SSH-trix
Fingerprints
You have modern OpenSSH but admins didn't provide you with ECDSA and/or SHA256 fingerprints:
ssh -v -o HostKeyAlgorithms=ssh-rsa -o FingerprintHash=md5 hostname
ssh -v -o HostKeyAlgorithms=ssh-dss -o FingerprintHash=md5 hostname
Links
Control Master
Lägg in i ~/.ssh/config
Host *
ControlPath ~/.ssh/master-%r@%h:%p
ControlMaster auto