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2. ping (networking utility) - Wikipedia

   en.wikipedia.org/wiki/Ping_(networking_utility)

   Ping operates by means of Internet Control Message Protocol (ICMP) packets. Pinging involves sending an ICMP echo request to the target host and waiting for an ICMP echo reply. The program reports errors, packet loss , and a statistical summary of the results, typically including the minimum, maximum, the mean round-trip times, and standard ...

3. Stateful firewall - Wikipedia

   en.wikipedia.org/wiki/Stateful_firewall

   UDP hole punching is a technology that leverages this trait to allow for dynamically setting up data tunnels over the internet. [6] ICMP messages are distinct from TCP and UDP and communicate control information of the network itself. A well-known example of this is the ping utility. [7] ICMP responses will be allowed back through the firewall.

4. Ping of death - Wikipedia

   en.wikipedia.org/wiki/Ping_of_death

   A ping of death is a type of attack on a computer system that involves sending a malformed or otherwise malicious ping to a computer. [1] In this attack, a host sends hundreds of ping requests with a packet size that is large or illegal to another host to try to take it offline or to keep it preoccupied responding with ICMP Echo replies.

5. List of IP protocol numbers - Wikipedia

   en.wikipedia.org/wiki/List_of_IP_protocol_numbers

   Internet Control Message Protocol: RFC 792: 0x02 2 IGMP Internet Group Management Protocol: RFC 1112: 0x03 3 GGP Gateway-to-Gateway Protocol: RFC 823: 0x04 4 IP-in-IP IP in IP (encapsulation) RFC 2003: 0x05 5 ST Internet Stream Protocol: RFC 1190, RFC 1819: 0x06 6 TCP Transmission Control Protocol: RFC 793: 0x07 7 CBT Core-based trees: RFC 2189 ...

6. A complete guide to internet security - AOL

   www.aol.com/lifestyle/a-complete-guide-to...

   Internet security is a must for protecting sensitive information from cyberattacks, including personal data, financial records, and confidential communications. By implementing effective security ...

7. Internet security - Wikipedia

   en.wikipedia.org/wiki/Internet_security

   Internet security is a branch of computer security. It encompasses the Internet, browser security, web site security, [1] and network security as it applies to other applications or operating systems as a whole. Its objective is to establish rules and measures to use against attacks over the Internet. [2]