IPv4 Header Error Checksum Calculator

The following fields are fixed

  • Type = 4
  • Header length = 5  32-bit words
  • No options
Type of service (in decimal)
Total Length
Identifier
Don't Fragment (check if set)
More Fragments
Fragment Offset (byte offset / 8)
TTL
Protocol
Source (xxx.xxx.xxx.xxx)
Destination

HEC

Working

copied from: http://mna.nlanr.net/Software/HEC/hec.html