[cisco-voip] H323 authentication

[Dane Newman]

Hello All

I am very new to cisco voip and just starting to learn alittle.  Through my
studies I was left with a question about h323 security.  I am initially
setting up a cisco 2801 router as a gateway for my CUCM 7.0.  I have it
setup but the though came to mind is there anyway to set up any kind of
authentication between the CUCM and the cisco 2801 router?  If a malicious
user put up there own CUCM on the lan they could infact use my gateway to
make calls without such authentication? Sorry if I am missing something
obvious.
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