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Tag Archives: VPN

VPN_Preempt
Thursday / Jan 11, 2018 /

Cisco ASA VPN failover & Preempt

Ziaul / ASA, Cisco, VPN /

In a situation where VPN failover feature on same encryption domain and preempt feature is needed, the following solution can be used. This is done using EEM script and supported from IOS 9.2+. Embedded Event Manager (EEM) feature enables debugging problems and provides general purpose logging for troubleshooting. The EEM responds to events in the […]

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IKE Phase1 Negitiation MSGs
Sunday / Feb 21, 2016 /

Troubleshooting IKEV1 (ISAKMP) – Phase 1 of Site-To-Site (L2L) VPNs

Ziaul / ASA, Cisco, VPN /

Troubleshooting a site-to-site VPN tunnels that is not working can be a difficult task, luckily most VPN appliances provide ample debugging information to diagnose the issue. When viewing this debugging information, a good set of steps can be taken to isolate the exact issue. Each functional VPN Tunnel consists of two tunnel processes, Phase 1 […]

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