How to troubleshoot L2L and remote access VPN traffic?
Verify that Transform-Set is Correct Verify Crypto Map Sequence Numbers and Name Verify the Peer IP Address is Correct Verify the Tunnel Group and Group Names Disable XAUTH for L2L Peers VPN Pool Getting Exhausted Issues with latency for VPN client traffic
How to configure site to site IPsec IKEv1 VPN tunnel?
Go to the NETWORK > IP Configuration page and ensure that Services to Allow: Ping is enabled for the management IP address of the remote firewall. If network traffic is not passing the VPN tunnel, go to the BASIC > Recent Connections page and ensure that network traffic is not blocked by any other access rule.
How to allow VPN traffic to location 1?
You will need to add an access rule to allow VPN traffic. B ecause the WAN IP address of Location 1 is chosen dynamically via DHCP, the remote gateway on Location 2 must use 0.0.0.0/0 so that any incoming IP address is accepted.
How to check the status of a VPN tunnel?
To verify that the VPN tunnel was initiated successfully and traffic is flowing, go to the VPN > Site-to-Site VPN page. Verify that green check marks are displayed in the Status column of the VPN tunnel. Use ping to verify that network traffic is passing the VPN tunnel.
What causes an IPsec SA proposal to be found unacceptable?
All IPSec SA Proposals Found Unacceptable. This error message occurs when the Phase 2 IPSec parameters are mismatched between the local and remote sites. In order to resolve this issue, specify the same parameters in the transform set so that they match and successful VPN establishes. Packet Encryption/Decryption Error
Why does IPsec say invalid local address 12.2.6?
IPSEC (validate_proposal): invalid local address 12.2.6.2 ISAKMP (0:3): atts not acceptable. Next payload is 0 ISAKMP (0:3): SA not acceptable! This error message is attributed to one of these two common problems:
Which is IPsec tunnel is built between peers?
show crypto ipsec sa This command shows IPsec SAs built between peers. The encrypted tunnel is built between 12.1.1.1 and 12.1.1.2 for traffic that goes between networks 20.1.1.0 and 10.1.1.0. You can see the two Encapsulating Security Payload (ESP) SAs built inbound and outbound.