====== PFSense - Suricata - Alerts - SURICATA UDPv4 invalid checksum ======

Disable Hardware Checksum Offloading under **System -> Advanced -> Networking**.

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===== Suppress =====

<code>
#SURICATA UDPv4 invalid checksum
suppress gen_id 1, sig_id 2200075
</code>

----

<WRAP info>
**NOTE:**  Try toggling the **Hardware Checksum Offloading**.

If that does not do it, you can simply disable this particular rule by either clicking the red X icon on the **Alerts** tab in the GID/SID column, or you can find and selectively disable that rule on the **Rules** tab for the interface.

See this thread from the official Suricata documentation Wiki for details:

  * http://suricata.readthedocs.io/en/latest/performance/packet-capture.html.

Suricata uses PCAP for packet capture during Legacy Blocking Mode operation, and Netmap for Inline IPS Mode operation.

In both cases, hardware checksum offloading needs to be disabled.
</WRAP>