Trying to find out if my Exchange server has been comprimsed... Since yesterday it's been sending ICMP packets out like crazy, actually filling my entire T1. Today it's sending to 65.80.164.255, which ...

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 ...

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 ...

When we began this series, we discussed the ICMP (Internet Control Message Protocol). This protocol is the basis for two widely used applications, ping and traceroute. In this lesson and the next, we ...

ping is a diagnostic tool used for verifying connectivity between two hosts on a network. It sends Internet Control Message Protocol (ICMP) echo request packets to a remote IP address and watches for ...

BlackNurse is the name of a recently discovered network attack that can crash firewalls and routers via ICMP packets, known by most of us as "pings." The attack came to light after TDC, a company that ...

What is the minimum size of an Ethernet frame that carries an IP packet which in turn carries an ICMP packet? What is the maximum size? The minimum size of an ...