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New Member

Using tcp port 0?

12 years as a firewall guy... and this is a first for me.

I have a request to allow firewall access to an app that apparently uses tcp port 0.  I thought it didn't exist... but good-ol' google proved that wrong.  I did find this comment:  " Port 0 is officially a reserved port in TCP/IP networking, meaning that it should not be used for any TCP or UDP network communications. "

Just out of curiosity, anyone implemented an acl using port 0 before?  Any issues on the ASA side?

Thanks,

Mike

1 REPLY
New Member

Using tcp port 0?

Whoops... thought I was in the firewall forum.  Sorry about that.

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