rinetd epoll

rinetd version 1.13 use epoll instead of select,support setuid after bind, support ipv6, support auto choose event mode(epoll/select).

This version tested on debian 10 and debian 11.

• epoll support
• IPv6 support
• setuid after bind
• UDP support

Configuration

choose events in rinetd.conf

events auto
#events epoll
#events select

if you don't choose events mode, it will auto choose auto

set linux user after bind, if not have root access, this config is not work

#user nobody
user www-data

user will change to www-data after bind

set forwarding rules in rinetd.conf

# bindadress       bindport     connectaddress  connectport  
127.0.0.1          80          192.168.1.12     80
2001:fada:327::1   3389        192.168.1.12     3389
192.168.1.10       4000        127.0.0.1        3000
fd00:1a29:1e12::1  22          192.168.1.12      22
::1                5555        10.0.0.6         1234       

forwarding http(s) example

::           80        127.0.0.1     8080
::           443       127.0.0.1     8443

forwarding cowrie ssh example.

cowrie bind in 127.0.0.1:2222

::           22        127.0.0.1     2222

:: mean bind all ip address include ipv4&ipv6.

if you want only bind ipv4 address, please use 0.0.0.0

0.0.0.0           22        127.0.0.1     2222

build

gcc version must be 8.3.0 or later

use make to build binary

make

make static will build static binary

make static

make install will install rinetd in system.

make && make install

Development

update 1.13, fixd connection break in x64.

none

警告,该代码可能存在问题,可以使用这个版本https://github.com/notcomsed/reforward

Warning: this code may have some problem , please use this version https://github.com/notcomsed/reforward

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源代码来自这个版本https://github.com/boutell/rinetd 0.62

更新: 已修复1.12,epoll模式在debian 10x64 下会自动断开连接,请用1.13版本.