IT Hints

By Buddy Hihn


Trouble shooting tips
ICMP Message Likely Issue
  1. Redirect for Network = Default gateway incorrectly configured
  2. Redirect for Host = Subnet mask incorrectly configured
  3. Port Unreachable = Application port not started or responding
  4. Host Unreachable = Have route but box not answering ARP request
  5. Protocol Unreachable = ARP request answered but box not answering specific protocol request
  6. Network Unreachable = Router does not have route to reach network
  7. Configure filters to look for fragmentation fields in the header with More Fragments or Don't Fragment bits set








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