multiproxy

Multiproxy is a high-performance TCP proxy server capable to run multiple proxies at the same time. Supports up to 1023 proxies and 1024 active connections (configured in source code). It's a single-threaded and single-process application using epoll() for non-blocking and edge-triggered operations.
It can proxy any TCP traffic including TLS and file transferring (e.g. scp, ssh).

Compilation

git clone https://github.com/guzlewski/multiproxy
cd multiproxy
make
make nolog

make nolog - enable log output to console make nolog - disable log output to console, may improve performance

Usage

./multiproxy.out local_host1:local_port1:remote_host1:remote_port1 local_host2:local_port2:remote_host2:remote_port2 [...]

local_host1 - IP or hostname that the first proxy is bound to and listening
local_port1 - port number that the first proxy is bound to and listening
remote_host1 - IP or hostname that the first proxy is redirecting traffic to
remote_port1 - port number that the first proxy is redirecting traffic to

Second and following proxies are optional.

local_host2 - IP or hostname that the second proxy is bound to and listening
local_port2 - port number that the second proxy is bound to and listening
remote_host2 - IP or hostname that the second proxy is redirecting traffic to
remote_port2 - port number that the second proxy is redirecting traffic to

Examples

./multiproxy.out 0.0.0.0:80:127.0.0.1:8080 0.0.0.0:443:127.0.0.1:8443

Expose local web server listening on 8080 and 8443 to public IP and ports 80 and 443.

./multiproxy.out 0.0.0.0:22000:192.168.1.44:22

Expose the ssh server of the computer in a private LAN network to public access on port 22000 and your IP.

./multiproxy.out 10.10.10.20:22:192.168.1.44:22

Expose ssh server of computer in private LAN network to other private network access on port 22 and 10.10.10.20 IP.