Fix ssh connection delays

SSH connections on MacOS are sometimes taking too long time although ssh server is fast. Some modifications on client side and server side can fix this.

Client Side Configuration

sudo nano /etc/ssh/ssh_config

Replace this line:

# GSSAPIKeyExchange no

to:

GSSAPIKeyExchange no

Server Side Configuration

nano /etc/ssh/sshd_config

Replace this line:

# UseDNS no

to:

UseDNS no