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simple-proxy 🚀

A very simple TCP proxy tool (not http proxy) empowered by nio tcp framework py-netty

Installation

pip install simple-proxy

Usage

Usage: simple-proxy [OPTIONS]

Options:
  -l, --local-server TEXT         Local server address  [default: localhost]
  -lp, --local-port INTEGER       Local port  [default: 8080]
  -r, --remote-server TEXT        Remote server address  [default: localhost]
  -rp, --remote-port INTEGER      Remote port  [default: 80]
  -g, --global                    Listen on 0.0.0.0
  -c, --tcp-flow                  Dump tcp flow on to console
  -f, --save-tcp-flow             Save tcp flow to file
  -s, --tls                       Denote remote server listening on secure
                                  port
  -ss                             Denote local sever listening on secure port
  -kf, --key-file PATH            Key file for local server
  -cf, --cert-file PATH           Certificate file for local server
  --speed-monitor                 Print speed info to console for established
                                  connection
  --speed-monitor-interval INTEGER
                                  Speed monitor interval  [default: 5]
  -dti, --disguise-tls-ip TEXT    Disguise TLS IP
  -dtp, --disguise-tls-port INTEGER
                                  Disguise TLS port  [default: 443]
  -wl, --white-list TEXT          IP White list for incoming connections
                                  (comma separated)
  --run-mock-tls-server           Run mock TLS server
  -v, --verbose                   Verbose mode
  -h, --help                      Show this message and exit.

Features

Basic proxy (TLS termination)

> simple-proxy --tls -r www.google.com -rp 443 -lp 8080
Proxy server started listening: localhost:8080 => www.google.com:443(TLS) ...
console:False, file:False, disguise:n/a, whitelist:*
> curl -I -H 'Host: www.google.com'  http://localhost:8080
HTTP/1.1 200 OK
...
> simple-proxy -r www.google.com -rp 80 -lp 8443 -ss
Proxy server started listening: localhost:8443(TLS) => www.google.com:80 ...
console:False, file:False, disguise:n/a, whitelist:*
> curl -I -H 'Host: www.google.com' -k https://localhost:8443
HTTP/1.1 200 OK
...

Dump TCP flow

TCP flow can be dumped into console or files (under directory tcpflow)

> simple-proxy -r www.google.com -rp 443 -lp 8443 -ss -s -c -f
Proxy server started listening: localhost:8443(TLS) => www.google.com:443(TLS) ...
console:True, file:True, disguise:n/a, whitelist:*
> curl -k -I -H 'Host: www.google.com'  https://localhost:8443

tcpflow

Connection status monitor

> $ simple-proxy -r echo-server.proxy.com -rp 8080 -lp 48080 --speed-monitor
Proxy server started listening: localhost:48080 => echo-server.proxy.com:8080 ...
console:False, file:False, disguise:n/a, whitelist:*
Connection opened: ('127.0.0.1', 60937)
Connection opened: ('127.0.0.1', 60938)
Connection opened: ('127.0.0.1', 60939)
Connection opened: ('127.0.0.1', 60940)
Connection opened: ('127.0.0.1', 60941)
Connection opened: ('127.0.0.1', 60942)
Connection opened: ('127.0.0.1', 60943)
Connection opened: ('127.0.0.1', 60944)
---------------------------2024-02-12 17:43:02.337268 (total:8, rounds:1)---------------------------
[  1] | 127.0.0.1:60937       | Speed Rx:32.00 K/s  Tx:32.00 K/s  | Total Rx:235.00 K   Tx:235.00 K   | duration: 7s
[  2] | 127.0.0.1:60938       | Speed Rx:32.00 K/s  Tx:32.00 K/s  | Total Rx:235.00 K   Tx:234.00 K   | duration: 7s
[  3] | 127.0.0.1:60939       | Speed Rx:32.00 K/s  Tx:32.00 K/s  | Total Rx:235.00 K   Tx:234.00 K   | duration: 7s
[  4] | 127.0.0.1:60940       | Speed Rx:32.00 K/s  Tx:32.00 K/s  | Total Rx:235.00 K   Tx:234.00 K   | duration: 7s
[  5] | 127.0.0.1:60941       | Speed Rx:32.00 K/s  Tx:32.00 K/s  | Total Rx:235.00 K   Tx:234.00 K   | duration: 7s
[  6] | 127.0.0.1:60942       | Speed Rx:32.00 K/s  Tx:32.00 K/s  | Total Rx:234.00 K   Tx:234.00 K   | duration: 7s
[  7] | 127.0.0.1:60943       | Speed Rx:32.00 K/s  Tx:32.00 K/s  | Total Rx:234.00 K   Tx:234.00 K   | duration: 7s
[  8] | 127.0.0.1:60944       | Speed Rx:32.00 K/s  Tx:32.00 K/s  | Total Rx:234.00 K   Tx:234.00 K   | duration: 7s
Average Read Speed:  32765.0 bytes/s, Average Write Speed: 32752.88 bytes/s

Disguise as HTTPS server with whitelist

Any connection beyond whitelist will be served by a mock https server. Real service can thus be hided.

For example, you can protect your Scurrying Squirrel against attack from Grim Foolish Weasel.

> simple-proxy -rp 8388 -lp 443 -g  --run-mock-tls-server -wl=<your ip>,<your wife's ip>,<your friend's wife's ip> 

joey

Metadata

Release files for simple-proxy 0.0.11

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