Networking

As you might know from the first article of this series, there are many mechanisms that can be used for NAT bypass. In this part, we will focus on the second UPnP method – Internet Gateway Device (IGD) Protocol and consider some common security concerns for UPnP protocols. Use-case: R1 supports UPnP IGD protocol and … Read more

Being in 2021 does not mean using IPv6 in LAN, WAN, or for Internet reachability. We are still in the IPv4 world for 90% of use-cases and desperately looking for available public IPv4 addresses. We have to use NAT mechanisms to preserve IPv4 addresses and somehow manage a huge misbalance between the number of IP … Read more