Voice over IP Cisco - Cisco UCM 5.1 + CP NGX 65 - SCCP drops

Author

Cisco UCM 5.1 + CP NGX 65 - SCCP drops - "Unknown

Andreu Gomez

2007-12-12, 1:12 am

Hi all,

we are trying to set up a lab environment for IP Telephony using 4500
switches, cisco UCM 5.1 and a nokia IP390 running ipso 4.2 and NGX 65, and
we're having some problems with the SCCP protocol inspection in checkpoint.

The rules allow SCCP from the VoIP domain to the CM VoiP-object and
viceversa, so everything is configured as Checkpoint recommends.

The problem is, when we try to call from one side of the firewall to the
other, the FW drops the SCCP packets with the following message: "Unknown
SCCP message type (0x144)"

I have the impression Checkpoint doesn't understand this version of SCCP,
has anybody else found something similar?

Thanks in advance,

Andreu