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[Bug Report] Redsocks will forward non-redirected request to socks5 server #155

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TommyJerryMairo opened this issue Dec 8, 2020 · 0 comments
Open

[Bug Report] Redsocks will forward non-redirected request to socks5 server #155

TommyJerryMairo opened this issue Dec 8, 2020 · 0 comments

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@TommyJerryMairo
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TommyJerryMairo commented Dec 8, 2020 •
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Software Version

0.5

Operating System

ArchLinux

Bug Description

Redsocks will forward the TCP connection to the socks5 server when the original destination is the redsocks listening port

Expected Behaviour

Redsocks will reject and close the TCP connection when the original destination is the redsocks listening port

Reproduce Steps

  1. Connect to an ssh server with dynamic port forwarding(socks5) enabled
  2. Configure redsocks to listen to redirected connections on 127.0.0.1:31338 and forward it to socks5 server provided by the ssh
  3. Use socat TCP4-LISTEN:127.0.0.1:31338 - to connect at the socks5 server provided by ssh
  4. In the ssh shell, check the system log which states sshd[7858]: error: connect_to 127.0.0.1 port 31338: failed.
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