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paa
New Member

SIP and ASA NAT

Hi!

I try to do static NAT to redirect SIP (udp 5060) from outside ASA interface to CCM 6 on the inside network. NAT works fine (redirect packet to CCM), but inside SIP packet address wasn't changed by ASA, so SIP didn't work. How can I fix this problem?

4 REPLIES
Cisco Employee

Re: SIP and ASA NAT

is inspection turned on ?

paa
New Member

Re: SIP and ASA NAT

Hi! Yes, "inspection sip" is enabled (global settings). ASA 7.07 version. I think that inspection doesn't work in my case or ASA doesn't implement inspection for static NAT.

Please, help!

Cisco Employee

Re: SIP and ASA NAT

uprade the OS to 7.2.4, there are couple bugs related to Inspect sip where the address is not modified in the transport header

Bronze

Re: SIP and ASA NAT

Can you try to do a static 1-to-1 translation and test if the SIP inspection is changing the IP address.

Also if you can post the debug sip and debug sip ha I can confirm you the problem.

Regards,

Luis Sandi

.:|:.:|:.

P.S Please mark this question as answered if it has been resolved. Do rate helpful posts.

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