Debugging the packet flow requires a number of debug commands to be entered as each one configures part of the debug action, with the final command starting the debug. Improving FortiGate performance with flow-based UTM scanning. The following commands will send 100 packets of output to the console of the packet flow including the IP address. #diag debug flow trace stop. To disable the debug when you are finish run the following command: #diag debug disable. diagnose debug enable — enable output on remote console. You can also use these commands to delete the packet flow debug log filter, so that all packet flow debug logs are generated. diag debug flow trace stop diag debug flow filter clear #These commands allow certain debugging within the Fortigate, ex. As packets are received, you can view debug messages to show how the FortiGate unit processes them. Show packet flow through the FortiGate unit. The options to configure policy-based IPsec VPN are unavailable. Diag debug info. Debug: In order to diagnose potential issues, run the following debug commands on FGT_1 using the CLI Console: diag debug reset diag debug flow show function-name enable diag debug flow show iprope enable diag debug flow filter addr 192.168.177.99 diag debug flow filter proto 1 diag debug flow trace start 2 diag debug enable 7. Debugging can only be performed using CLI commands. Copy the following to a text file and edit as required as an easy way to dump the command on the FortiGate device. You need to add: Troubleshooting Tip : First steps to troubleshoot connectivity problems to or through a FortiGate with sniffer, debug flow, session list, routing table Troubleshooting Tip: Using the FortiGate sniffer on VLAN interfaces Technical Note : How To Troubleshoot Wireless Station Connection Issues on the FortiAP Technical Note: Packet capture buffer limit It usually can be found on the Dashboard (> Status). Finding the FortiGuard web filter category of a URL . "In addition the following options have been removed from the diagnose command list:" diag debug flow show console diag debug flow show console enable diag debug flow show console disable. diagnose sniffer command can be used from cli. Fortigate_Troubleshoot_Connection ***** General Commands ... #diag debug flow trace start 100 (to get 100 lines) 3.5.

#diag debug flow show console enable. This is done by the following series of commands. This makes the remote FortiGate the initiator and the local FortiGate becomes the responder. Diag debug reset. Options. For example, change the policy ID 5 to a DENY, enter the debug flow commands and then ping from 10.10.20.30 to 172.20.120.2 through the FortiGate unit. The command syntax: diagnose sniffer packet {interface | all} ‘net z.z.z.z/p and/or host x.x.x.x and/or port yyy’ [options] Each line of output begins with the name of … diag debug flow show iprope enable diag debug flow show function-name enable diag debug console timestamp enable diag debug enable diag debug flow trace start 1000. At that point, we execute a debug flow in order to understand what steps are the traffic flow following through our Fortigate: Debug flow settings: #diag debug reset. Change a policy that accepts traffic to one that denies traffic and use the diagnose debug flow commands to view the results. Diag debug flow. Overriding FortiGuard web filtering for selected users. As packets are received you can view debug messages to show how the FortiGate unit processes them. diagnose debug flow. As it says, click on the console to activate it.

#diag debug flow filter saddr 172.17.5.221. It is then difficult to determine/find the issue. Bear in mind that the troubleshooting suggestions below are not exhaustive, and may not reflect your network topology. You can use the diag debug flow command to show packet flow through the FortiGate unit. Listing the web sites your users have visited. #diag debug flow filter proto 1 (protocol 1 is for icmp) 4. The output lines show a ping packet being received, a session allocated, a route found and then the packet being denied. #diag debug flow filter clear. These can be cleared by typing “diag debug flow filter clear” Copy and Paste Command. #diag debug flow filter daddr 172.17.8.254. CLI Commands for Troubleshooting FortiGate Firewalls 2015-12-21 Fortinet , Memorandum Cheat Sheet , CLI , FortiGate , Fortinet , Quick Reference , SCP , Troubleshooting Johannes Weber This blog post is a list of common troubleshooting commands I am using on the FortiGate CLI . Prevent offensive search results in Google, Bing and Yahoo search engines. #diag debug reset. 'Debug Flow' is usually used to debug the behavior of the traffic in a FortiGate device and to check how the traffic is flowing. Type “diag debug flow filter” to see what filters are currently set. Diag debug disable. If you have determined that network traffic is not entering and leaving the FortiGate unit as expected, debug the packet flow. But doesn't say what to use as a replacement, the sidebar even links to a page for Debug Flow output, but get the same errors as above. If your FortiGate unit has NP interfaces that are offloading traffic, this will change the packet flow. diagnose debug app ike 255 diagnose debug enable; Have the remote FortiGate initiate the VPN connection in the web-based manager by going to VPN > IPsec Tunnels and selecting Bring up.