Threat Level: green Handler on Duty: Johannes Ullrich

SANS ISC: TCP/UDP Port Activity - SANS Internet Storm Center TCP/UDP Port Activity

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Port Information
Protocol Service Name
tcp sip SIP
udp sip SIP
[get complete service list]
User Comments
Submitted By Date
Lou 2011-09-05 07:43:23
Have been getting constant registration attempts to my asterisk server from since 1-sep-2011. Address has been blocked on my firewall but attempts have not stopped.
2011-04-20 14:01:30
Recevied lot of asterisk attacks
Taneli Otala 2008-12-11 01:19:00
In the last few weeks, I've seen a number of attacks using my asterisk server to phish and phone-spam all over the US
2004-09-09 06:58:46
Used by SIP VOIP phones, X-ten Lite/Pro for instance. Thus VOIP providers, such as use this.
Brett 2004-07-14 00:35:50
This is one of the ports Vonage uses to connect to the Analog Telephone Device that they provide. Other ports are UDP 5060-5061 and UDP 10000-20000
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