---
name: "simpleproxy"
section: "1"
platform: "linux"
package: "simpleproxy"
version: "3.5-1+b2"
release: "Debian 12 (Bookworm)"
platforms: ["linux"]
url: "https://new.carta.tech/simpleproxy"
---

# simpleproxy(1)

Simple tcp socket proxy

## NAME

simpleproxy - Simple tcp socket proxy

## SYNOPSIS

**simpleproxy**  \[-7\] \[-v\] \[-V\] \[-d\] \[-i\] \[-u\] -P \<*POP3 users file*\> -L \[\<*local host*\>:\]\<*local port*\> -R \<*remote host*\>:\<*remote port*\> \[-S \<*proxy host*\>:\<*proxy port*\>\]

## DESCRIPTION

The  *simpleproxy* program acts as a simple tcp proxy. It opens listening socket on local machine and forwards any connection to the remote host.

## OPTIONS

*simpleproxy accepts following options:*

- **-V**

  Version information.

- **-v**

  Makes *simpleproxy* to write activity information to *syslog* or *stderr*.

- **-7**

  Makes *simpleproxy* to strip 8th bit.

- **-i**

  Use this flag when starting *simpleproxy* from INETD.

- **-d**

  By default *simpleproxy* does not detach itself from control terminal and writes all messages to *stderr*. This option will detach it from terminal and make it write messages to  *syslog*.

- **-L \[\<*local host*\>:\]\<*local port*\>**

  Local host and port name or number to bind for listening. Host name is optional.

- **-R \<*remote host*\>:\<*remote port*\>**

  Remote host and port name or number

- **-P \<*POP3 users list*\>**

  If specified, simpleproxy will load list of users from the \<filename\> (one per line). After this it will be forwarding POP3 sessions only if client trying to authenificate as this user.

- **-S \<*proxy host*\>:\<*proxy port*\>**

  HTTPS proxy server host and port name or number.

- **-a \<*HTTPS Auth User*\>:\<*HTTPS Auth Password*\>**

  Authenticate to the HTTPS proxy server with the given userid and password. This option performs BASIC HTTP authentication as specified in RFC 2617. Used only in conjunction with -S.

- **-A \<*HTTP Auth User*\>:\<*HTTP Auth Password*\>**

  Requires HTTP proxy authentication. Client browser must supply username and password to use this proxy. This option performs BASIC HTTP authentication as specified in RFC 2617.

- **-u**

  URLs of visited pages are emitted on stdout. It is used for logging or for remote lecturing, if the output is redirected to a remote command that change a dynamic web page, it is possible to  synchronize all the learner web browsers to the same page visited by the instructor. (see the "simple remote lecturing" project on sourceforge).

- **-t \<*trace file*\>**

  If specified, simpleproxy will dump all data that passes through connection to the specified file.

## BUGS

Only *tcp* ports are supported.

## SEE ALSO

inetd(1M), services(4), http://www.crocodile.org/software.html

## AUTHOR

Vadim Zaliva \<lord@crocodile.org\>, Vladimir Karpinsky  \<vlad@noir.crocodile.org\> Vadim Tymchenko \<verylong@noir.crocodile.org\> Renzo Davoli \<renzo at cs dot unibo dot it\>

## CONTRIBUTORS

Pavel Roskin \<pavel\_roskin@geocities.com\>, Cedric Tefft \<cedric@earthling.net\> Christophe Bothamy \<cbothamy@sourceforge.net\> Ulf Harnhammar \<metaur@telia.com\>