make sure that the destination is routed across the interface that you want it to encrypt on.Tunnel management, Phase1 Phase2 encrypt settings.most people disable NAT in the community.be aware that this will effect the Phase 2 negotiations.make sure there are rules to allow the traffic.Reply rule is only required for 2 way tunnel.looking for overlap, or missing networks.using topology is recommended, but you must define.vSet maximum concurrent IKE connectionsīASIC STUFF TO CHECK IN THE CONFIGURATION:.FW-1 is handling more than 200 key negotiations at once.sk32721 – CRL has expired, and module can’t get a new valid CRL.sk15037 – make sure gateway can communicate with management.sk18805 – multiple issues, define a static nat, add a rule, check time.sk17106 – Remote side peer object is incorrectly configured.As seen in ike debugs, make sure they match on both ends.sk25893 – Gateway: VPN-> VPN Advanced, Clear “Support key exhcnage for subnets”, Install policy.may have overlapping encryption domains.sk22102 – rules refer to an object that is not part of the local firewalls encryption domain.
make sure that encryption and hash match as well in Phase 2 settingsĬannot Identify Peer (to encryption connection).sk19243 – usually cuased when a peer does not agree to VPN Domain or subnet mask.Make sure firewall external interface is in public IP in general properties.Support Key exchange for subnets is properly configured.sk19243 – (LAST OPTION) use debedit objects_5_0.c, then add subnets/hosts in f.both ends need the same definition for the encrytpion domain.somethign is blocking communication between VPN endpoints.remote firewall not setup for encryption.sk21636 – cisco side not configured for compression.Make sure VPN domains under gateway B are all local to gateway B.Make sure VPN domains under gateway A are all local to gateway A.The networks are not defined properly or have a typo.According to the Policy the Packet should not have been decrypted
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