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iox

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Tool for port forward & intranet proxy, just like lcx/ew, but better

Why write?

lcx and ew are awesome, but can be improved.

when I first used them, I can't remember these complicated parameters for a long time, such as tran, slave, rcsocks, sssocks.... The work mode is clear, why do they design parameters like this(especially ew's -l -d -e -f -g -h)

Besides, I think the net programming logic could be optimized.

For example, while running lcx -listen 8888 9999 command, client must connect to :8888 first, then :9999, in iox, there's no limit to the order in two ports. And while running lcx -slave 1.1.1.1 8888 1.1.1.1 9999 command, lcx will connect two hosts serially, but it's more efficient to connect in concurrently, as iox does.

And what's more, iox provides traffic encryption feature. Actually, you can use iox as a simple ShadowSocks.

Of course, because iox is written in Go, the static-link-program is a little big, raw program is 2.2MB (800KB for UPX compression)

Feature

  • traffic encryption (optional)
  • humanized CLI option
  • logic optimization
  • UDP traffic forward (TODO)

Usage

You can see, all params are uniform. -l/--local means listen on a local port; -r/--remote means connect to remote host

Two mode

fwd

Listen on 0.0.0.0:8888 and 0.0.0.0:9999, forward traffic between 2 connections

./iox fwd -l 8888 -l 9999


for lcx:
./lcx -listen 8888 9999

Listen on 0.0.0.0:8888, forward traffic to 1.1.1.1:9999

./iox fwd -l 8888 -r 1.1.1.1:9999


for lcx:
./lcx -tran 8888 1.1.1.1 9999

Connect 1.1.1.1:8888 and 1.1.1.1:9999, forward between 2 connection

./iox fwd -r 1.1.1.1:8888 -r 1.1.1.1:9999


for lcx:
./lcx -slave 1.1.1.1 8888 1.1.1.1 9999

proxy

Start Socks5 server on 0.0.0.0:1080

./iox proxy -l 1080


for ew:
./ew -s ssocksd -l 1080

Start Socks5 server on be-controlled host, then forward to internet VPS

VPS forward 0.0.0.0:9999 to 0.0.0.0:1080

You must use in pair, because it contains a simple protocol to control connecting back

./iox proxy -r 1.1.1.1:9999
./iox proxy -l 9999 -l 1080       // notice, the two port are in order


for ew:
./ew -s rcsocks -l 1080 -e 9999
./ew -s rssocks -d 1.1.1.1 -e 9999

Then connect intranet host

# proxychains.conf
# socks5://1.1.1.1:1080

$ proxychains rdesktop 192.168.0.100:3389

enable encryption

For example, we forward 3389 port in intranet to our VPS

// be-controller host
./iox fwd -r 192.168.0.100:3389 -r *1.1.1.1:8888 -k 656565


// our VPS
./iox fwd -l *8888 -l 33890 -k 656565

It's easy to understand: traffic between be-controlled host and our VPS:8888 will be encrypted, the pre-shared secret key is 'AAA', iox will use it to generate seed key and IV, then encrypt with AES-CTR

So, the * should be used in pairs

./iox fwd -l 1000 -r *127.0.0.1:1001 -k 000102
./iox fwd -l *1001 -r *127.0.0.1:1002 -k 000102
./iox fwd -l *1002 -r *127.0.0.1:1003 -k 000102
./iox proxy -l *1003


$ curl google.com -x socks5://127.0.0.1:1000

Using iox as a simple ShadowSocks

// ssserver
./iox proxy -l *9999 -k 000102


// sslocal
./iox fwd -l 1080 -r *VPS:9999 -k 000102

License

The MIT license

iox's People

Contributors

eddieivan01 avatar

Watchers

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