Error: "expected key exchange group packet from server” when using PuTTY to access Edge SWG (ProxySG) or ASG

Products

• ProxySG Software - SGOS

Issue/Introduction

When using SSH in PuTTY to access Edge SWG (ProxySG) or Advanced Secure Gateway (ASG), you receive the following error:

• PuTTY Fatal Error: expected key exchange group packet from server.

Resolution

1. In PuTTY, in the left pane, navigate to Connection > SSH > Kex.
2. Under Algorithm selection policy, select "Diffie-Hellman group exchange."
3. Click Down. This moves "Diffie-Hellman group exchange' out of the first position, to change the algorithm that is used.
4. Click Open.