Fixed: socket may be closed before all data received/sent
Fixed: bandlimin non-working
Fixed: countall/nocountall
Fixed: few race conditions

0.9 intoduces socket options including interface binding for Linux, connection limits and connection ratelimits, user session binding to IP, zero-copy mode for Linux, multiple IPv6 improvements, preliminary RADIUS support, ARM support for Windows. It's recommended to update to 0.9 branch from any older versions.

0.9 now is a stable branch, 10 is a development branch, security-related fixes will be backported to 0.8 branch.

Download: http://3proxy.ru/download/

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.

It may be compiled with Visual C or gcc. Native Win32/Win64 versions included in archive and supports installation as a service. Currently 3proxy is tested to work under Windows since 98 (Windows before Vista reqires lite version) and up to latest version both i386 and x64, FreeBSD/i386/x64, NetBSD/i386/x64, OpenBSD/i386/x64, Linux/i386/x64/PPC/Alpha/arm, Mac OS X, Solaris/i386/x64.

3proxy is absolutely free (FreeWare) and open source. It can be used under terms of GNU/GPL. Starting from 0.6 version BSD-style license is used and any compatible license (Apache license, GPL, LGPL) may be used instead.

For licensing or commercial support questions please e-mail to 3proxy@3proxy.ru
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Contributors: