Forum Discussion
John_Krum
Cirrus
CirrusCan you stop RST from being sent by VIP
I work for a large regional public transportation company. We are in the beginning process of rolling out phones with a VoIP over the top application on them. This will eliminate the need for radios ...
John_KrumCirrus
CirrusI should have included the initial SYN. Phone sends the SYN, VIP responds back RST ACK.
- Kevin_Stewart
Employee
Okay, so then the VIP itself is sending a RST after the client's initial SYN (never completing the client side 3WHS).
You said the VIP is UDP:53, but the client is trying to connect over TCP:853. That'd explain the RST.
Proxying DNS over TLS Queries to Traditional DNS: https://clouddocs.f5.com/training/community/dns/html/class5/module2/module2.html
- John_Krum
O.K. I see where you are going with this. I was looking to stop the RST packets, just dropped. You are looking at it from the perspective of terminating TLS on the F5 and passing upd 53 to the pool.
- Kevin_Stewart
At the very least, you have a VIP with the correct IP, but wrong port. That's what is causing the RST response.
