PIX: Invalid transport field for protocol=17

[g.leonard]

The following message appeared in my PIX firewall log:

500004: Invalid transport field for protocol=17

I know protocol 17 is UDP but I don't understand the rest of the message.

Can anyone help?

[tvanginneken]

%PIX-4-500004: Invalid transport field for protocol=protocol, from src_addr/src_port to dest_addr/dest_port

Explanation This message appears when there is an invalid transport number, in which the source or destination port number for a protocol is zero. The protocol field is 6 for TCP and 17 for UDP.

Action If these messages persist, contact the peer's administrator.

Kind Regards,

Tom