Policy not catching correct traffic

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Policy not catching correct traffic

L1 Bithead

Hi all, first time poster so go easy!

 

We're running into an issue where a rule that is meant to catch ether-ip traffic on port 20033 is slipping through and being caught by a lower rule which allows any application and service. Rules as follows:

 

rules.pngrulebig.png

 

When running the "show session all filter rule X" command in cli, we can see that sessions are only established for the lower one, and not the higher one.

 

cli.png

 

 

I suppose I'm wondering if the rules have been configured incorrectly caused by me missing something, or if it's configured fine and this appears to be a bug.

 

Many thanks!

1 accepted solution

Accepted Solutions

L3 Networker

Hello @ChickenTenderer

 

IP Protocol number of etherip (97) is not as same as TCP. I think that is the reason why it is not hitting the above rule when you defined TCP ports there. Traffic which is having destination port 20033 and with IP protocol number 6 or 17 will only hit this rule. Can you change it to applicationd deafult and see if it is working?

 

Pic.PNG

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2 REPLIES 2

L3 Networker

Hello @ChickenTenderer

 

IP Protocol number of etherip (97) is not as same as TCP. I think that is the reason why it is not hitting the above rule when you defined TCP ports there. Traffic which is having destination port 20033 and with IP protocol number 6 or 17 will only hit this rule. Can you change it to applicationd deafult and see if it is working?

 

Pic.PNG

Hi @Rajesh12

 

Thanks for your reply - your recommendation worked like a charm!

Looks like I'll have to be aware of that in the future.

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