Cisco Collaboration endpoints are exchanging encrypted signaling messages. What is one complication in implementing NAT ALG for voice and video devices?
A.
NAT ALG is not compatible with the H.323 signaling protocol.
B.
NAT ALG introduces latency in the media path.
C.
The NAT ALG cannot inspect the contents of encrypted signaling messages.
D.
NAT ALG requires the use of NAT reflection, which may not be supported on all firewalls.
A NAT ALG is similar to a firewall ALG, but a NAT ALG actually changes (maps) the addresses and ports in the signaling messages. The NAT ALG cannot inspect the contents of encrypted signaling messages.
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/srnd/collab11/collab11/security.html
upvoted 2 times
...
Log in to ExamTopics
Sign in:
Community vote distribution
A (35%)
C (25%)
B (20%)
Other
Most Voted
A voting comment increases the vote count for the chosen answer by one.
Upvoting a comment with a selected answer will also increase the vote count towards that answer by one.
So if you see a comment that you already agree with, you can upvote it instead of posting a new comment.
Ol_Mykhailiuk
5 days, 19 hours ago