EOS 4.22.1F adds support for disabling the IS IS authentication check for received IS IS PDUs. By enabling this

Authentication IS-IS 4.22.1F Rx Disabled

LDP per-neighbor authentication provides greater flexibility in the authentication of LDP routers in a network. Individual routers or groups of routers may be configured with different passwords to enhance security and to ensure certain routers do not exchange MPLS

Authentication LDP NEIGHBOR EOS 4.27.2F

The OSPFv2 Secure Hash Algorithms (SHA) Authentication support as defined in RFC 5709 supports the configuration of

Authentication OSPF 4.22.0F HMAC-SHA