disable sip registration

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Asterisk Users 2 Comments

Is there a way to disable all SIP registration and block any requests? The
reason I’m asking is this particular Asterisk server will just be
originating calls. I’ve noticed sip attacks where the attacker attempts to
register a user 100x per second causing CPU to rise significantly.

2 thoughts on - disable sip registration

  • Gordon Henderson posted an iptables firewall script that ‘rate limited’
    INVITEs and REGISTERs.

    It should be trivial to modify that to always drop these packets.

    Unloading the SIP channel driver should also be effective 🙂