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Powershell: Test Network Connection

Windows Windows 11

(2026-03-05) > tnc www.google.ca -Port 443 ComputerName : www.google.ca RemoteAddress : ...

Updated 1 week ago by david

Powershell: Fetch Web Page

Windows Windows 11

(2026-03-05) > Invoke-WebRequest -UseBasicParsing -Uri "https://wiki.xdroop.com" StatusCode ...

Updated 1 week ago by david

Powershell: What is my ip?

Windows Windows 11

(2026-03-05) > Invoke-RestMethod -Uri https://ipinfo.io | Select-Object -ExpandProperty ip 172.10...

Updated 1 week ago by david

MAC forwarding table

FortiOS FortiSwitch

(2026-02-23) v7.6.2 di switch mac-address list Filtering: di switch mac-address filter vlan-map ...

Updated 3 weeks ago by david

Fortigate Can't Connect To Fortimanager

FortiOS v7.4.x

(2026-02-18) Problem: Fortigate shows as "down" in Fortimanager, but isn't. Most of the time said...

Updated 3 weeks ago by david

Markdown Cheatsheet

Applications

(2026-01-21) Markdown Cheatsheet

Updated 1 month ago by david

Open sniffer output in Wireshark

FortiOS v7.4.x

(2026-01-21) You need: wireshark fgt2eth.exe Take your capture using verbosity level 6: diagnos...

Updated 1 month ago by david

Packet Capture

FortiOS FortiSwitch

(2026-01-26) v7.2.10 Creating the capture profile config system sniffer-profile edit <profile...

Updated 2 months ago by david

Device-Local Certificate Expired

FortiOS v6.4.x

(2024-02-08) Problem The local, internally generated certificate that the Fortigate presents for ...

Updated 2 months ago by david

CLI Fetch Firewall Configurations

Applications Fortimanager

(2025-12-16) diag test deploymanager reloadconf <oid> You can get all the firewalls information ...

Updated 2 months ago by david

Packet Capture

FortiOS v5.0.x

(2013-07-18) Show information of packets seen on an interface: # diag sniffer packet internal non...

Updated 2 months ago by david

Using SNMP to trigger a configuration copy

Cisco NXOS 9.3(9)

(2025-11-27) MIB: https://mibs.observium.org/mib/CISCO-CONFIG-COPY-MIB/ (just in case I find the ...

Updated 3 months ago by david

Commands

Cisco FTD 9.19

VPN information show vpn-sessiondb l2l show crypto isakmp sa show crypto ipsec sa Diagnostics mo...

Updated 4 months ago by david

Port-Group

Dell OS10 v10.5

(2025-11-03) Physical ports are collected into groups called port-groups. All ports in a port-gro...

Updated 4 months ago by david

Troubleshoot IPsec VPN Tunnels, Packet size related

FortiOS v7.0.x

(2024-11-13) To confirm errors are increasing on IPsec VPN interface(s), periodically issue one o...

Updated 4 months ago by david

Netstat

Windows Windows 10

(2025-10-28) Show netstat counters -- including discards, which can be very interesting C:\Window...

Updated 4 months ago by david

TCP Global Parameters

Windows Windows 10

(2025-10-28) Show Windows TCP Parameters: C:\Windows\System32>netsh int tcp sho glo Querying acti...

Updated 4 months ago by david

Debug SSLVPN Authentication Issues

FortiOS v7.0.x

(20215-07-25) diagnose debug reset diagnose debug application sslvpn -1 diagnose debug applicatio...

Updated 4 months ago by david

iPerf3 on Fortigates

FortiOS v6.0.x

(2021-06-16) Limited iPerf3 on Fortigates # diag traffictest client-intf port1 <----- Defi...

Updated 5 months ago by david

Fortiguard Communication

FortiOS v7.4.x

(2025-09-04) Current authoritative vendor guide is here: https://community.fortinet.com/t5/FortiG...

Updated 6 months ago by david