Training

Router Bugs - IKE NAT Traversal

2 min read

QA Cafe is constantly testing as many home networking devices as we can find, both to make sure CDRouter is the best testing product around and to find new and interesting tests to write. During that time, we have learned that the quality level of home and business routers/gateways on the market varies considerably. We know the world of networking protocols is complex and nuanced, and often a slight oversight in a standard or interpretation of a standard can mean the difference between a functioning home networking product and a high-tech paperweight. Keep reading

Training

IPSEC pass through testing

2 min read

IPSEC pass through is a technique for allowing IPSEC packets to pass through a NAT router. By itself, IPSEC does not work when it travels through NAT. Newer IKE and IPSEC implementations support NAT-Traversal which is a technique to detect NAT and switch to UDP encapsultion for IPSEC ESP packets. However, many router vendors have developed a “pass through” technique that allows IPSEC packets to pass through NAT without NAT-T support. Keep reading