Can a person harm me by "intercepting" packets?

Question

linux

Good afternoon. One person threatens to intercept my "taps" / packets, supposedly by some "machine", most likely when I connect from my home laptop to a remote linux server via SSH. This person advises somehow additionally "encrypt", but is SSH alone not enough?
Is it possible somehow to intercept passwords, management, etc., and is it possible to intercept without access to my home PC (it costs a poppy)?
How can you protect yourself from the PC and server side?

Answer 1

1) a certain person is showing off
2) hacking ssh is not a trivial task
3) just hammer it in
4) give a hint, did he learn the "taps" of the UK well?

Answer 2

• If he installed a trojan on your computer
  none of this is tap hijacking.
  another option is if you are using SSH1, which has not been used for several years. you need to use SSH2
  the only option is exactly what intercepting - if it controls your login to the server and mimics an SSH prompt.
  You can deal with this simply by going to the keys.
  but on the other hand - if he controls the entrance to your server - this is very serious and the punishment for him is also serious.

Answer 3

If you keep a close eye on where you connect (fingerprints of the SSH keys of the servers) you will notice if a person wants to use MiTM. The exception is hosts that you are connecting to for the first time. In general - VPN should finally reassure you.