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VPN Fragmentation

FortiOS v5.2.x

(2017-04-12) Problem VPN throughput is slow and you suspect fragmentation. Solution You can influ...

Updated 3 months ago by david

VPN Tunnel Details

FortiOS v5.2.x

(2015-10-19) Problem I want details about a VPN tunnel. Solution # diag vpn tunnel list list all ...

Updated 3 months ago by david

CLI Disk Scan FSCK

FortiOS v5.4.x

(2018-08-22) Problem It is a good idea to run a disk check before doing a firmware upgrade, espec...

Updated 3 months ago by david

CLI Upgrade Firmware

FortiOS v5.4.x

Problem Upgrading firmwares via the web UI is tedious, especially when you have 50 or 60+ of thes...

Updated 3 months ago by david

Connecting Multiple vDOMs to the same VLAN

FortiOS v5.4.x

(2018-02-26) Problem I have more vDOMs to connect to a VLAN than I have physical interfaces. (The...

Updated 3 months ago by david

CPU is pinned

FortiOS v5.4.x

(2018-06-11) Problem CPU on Fortigate is maxed out for a long period of time (hours, days). Solut...

Updated 3 months ago by david

Debug Flow

FortiOS v5.4.x

(2018-01-30) Debugging Flow Example: diag debug enable diag debug flow filter addr 203.160.224.97...

Updated 3 months ago by david

Debug Session

FortiOS v5.4.x

(2018-01-30) Session operations di sys session list Set a filter: di sys session filter di sys s...

Updated 3 months ago by david

Debug Sniffer

FortiOS v5.4.x

(2017-11-23) Problem Want to sniff traffic flow. Solution # diag sniffer packet <interface> <'fil...

Updated 3 months ago by david

Factory Reset

FortiOS v5.4.x

(2018-03-01) Problem The reset to factory settings using the GUI is not available in v5.4. Soluti...

Updated 3 months ago by david

Fixing HA Sync Problems

FortiOS v5.4.x

(2017-11-13) Problem: fgt300d-b (global) # get system ha status HA Health Status: OK Model: Forti...

Updated 3 months ago by david

List DHCP Client Leases

FortiOS v5.4.x

(2018-08-15) Problem Find the current list of DHCP clients for a Fortigate DHCP server. Solution ...

Updated 3 months ago by david

List SSLVPN Users

FortiOS v5.4.x

(2018-06-11) Problem List connected SSLVPN users. Solution exec vpn sslvpn list

Updated 3 months ago by david

RTC Power Status Failed

FortiOS v5.4.x

(2018-12-03) Problem Firewall doesn't boot. When you hook a console up to it, it says: Error: RTC...

Updated 3 months ago by david

SSLVPN Logs Out After 8 Hours

FortiOS v5.4.x

(2018-01-26) Problem SSLVPN disconnects after 8 hours. Solution config vpn ssl settings set auth-...

Updated 3 months ago by david

System Time

FortiOS v5.4.x

(2018-12-03) Problem Show system time on a FortiGate. Solution # exec time current time is: 19:0...

Updated 3 months ago by david

VPN Flapping Leads To Bogus Routing

FortiOS v5.4.x

(2018-01-30) Problem Two computers, A and B, trying to connect across a site-to-site VPN to compu...

Updated 3 months ago by david

Wifi Clients Connect But Can't Get DHCP Lease

FortiOS v5.4.x

(2019-04-17) Problem Wifi clients connect but can't get DHCP lease from either the Fortigate or f...

Updated 3 months ago by david

BGP Neighbors

FortiOS v5.6.x

(2020-06-18) BGP Neighbor status? # get router info bgp neighbors … # get router info bgp neighbo...

Updated 3 months ago by david

BGP Sessions

FortiOS v5.6.x

(2020-06-24) Problem Soft-bounce bgp sessions. This should cause peers to hold on to the routes w...

Updated 3 months ago by david