Host server
    HostName some.server
    User git
    IdentityFile ~/.ssh/id_ed25519
    IdentitiesOnly yes

Host server2
    Hostname 192.168.113.18
    User root
    ProxyJump root@web:22
    IdentityFile ~/.ssh/id_rsa
    IdentitiesOnly yes

ssh username@jumphost -N -f -L localport:targethost:targetport