Even when crossing the bleak Turanian desert, subtle signs point the way to the next caravanserai. #IPnetworking https://cromwell-intl.com/networking/routing.html?s=mc
How Routing Works

How IP routing works: IP routing logic, examples, diagrams, sanity checking, ingress and egress filtering, and putting it all together.

Bob's Pages of Travel, Linux, Cybersecurity, and More
RFC 6549 defining multi-instance extensions for the OSPF protocol was published in March 2012 https://cromwell-intl.com/networking/routing.html?s=mb #IPnetworking #OpenSource #Linux
How Routing Works

How IP routing works: IP routing logic, examples, diagrams, sanity checking, ingress and egress filtering, and putting it all together.

Bob's Pages of Travel, Linux, Cybersecurity, and More
RFC 8085 defining UDP protocol usage guidelines was published in March 2017 https://cromwell-intl.com/networking/protocols.html?s=mb #IPnetworking #OpenSource #Linux
Quick Overview of Protocol Headers

Simple overview of TCP/IP protocol headers: ARP/RARP, IP, ICMP, DNS, TCP, and UDP. Quick guide to what you see in Wireshark, tcpdump, and other protocol analyzers.

Bob's Pages of Travel, Linux, Cybersecurity, and More
RFC 1583 defining version 2 of the OSPF protocol was published in March 1994 https://cromwell-intl.com/networking/routing.html?s=mb #IPnetworking #OpenSource #Linux
How Routing Works

How IP routing works: IP routing logic, examples, diagrams, sanity checking, ingress and egress filtering, and putting it all together.

Bob's Pages of Travel, Linux, Cybersecurity, and More
RFC 1305 defining the NTP protocol version 3 was published in March 1992 https://cromwell-intl.com/networking/protocols.html?s=mb #IPnetworking #OpenSource #Linux
Quick Overview of Protocol Headers

Simple overview of TCP/IP protocol headers: ARP/RARP, IP, ICMP, DNS, TCP, and UDP. Quick guide to what you see in Wireshark, tcpdump, and other protocol analyzers.

Bob's Pages of Travel, Linux, Cybersecurity, and More
RFC 6549 defining multi-instance extensions for the OSPF protocol was published in March 2012 https://cromwell-intl.com/networking/routing.html?s=mb #IPnetworking #OpenSource #Linux
How Routing Works

How IP routing works: IP routing logic, examples, diagrams, sanity checking, ingress and egress filtering, and putting it all together.

Bob's Pages of Travel, Linux, Cybersecurity, and More
RFC 8085 defining UDP protocol usage guidelines was published in March 2017 https://cromwell-intl.com/networking/protocols.html?s=mb #IPnetworking #OpenSource #Linux
Quick Overview of Protocol Headers

Simple overview of TCP/IP protocol headers: ARP/RARP, IP, ICMP, DNS, TCP, and UDP. Quick guide to what you see in Wireshark, tcpdump, and other protocol analyzers.

Bob's Pages of Travel, Linux, Cybersecurity, and More
RFC 1583 defining version 2 of the OSPF protocol was published in March 1994 https://cromwell-intl.com/networking/routing.html?s=mb #IPnetworking #OpenSource #Linux
How Routing Works

How IP routing works: IP routing logic, examples, diagrams, sanity checking, ingress and egress filtering, and putting it all together.

Bob's Pages of Travel, Linux, Cybersecurity, and More
RFC 1305 defining the NTP protocol version 3 was published in March 1992 https://cromwell-intl.com/networking/protocols.html?s=mb #IPnetworking #OpenSource #Linux
Quick Overview of Protocol Headers

Simple overview of TCP/IP protocol headers: ARP/RARP, IP, ICMP, DNS, TCP, and UDP. Quick guide to what you see in Wireshark, tcpdump, and other protocol analyzers.

Bob's Pages of Travel, Linux, Cybersecurity, and More
RFC 7822 extending the NTP protocol version 4 was published in March 2016 https://cromwell-intl.com/networking/protocols.html?s=mb #IPnetworking #OpenSource #Linux
Quick Overview of Protocol Headers

Simple overview of TCP/IP protocol headers: ARP/RARP, IP, ICMP, DNS, TCP, and UDP. Quick guide to what you see in Wireshark, tcpdump, and other protocol analyzers.

Bob's Pages of Travel, Linux, Cybersecurity, and More