Is there a built-in way to proxy SSH through socks5?

Question

I have a Socks5 proxy that uses username/password authentication. I can use it with SSH using NCAT in the ProxyCommand: ssh -o ProxyCommand="ncat --proxy-type socks5 --proxy-auth username:password --proxy socks5.proxy.domain:1080 %h %p" root@ssh.server.domain

I'm using ncat from the NMAP package because the built-in nc command doesn't handle Socks5 proxy authentication.

Is there a simpler way of doing this without requiring nmap to be installed on the client?

Since afaik openssh has no native socks5 client support you need an external proxy command that does. (But you can configure the settings in your .ssh/config to have a more manageable command line.) — Bob, Jan 23 '21 at 09:07

score 0 · Answer 1 · answered Jan 23 '21 at 08:58

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There's no built-in support for SOCKS5 proxy since ProxyCommand is generic enough that it provides support for any kind of proxy.

However nc does support SOCKS5 using -X 5 so there's no need for ncat.

answered Jan 23 '21 at 08:58

Ginnungagap

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nc supports Socks5, but not username/password authentication, as far as I know – ykaganovich Jan 23 '21 at 18:30
Ah I hadn't caught the authentication bit, I'm not sure about that through the basic `nc`. – Ginnungagap Jan 23 '21 at 18:49

Is there a built-in way to proxy SSH through socks5?

1 Answers1