Hello

To cut down on the number of hackers trying to break into an Asterisk
server, I'd like to simply move the SIP port from the standard UDP
5060 to something non-standard.

Since this server must be able to receive INVITEs from any SIP UA
(server or client), it appears that I must add an SRV record in the
DNS so that they can locate the server and the port used to reach it.

_sip._udp SRV 0 5060 host.tld.
www.voip-info.org/wiki/view/DNS+SRV

Are there pitfalls/traps I must pay attention to before going ahead
and add that type of record in the DNS?

What about internal SIP clients that register with Asterisk: Will they
query the DNS to find the SIP port also, or must reconfigure them all
to use the non-standard port Asterisk listens on?

Thank you.


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