[Email protected] call blocking *.

I see a lot of sip calls on my VCSe where [email protected] / * / ip ADDRESS or [email protected] / * / OR [email protected] / * /

I was looking through the forums and found

https://supportforums.Cisco.com/message/3401571#3401571

Source Destination Protocol duration status Peer Type shares at start

2013-11-15 12:26:27 sip:[email protected] / * / sip:[email protected] / * / <->SIP SIP 32 seconds 408 / Request Timeout view local VCS

2013-11-15 12:26:23 sip:[email protected] / * / sip:[email protected] / * / <->SIP SIP 32 seconds 408 / Request Timeout view local VCS

2013-11-15 12:26:20 sip:[email protected] / * / sip:[email protected] / * / <->SIP SIP 32 seconds 408 / Request Timeout view local VCS

2013-11-15 12:26:16 sip:[email protected] / * / sip:[email protected] / * / <->SIP SIP 32 seconds 408 / Request Timeout view local VCS

2013-11-15 12:26:13 sip:[email protected] / * / sip:[email protected] / * / <->SIP SIP 32 seconds 408 / Request Timeout view local VCS

2013-11-15 12:06:56 sip:[email protected] / * / sip:[email protected] / * / <->SIP SIP 32 seconds 408 / Request Timeout view local VCS

2013-11-15 12:00:53 sip:[email protected] / * / sip:[email protected] / * / <->SIP SIP 33 seconds 408 / Request Timeout view local VCS

2013-11-15 11:05:26 sip:[email protected] / * / sip:[email protected] / * / <->SIP SIP 32 seconds 408 / Request Timeout view local VCS

2013-11-15 10:14:14 sip:[email protected] / * / sip:[email protected] / * / <->SIP/SIP 32 seconds 408 / Request Timeout view local VCS

2013-11-15 10:08:32 sip:[email protected] / * / sip:[email protected] / * / <->SIP SIP 32 seconds 408 / Request Timeout view local VCS

It's my current CPL

I now would change to:

"http://www.Tandberg.net/Cpl-extensions" xmlns: xsi = "http://www.w3.org/2001/XMLSchema-instance" xsi: schemaLocation = "urn: ietf:params:xml:ns:cpl cpl.xsd" > "

"" [email protected] / * / "destination =". * » >

"" [email protected] / * / "destination =". * » >

Is THIS CORRECT?

It'll work, but you should have the two unathenticated and authenticated covered calls.

Given that all your calls seems to come from @VCS_IP, then you can block all destinations by using * instead of specifying the address. Below is part of the CPL I use and it works for me.

You can test if the CPL works or not using the VCS-E "tool to locate."

In addition, you must disable SIP UDP on the VCS-E unless you really need, as these scanners use UDP to find potential targets.

(Time only I had to re-activate if I have to make a call using the host name where the VCS-E did a search of A DNS record instead of using "normal" SRV records.)

If you have ISDN deployed gateways, then you should also seriously consider changing the prefixes you use, i.e. Add # to the prefix to break the dial string. For example if your prefix is 99 and you want to call 9912345678, then you dial 99 #12345678 instead.

Also see the deployment guide for more information about these issues - step 16, page 41 in particular

http://www.Cisco.com/en/us/docs/Telepresence/infrastructure/VCs/config_guide/Cisco_VCS_Basic_Configuration_Cisco_VCS_Control_with_Cisco_VCS_Expressway_Deployment_Guide_X7-0.PDF

/Jens

Please note the answers and score the questions as "answered" as appropriate.

Tags: Cisco Support

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