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Topic review


juul wrote:

Those appear in the lists in the PuTTY settings.

But in a development version only. Not in the stable one.

This is actually not entirely the same, its because WinSCP is missing a cipher and key exchange algorithm.

I ran into the same problem when connecting to a hardened server. The policy of this server had to be relaxed to allow WinSCP to connect because the server was very strict at first.

The cipher missing is: ChaCha20 (SSH-2 only)
The key exchange algorithm missing is: ECDH key exchange

Those appear in the lists in the PuTTY settings, however in WinSCP these do not appear in the cipher and kex selection policy lists.

Couldn't agree on key exchange algorithm (hardened server)


I followed the instructions for "modern compatibility" listed here:

So these are my cipher settings in /etc/ssh/sshd_config:


Unfortunately, this breaks WinSCP. PuTTY 0.65 has no issues, so perhaps this is just an issue where an upgrade is required. This issue looks very similar to

Jonathan Yu