SSH connection to CISCO cannot be established (wodSSH / wodSSH.NET)

by Tomas Malecek, Tuesday, December 04, 2018, 13:54 (2192 days ago)

Hi *,

We have encountered problem using wodSSH.NET library together with CISCO switch.

Traces from CISCO cannot be obtained but from Wireshark I can see that CISCO does not responds to initial offer "Protocol (SSH-2.0-WeOnlyDo.Net)".

We have traces from other devices(and servers) and it is working, however I see that most SSH servers are unable to match the software version "weonlydo.net". Although they switch to compatibility mode and SSH connection is established.

CISCO switch SF350-24 with firmware version 7.3p1
wodSSH.NET version: 2.6.4.162

Traces from debian server (working SSH):
Nov 19 10:55:05 ENG-AUS-COR-408 sshd[19218]: Connection from 10.199.77.53 port 51207 on 10.199.77.5 port 22
Nov 19 10:55:05 ENG-AUS-COR-408 sshd[19218]: debug1: Client protocol version 2.0; client software version WeOnlyDo.Net
Nov 19 10:55:05 ENG-AUS-COR-408 sshd[19218]: debug1: no match: WeOnlyDo.Net
Nov 19 10:55:05 ENG-AUS-COR-408 sshd[19218]: debug1: Local version string SSH-2.0-OpenSSH_7.4p1 Debian-10+deb9u4
Nov 19 10:55:05 ENG-AUS-COR-408 sshd[19218]: debug1: Enabling compatibility mode for protocol 2.0