How to modify default key exchange method for ciscodump and sshdump?
Although I'm learning network monitoring for a while now, I was unable to locate a manual or guide how to make them to work. I generated several types and encryprion RSA key file, setup cisco ssh server password only authentication, I still get an error message on various types of devices. I tried to setup windows's openssh service, but it's manual is missing some keypoint how and what to write in the config files to setup this properly. If anyone guide me I would be very grateful.
When using SSH protocols, there are a range of key exchange (KEx) methods offered and the client and server then choose one based on a set of rules. It is generally possible to limit what is supported to force the KEx algorithm when running ssh client and/or servers. From your description, though, I don't see how this is the likely solution to your problem, which sounds like SSH basic connectivity. There are multiple moving parts to using these extcap tools in Wireshark, so how about start with the basics: what host OS system is running Wireshark: Windows, MacOS, Linux? What target system are you trying to connect to, Linux, Cisco router, something else?
Tip: before you try using these tools in Wireshark, make sure you can use ssh from the CLI of the Wireshark host OS to make connections as the user you plan to implement, and that ...(more)