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longnv's avatar
longnv
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Nov 22, 2022
Solved

F5 Bigip LTM NAT64 config

Hi everybody, I have a problem with VS using IPv6 and Pool, Node IPv4. My config : - VS type is Performance Layer 4;   - Source Address Translation: none - Address Translation: enable - Port Tr...
application delivery
  • longnv's avatar
    longnv
    Nov 23, 2022

    This problem has resolved. TCP conection from F5 to internal over 64k connection, so a new tcp session is started with the same ports  => tcp connection reset. Need SNAT with other self ip connection to internal.

mihaic's avatar
mihaic
Icon for MVP rankMVP
Nov 22, 2022

it seems the F5 sends you back a Reset every time you send a SYN.

Here is an article with possible reasons why an F5 sens Reset:

https://support.f5.com/csp/article/K9812

"You can associate the FastL4 profile with the following virtual types:

  • Performance (Layer 4)
  • Forwarding (Layer 2)
  • Forwarding (IP)
  • Internal"

So try changing the VIP from standard to performance (Layer4).

 

 

 

 

longnv's avatar
longnv
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Nov 22, 2022

As my talk on top, my 

My config :

- VS type is Performance Layer 4;  not type Stand