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DCE-RPC not working

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Hello

 

I'm confused wether this is an SRX issue or microsoft issue ..

We have three networks :

2xLAN: 172.19.224/226

SQL: 172.21.25.10

 

Between the first two LANs and the SQL is two SRX devices , configured with allow any policies "temporary" just to debug the issue .

The thing is that RPC is not working fine and sending error message

If I take SQL server resist on the same LAN "172.19.x.x" it is working just fine .

RPC is not working between LAN 172.19.226.0/24" and SQL 172.21.25.10 . But it is working fine from 172.19.224.0/24 to SQL 172.21.25.10.

I've also followed KB23730 , but still ,problem is exist .

 

I've captured the flow on PCs from both LANs and this is the only difference:

 

Capture-lan.PNG

not sure what is IRemUnknown or IOXIDResolv ....


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