ckleea

Don't know if i configure sip domains can help?

http://www.smartvox.co.uk/astfaq_sip_domains.htm

bubblestar

應該會有一定作用。 但未必能防止對方亂撞，當然機會少了很多。

另一方面它也會局限了使用上的彈性，即是只能為預設的DOMAIN提供服務。如果我要給你掛電話，便可能造成不便。不過也真正做到了 Private Branch Exchange 中的 Private 了。

Qnewbie

[Dec 18 20:58:49] NOTICE[353]: chan_sip.c:16457 handle_request_register: Registration from '"Darkman" <siparkman@myipaddress>' failed for '96.44.146.48' - No matching peer found

Another attack type with "faked" ip address(using my ip address) to break into my asterisk server. 82 trials per second, which droves my little IP01 to 50% CPU power I need a better firewall to drop those meaningless attacks!!!

ckleea

回復 18# Qnewbie

Only way to try is to have stronger firewall set at router and very stron username/password.

bubblestar

If you guys have time, you may refer to the tutorial in BackTrack as below to see whether your VoIP system is strong enough or too vulerable to resist attack.   

http://www.backtrack-linux.org/wiki/index.php/Pentesting_VOIP