We want to change the source UDP ports and have to define range (5060 - 5081) for destination IP = 195.23.145.1
We send call on 195.23.145.1 on destination port 5060 (SIP) but the carrier wants that our source UDP ports should also be in range of 5060 - 5081 which is the authentication parameters their side.
Example is here
When we run the command Sh ip sockets on cisco 7206 vxr we get below o/p
17 81.201.82.150 11875 80.65.13.58 17435 0 0 21 0
17 81.201.82.146 15329 80.65.13.58 19327 0 0 21 0
17 206.51.234.174 5060 80.65.13.58 58659 0 0 215 0
17 195.219.218.147 50275 80.65.13.58 18441 0 0 21 0
17 195.219.218.147 51771 80.65.13.58 16755 0 0 21 0
Above output is explained as:
- protocol used (TCP or UDP), 17 = UDP
- Source IP
- Source port (we need to define this in range this is the issue)
- destination IP
- destination port
In the above o/p the local ports which you see is randomly selected by CISCO we wish that these are randomly chosen in range of 5060 - 5081.
The IOS = IOS (tm) 7200 Software (C7200-P-M), Version 12.3(3b), RELEASE SOFTWARE (fc1)
We tried ip nbar custom command but it is not supported, only below options are available in ip bnar (no idea where to define a range).
pdlm PDL (protocol description language) Module
port-map Map well-known port of a protocol to a new port
resources Configure memory usage for tracking Stateful sessions
We appreciate if someone can help to solve this issue and meet our service provider's requirement of using specific source ports when sockets are established.
Thanks.
