Do I have to install the duo software on EVERY server that is a member in the domain? I was hoping I could install Duo on only the Domain Controller & have Duo enforced via Admin OU group policy for domain admin group members for local server login &...

Test AVPN S2S network ... This should NOT be this hard... straight-up simple VPN setup.  NO_PROPOSAL_CHOSEN error is like a BS general error bucket non-informative log error... WTH !!!!  The trail and Error troubleshooting is insane - little diagnost...

Cannot ping between two vlans on CBS250-8T-E-2G with IPv4 Routing Enable from a laptop connect to a trunk port...I can ping between the Vlans & ping out via the static route to the uplink ISP only via the CBS220 switch portal ping... Ipv4 Interface I...