1. Generate needed ssh key

mkdir ~/.ssh
chmod 700 ~/.ssh
ssh-keygen -t rsa -b 4096 -C "<user>@<host> server key" -f ~/.ssh/<user>_<host>.key

2. Install ssh key on ssh server

ssh-copy-id -i ~/.ssh/<user>_<host>.key <user>@<host>

3. Create ~/.ssh/config file

cat >> ~/.ssh/config <<EOL
Host *
    ServerAliveInterval 15
    ServerAliveCountMax 6
    Compression yes

Host <host>
    HostName <host-fqdn>
    Port 22
    User <user>
    IdentityFile ~/.ssh/<user>_<host>.key
    IdentitiesOnly yes
    ForwardAgent yes
    # this sets up a socks5 proxy
    DynamicForward localhost:1080
    # this sets up a local port to forward traffic to a remote host and port
    LocalForward 8080 <some-remote-host-fqdn>:80

# this sets up a remote git server accessible by ssh proxy above
#Host <remote-git-server>
#    HostName <remote-git-server>
#    ProxyCommand ssh <host> -W %h:%p
#    IdentityFile ~/.ssh/<remote-git-server>.key
#    User <remote-git-server-user>
EOL

chmod 600 ~/.ssh/*