connect-proxy — connect over SOCKS4/5 proxy
connect-proxy [-dnhst45] [-R resolve ] [-p local-port ] [-w secs ]
[-H [user@]proxy-server[:port]] ] [-S [user@]socks-server[:port]] ]
[-T proxy-server[:port] ] [-c telnet-proxy-command ] [host] [port]
connect-proxy open connection over SOCKS4/5 proxies
Please, note that any HTTP-Proxy tunnel won’t work with content-
inspection firewall (unless using SSL).
-H specifies a hostname and port number of the http proxy server
to relay. If port is omitted, 80 is used. You can specify
this value in the environment variable HTTP_PROXY and pass
the -h option to use it.
-S specifies the hostname and port number of the SOCKS server to
relay. Like -H, port number can be omitted and the default
is 1080. You can also specify this value pair in the
environment variable SOCKS5_SERVER and give the -s option to
-4 specifies SOCKS relaying and indicates protocol version to
use. It is valid only when used with ’-s’ or ’-S’. Default
is ’-5’ (protocol version 5)
-R method to resolve the hostname. Three keywords ("local",
"remote", "both") or dot-notation IP address are acceptable.
The keyword "both" means, "Try local first, then remote". If
a dot-notation IP address is specified, use this host as
nameserver. The default is "remote" for SOCKS5 or "local" for
others. On SOCKS4 protocol, remote resolving method ("remote"
and "both") requires protocol 4a supported server.
-p will forward a local TCP port instead of using the standard
input and output.
-P same to ’-p’ except keep remote session. The program repeats
waiting the port with holding remote session without
disconnecting. To connect the remote session, send EOF to
stdin or kill the program.
-w timeout in seconds for making connection with TARGET host.
-d used for debug. If you fail to connect, use this and check
request to and response from server.
To use proxy, this example is for SOCKS5 connection to connect to
"host" at port 25 via SOCKS5 server on "firewall" host.
connect-proxy -S firewall host 25
SOCKS5_SERVER=firewall; export SOCKS5_SERVER; connect-proxy -s host 25
For a HTTP-PROXY connection:
connect-proxy -H proxy-server:8080 host 25
HTTP_PROXY=proxy-server:8080; export HTTP_PROXY; connect-proxy -h host
To forward a local port, for example to use ssh:
connect-proxy -p 5550 -H proxy-server:8080 host 22 ssh -l user
To use it along ssh transparently:
# not using proxy on lan
ProxyCommand connect-proxy %h %p
# mandatory to access the internet
ProxyCommand connect-proxy -H proxyserver:8080 %h %p
Or for all users ( /etc/ssh/ssh_config )
SOCKS5_USER, SOCKS5_PASSWORD, HTTP_PROXY_USER, HTTP_PROXY_PASSWORD,
CONNECT_PASSWORD, LOGNAME, USER
This manual page was written by Philippe Coval email@example.com for the
Debian system (but may be used by others). Permission is granted to
copy, distribute and/or modify this document under the terms of the GNU
General Public License, Version 2 any later version published by the
Free Software Foundation.
On Debian systems, the complete text of the GNU General Public License
can be found in /usr/share/common-licenses/GPL.