TCP Transport ignoring Only Recv Request From Server, Sip spam calls allowed

Products Residential Wi-Fi
1

Hello,

Recently in testing it was discovered that the R200 and R201 running latest firmware ignore the Only Recv Request From Server / Server Address fields. If I enable TCP with this on and try making a sip call from my desktop (not in the server IP list) the call rings/goes through. (Verified via PCAPs) If I enable UDP, the ATA never responds to the invites.

Firmware: 4.3.4-R8(201712131041)  

Tim

2

Hi 

Please send below details to my  email Id( niraj.mahapatra@cambiumnetworks.com)

  • Networks of topology.
  • Device configuration.
  • The packet capture of WAN interface in below cases.
  1.                If TCP Transport is enabled 
  2.                if UDP Transport is enabled 

Regards

Niraj

Regards

Niraj

3

E-mailed you pcaps/info. Verified it on a second test ATA again using a private and a public IP. Had multiple customers reporting the same issue too, changing back to UDP transport fixed the server IP Address filter applying.