Network services definition for ssh

[dnoyeb]

Why does the network service definition for ssh in the file /etc/services include 22/udp? I thought ssh was just over tcp!?

[s3gfault]

ssh does not use the udp protocol, i believe what is happening here is that we are reserving udp traffic on port 22 so that no other application can claim it.

[dnoyeb]

For typo security purposes?