Blocking SIP Scanners

[GSD1]

Hi,

I have recently started getting random SIP Scanner calls to my UKDDI number on my OBI200.

I added the following numbers to X_BlockedCallers:

201,2020,8001,3001,2001,1001,4001,5001,6001,7001

As X_BlockedCallers is limited to 10 numbers I started getting incremental 4 digit SIP Scanner calls. So can I add a Digit Map with a range/wildcard e.g.

User Settings >> User Defined Digit Maps:

DigitMap: (20X|1XXX|2XXX|3XXX|4XXX|5XXX|6XXX|7XXX|8XXX|9XXX)

Will this block all 4 digit (SIP Scanner) numbers (and 20X) from calling and I can still receive calls with longer than 4 digits?

Thanks

[ianobi]

Have a read through this thread:

http://www.obitalk.com/forum/index.php?topic=5467.msg35387#msg35387

Methods 2 & 4 described there are easy to implement and very effective for most users.

[Mango]

Set your X_UserAgentPort to a random number between 20000 and 65535, for example, 58192.

This will make it more difficult for the scanners to find you, but not impossible.  The best solution is to place your device behind a firewall.  A restricted cone NAT firewall will only allow traffic from your VoIP service provider.  All other traffic will be dropped, before it reaches your ATA.  My favourite firewall is a Tomato router.

[GSD1]

Set your X_UserAgentPort to a random number between 20000 and 65535, for example, 58192.

This will make it more difficult for the scanners to find you, but not impossible.  The best solution is to place your device behind a firewall.  A restricted cone NAT firewall will only allow traffic from your VoIP service provider.  All other traffic will be dropped, before it reaches your ATA.  My favourite firewall is a Tomato router.

Thanks Mango, so I can just try this setting first:
Set your X_UserAgentPort to a random number between 20000 and 65535, for example, 58192