Netgate Discussion Forum
    • Categories
    • Recent
    • Tags
    • Popular
    • Users
    • Search
    • Register
    • Login

    Ipsec Ip Checksum Offload Error.

    Scheduled Pinned Locked Moved IPsec
    2 Posts 2 Posters 4.0k Views
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • E
      ercangunes
      last edited by

      Hi guys,

      I have configured multi site , site-to-site ipsec vpn between our head office with Bracnhes offices. When I get some packet capture on the wan interface off the pfsense ı have noticed that there are many Header checksum error on the traffic.

      Due the this errors, the traffic between tunnels is so slow it effect all traffic especially RDP or file sharing traffic. I have capture some errors on the Terminal Servers ,

      Header Checksum : 0xcf5 [incorrect, shoul be 0xc3f5 (maybe,  casued by "Ip checksum offload "?]

      I also disable checksum offload and reboot the gateway on the head office.

      How can I resolve this issue on the pfsense.

      Best Regards,
      Ercan GUNES

      1 Reply Last reply Reply Quote 0
      • jimpJ
        jimp Rebel Alliance Developer Netgate
        last edited by

        Not nearly enough information there.

        Is this 1.2.3 or 2.0? Is this i386 or amd64? What kind of hardware is it? (ifconfig -a would help)

        Remember: Upvote with the 👍 button for any user/post you find to be helpful, informative, or deserving of recognition!

        Need help fast? Netgate Global Support!

        Do not Chat/PM for help!

        1 Reply Last reply Reply Quote 0
        • First post
          Last post
        Copyright 2025 Rubicon Communications LLC (Netgate). All rights reserved.