Hi everyone.<BR><BR>Recently, my firewall was caught with a bug that cause it to blacklist itself: when it encountered a packet with the "No not fragment" flag set too big to fit on the next hop, it ...

A: A high level of ICMP packets between your Active Directory controllers and Exchange server is not a normal situation from the networks that I have looked at. You have checked for viruses and that ...

I think I could get to Google, when I checked it.. But I got this result from pathping. No doubt there's no problem, or rather, if there is it's nothing at my end, and I can get to Google so no big ...

Recently, I noticed that there has been a surge in ICMP packets between some of my Active Directory controllers and Exchange servers. Virus scanning proved that the servers were clean. Is there any ...

While ICMP is required for IP network traffic redirection and pinging hosts on your LAN or WAN, ICMP can also pose a security concern. David Davis tells you about the basics of ICMP and how to filter ...

The earliest stored program computer in the modern sense was not one of the names such as ENIAC or Colossus that you might expect, but the Manchester Baby, an experimental prototype computer built at ...

The current IP address scheme of 32-bit words is fast becoming inadequate. It would appear that 2 32 = 4 294 967 296 combinations of addresses should be enough for everybody, but in practice this is ...

Today, researchers have disclosed their findings on a novel Windows malware sample that uses Internet Control Message Protocol (ICMP) for its command-and-control (C2) activities. Dubbed "Pingback," ...