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    TCP urgent pointer stiped by IPSEC?

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    • A
      adelphi
      last edited by

      We have a pair of W&T RS485 COM servers in different branch offices that have to communicate via a pfsense IPSEC link.
      To initiate the connection, the sending server sends a TCP packet with "Urgent Pointer" set to 65535.

      If we do a package capture on the pfsense LAN interface of the sender side, we can successfully see the "urgent pointer "set, but if we capture at the pfsense IPSEC interface of the sender side, the pointer is no longer set.

      Threfore it seems that the pfsense stripes this pointer!? Is there an option to tell the pfsense to pass it?

      Both sides are using netgate appliance with latest pfsense version.

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