I setup a a router in GNS3 with the loopback adapter and cloud connected to it. Now i setup everything up from the guides I have followed and from my physical PC i can ping the loopback interface and ...

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 ...