Previous articles (Part one, Part two) in this series on implementing VPN gateways using Cisco routers discussed the IPsec protocol and basic IPsec VPN connection models. Now we'll learn how to ...

So I'm helping a guy setup a VPN between his ASA5505 and a Cisco 2801 ISR (probably running 12.3 or 12.4 code, not sure, don't have access to it). The 2801 is run by another company but they provided ...

I have surfaced again after a busy few weeks – and I can finally continue my description of IPsec VPN troubleshooting (sorry about the delay). This time I’ll take a closer look at IKE Phase 1 (main ...

For smaller networks on which keys can be manually defined, IKE preshared keys (PSKs) can be used. PSKs are manually defined in the IKE policy of each crypto endpoint. Once crypto and ISAKMP policies ...