This blog post is a list of common troubleshooting commands I am using on the FortiGate CLI.It is not complete nor very detailled, but provides the basic commands for troubleshooting network related issues that are not resolvable via the GUI.

Jul 23, 2016 · Show list of IPSEC VPN tunnels: get vpn ipsec tunnel summary. Show details for IPSEC VPN tunnel: get vpn ipsec tunnel detail. Debug IKE: diag debug application ike 63 diagnose vpn ike log-filter clear diagnose vpn ike log-filter dst-addr diagnose debug app ike 255 diagnose debug enable Look for: SNMP tunnel UP / Down traps; Own and May 28, 2019 · Configure SSL VPN Tunnel; VPN -> SSL VPN Setting; To avoid conflicts, switch Listen on Port to 10443; In Restrict Access: Select Allow access from any host; In the Authentication/Portal Mapping section: Add SSL VPN user group and map it to the full-access portal Jul 17, 2020 · You can find bits and pieces about doing a single IP subnet over VPN, or (one) VLAN in VXLAN without VPN and no explanation of how to add more, but nothing at all about multiple VLANs in VXLAN across VPN. Scenario #1 – VLAN trunk to FortiGate then VXLAN-over-VPN. The following was performed using FortiOS 6.2.4 between a 100E and 60E. Ping sweeps starting at a low to high packet size, can also some shed light to a vpn-tunnel mtu issues. A review of the diag commands that are useful for all firewall engineers using a Fortigate security appliance; diag debug enable diag packet sniffer diag debug app ike diag vpn tunnel list Aug 15, 2014 · We can do this using the CLI command in the Fortigate: Dia system session clear. So how did we figure this out? If you do a packet capture on the Fortigate matching the ZD or AP ip addresses, you will see registration attempts trying to go through the WAN interface, even though the VPN is up.

Apr 20, 2020 · This document can be used to verify the status of an IPSEC tunnel, validate tunnel monitoring, clear the tunnel, and restore the tunnel. Details 1. Initiate VPN ike phase1 and phase2 SA manually. The VPN tunnel is negotiated only when there is interesting traffic destined to the tunnel.(On-demand)

Virtual Private Networking (“VPN”) is a cost effective and secure method for site to site connectivity without the use of client software. Fortinet Fortigate UTM appliances provide IPSec (as well as SSL VPN) “out of the box”. Specifically, IPSec Tunnels can be triggered via firewall rules based policies or interface mode. diagnose vpn ike filter clear diag vpn ike log-filter dst-addr4 x.x.x.x diag debug application ike -1 diag debug enable where x.x.x.x is the public IP of the remote site. Once the commands are executed, try to bring the tunnel UP from the GUI (VPN > IPsec Monitor > Bring UP or with the command : ‘diagnose vpn tunnel up “vpn_tunnel_name” Sometimes there were some issues with IPSec VPN tunnels on fortigate. Here some commands to clear the SA Sessions. List the Tunnel VPN: diagnose vpn tunnel list | grep name. Choose the name that you want to reset. diag vpn tunnel flush *Tunnel_NAME* diag vpn tunnel reset *Tunnel_NAME* If this not works clear the sessions on firewall: Create a Outgoing Interface Name of your VPN interface. Destination Address all. Schedule Always. Service all. Action Accept. Enable NAT. Use Dynamic IP Pool and Create a pool (you can put the IP LAN of your fortigate assuming that is your internal IP). You will be now able to access to your VPN IPSEC through

Remove any Phase 1 or Phase 2 configurations that are not in use. If a duplicate instance of the VPN tunnel appears on the IPsec Monitor, reboot your FortiGate unit to try and clear the entry. If you are still unable to connect to the VPN tunnel, run the following diagnostic command in the CLI:

Oct 29, 2009 · Re: Clear VPN Tunnel phase1/phase2 If its an ASA, you can also teardown specific tunnels using their index numbers. To get the index number do "show vpn-sessiondb <(l2l,remote,svc,webvpn)>" command May 20, 2018 · In this post we will see how to configure an IPSEC VPN tunnel between two remote locations through Fortigate firewalls. The scenario that we will use as example is the following: The objective will be to create a IPSEC VPN tunnel that communicates securely both offices ( and Flush Tunnel To flush a tunnel use the following command: # diag vpn tunnel flush It is very important to specify the phase1 name, if you forget to specify this the Fortigate will flush ALL tunnels. Reset Tunnel You can also reset a tunnel, in this case the Fortigate will completely re-negotiate the IPSec VPN. I have had a IPSEC connection setup between two firewalls. Now I want to remove the tunnel in my firewall, a "Fortigate 60". There are two phases, "Phase 1" and "Phase 2" for each IPSEC connection. I can delete the "Phase 2" entry by clicking the trashcan icon (in the web interface), but there is not such icon for "Phase 1". Nov 25, 2016 · Debug and troubleshoot an IPSEC VPN tunnel on a FortiGate The logging on a FortiGate firewall is very scarse, making it difficult to troubleshoot issues. This can especially be a problem when setting up a site-to-site IPSEC VPN tunnel.