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.perltidyrc
(2025-08-31) -bl # braces on new lines -pt=2 # tight bracket spacing -bt=2 # tight bracket spacing -sbt=2 # tight bracket spacing -noll # don't outdent long lines -l=0 # no limit on line length -nbbc # no blanks before comments -nbbb # no blanks befo...
.screenrc
(2025-08-31) # Status line hardstatus alwayslastline #hardstatus string '%H %{= mK}%-Lw%{= KW}%50>%n%f* %t%{= mK}%+Lw%< %{= kG}%-=%D %d %M %Y %c:%s%{-}' hardstatus string '%H %{= kG}%c:%s%{-}%{= KW}%50> %n:%t' # scrollback depth defscrollback 10000 # detach on...
.vimrc
(2025-08-31) " Dave's .vimrc " History: " 020522 - updated with comments " 091001 - added status line " " our shell for running things set shell=/bin/bash " set the visual bell to nothing to silence the beeping set vb t_vb= " this usually saves more troub...
davem.sh
(2025-08-31) # # /etc/profile.d/davem.sh # # Bash Customizations I like because I'm picky # from dave@xdroop.com # # I do it this way because when I'm working with a system I tend to end up # either using 'root' or some service account and I want my custo...
Fortiguard Communication
(2025-09-04) Current authoritative vendor guide is here: https://community.fortinet.com/t5/FortiGate/Troubleshooting-Tip-Unable-to-connect-to-FortiGuard-servers/ta-p/226149 Test DNS lookup and basic connectivity: execute ping service.fortiguard.net execute pin...
TCP Global Parameters
(2025-10-28) Show Windows TCP Parameters: C:\Windows\System32>netsh int tcp sho glo Querying active state... TCP Global Parameters ---------------------------------------------- Receive-Side Scaling State : enabled Receive Window Auto-Tuning Level ...
Netstat
(2025-10-28) Show netstat counters -- including discards, which can be very interesting C:\Windows\System32>netstat -e Interface Statistics Received Sent Bytes 3991197869 3681541088 Unicast packet...
Commands
VPN information show vpn-sessiondb l2l show crypto isakmp sa show crypto ipsec sa Diagnostics mode -- ie ASA cli system support diagnostic-cli Cpature traffic capture MYCAP interface outside match ip host 1.2.3.4 host 5.6.7.8 show capture MYCAP capture MYCAP...
Port-Group
(2025-11-03) Physical ports are collected into groups called port-groups. All ports in a port-group operate at the same speed. In the example below, note that port-groups 1/1/7 through 1/1/10 only have a single port in their group. # show port-group SwitchC-Mg...
Using SNMP to trigger a configuration copy
(2025-11-27) MIB: https://mibs.observium.org/mib/CISCO-CONFIG-COPY-MIB/ (just in case I find the copious spare time to figure out how this works)
CLI Fetch Firewall Configurations
(2025-12-16) diag test deploymanager reloadconf <oid> You can get all the firewalls information in a fortimanager like this: diag dvm device list ...this will include the device oid.
Packet Capture
(2026-01-26) v7.2.10 Creating the capture profile config system sniffer-profile edit <profile_name> set filter {<string> | none} set max-pkt-count <1-maximum> set max-pkt-len <64-1534> set switch-interface <switch_interface_...
Open sniffer output in Wireshark
(2026-01-21) You need: wireshark fgt2eth.exe Take your capture using verbosity level 6: diagnose sniff packet any ‘host 8.8.8.8 and icmp’ 6 0 Download the screen buffer of the raw capture, then run it through fgt2eth.exe: > fgt2eth.exe -in screencap -out ca...
Markdown Cheatsheet
(2026-01-21) Markdown Cheatsheet
Fortigate Can't Connect To Fortimanager
(2026-02-18) Problem: Fortigate shows as "down" in Fortimanager, but isn't. Most of the time said Fortigate is behind some kind of NAT'ing firewall itself. Solution: This magic chicken waving worked for me. diagnose debug reset diagnose debug application fgfm...
MAC forwarding table
(2026-02-23) v7.6.2 di switch mac-address list Filtering: di switch mac-address filter vlan-map 55 di switch mac-address filter show di switch mac-address list Output can be grep'd.
Powershell: What is my ip?
(2026-03-05) > Invoke-RestMethod -Uri https://ipinfo.io | Select-Object -ExpandProperty ip 172.105.30.24
Powershell: Fetch Web Page
(2026-03-05) > Invoke-WebRequest -UseBasicParsing -Uri "https://wiki.xdroop.com" StatusCode : 200 StatusDescription : OK Content : <!DOCTYPE html> <html lang="en-GB" dir="ltr" ...
Powershell: Test Network Connection
(2026-03-05) > tnc www.google.ca -Port 443 ComputerName : www.google.ca RemoteAddress : 142.250.69.99 RemotePort : 443 InterfaceAlias : P81_e_WG_DQZNLseeB1 SourceAddress : 10.127.12.45 TcpTestSucceeded : True
Basic SD-WAN for 7.4.x
(2026-04-08) What This Is About (This is a refinement of my previous sdwan writings.) In the course of my day-to-day duties I've been seeing a lot of sdwan configs that are misbehaving, causing users to believe that their internet links are worse than they act...