By default TCP and UDP checksum validation is disabled for packets that are decoded and displayed within CDRouter’s web UI:
Checksum validation may be useful for analysis in certain situations. To enable
checksum validation, edit the
file as the root user and add the following two lines to the bottom:
tcp.check_checksum: TRUE udp.check_checksum: TRUE
CDRouter must be restarted in order for these changes to take effect:
systemctl restart cdrouter
After making these changes the checksum field will be verified as either Bad or Good for all TCP and UDP packets that are decoded and displayed within CDRouter’s the web UI.
Note that this change must be applied after every CDRouter software update.