Heads Up :
The post you are writing will appear in a public forum. Please ensure all content is appropriate for public consumption. Review the employee guidelines for the community here.
first you have to get sure that you can access the standby using the standby ip address, for e.g ping it.for the ssh you have to login to the firewall and generate rsa key paires. because the each firewall on the failover set uses its own key paires,...
it seems to me that you are facing a problem with the tcp MSS, I think that your asa is dropping packets that exceed the mss advertized on the handshake phase, you can add the follwoing code to solve it:access-list http-list permit tcp any host serve...