[sshd] Require SSH protocol 2.

SSH protocol 1 is an older version with known vulnerabilities. This
commit requires `sshd` to use only the newer SSH protocol 2.

diff --git a/sshd/sshd_config b/sshd/sshd_config
index 4b5f40cde595aaf1e75d599281b4e77ac8b624ca..15c76ece679cc35b1eb735aa1718112606cc5fe3 100644 (file)
--- a/sshd/sshd_config
+++ b/sshd/sshd_config
@@ -21,6 +21,8 @@ Port 72
 #HostKey /etc/ssh/ssh_host_ecdsa_key
 #HostKey /etc/ssh/ssh_host_ed25519_key
 
+Protocol 2
+
 # Ciphers and keying
 #RekeyLimit default none