How would I disable SIP on an Cisco router running IOS 12.x?
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Both Darren and Brett have answered below however it would be better to be a little clearer what you mean with future questions.– David RotheraMay 27 '13 at 19:54
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Depending on which version of 12.x you're on, you should be able to do the following:
router(config)#sip-ua
router(config-sip-ua)#no transport tcp
router(config-sip-ua)#no transport udp
This stops the router from listening on port 5060.
answered May 27 '13 at 19:32
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2There's also TLS. Cisco actually has this documented in a security bulletin. To be absolutely sure, include an acl on internet (insecure) links.– RickyMay 27 '13 at 23:26
If you mean how to disable the SIP ALG you can configure the following:
no ip nat service sip udp port 5060
