Recently Updated Pages
Same-interface Hairpin
(2017-05-31) Problem I have a server on my dmz at 192.168.1.10, with a public IP of 1.1.1.1. I ne...
Port Forward
(2017-02-28) Problem I have firewall with public IP 1.2.3.4. I need to expose ssh the private ser...
DHCP Reservations
(2021-02-25) DHCP Reservations This feature is now supported on ASA in version 9.13(1) and later ...
ASDM on Windows 10
(2015-10-01) Problem ASDM 7.1(3) on Windows 10. Solution Install 32-bit and 64-bit Java-JRE. I i...
Can't Run ASDM On New ASA
(2013-07-05) Problem Brand-new out-of-box ASA (5512 in my case) won't permit the ASDM to run. Err...
Site to Site VPN
(2013-05-08) Sorry, no detailed notes (too busy right now) but this seems to work. If you read my...
Site to Site VPN
(2013 March 08) Example VPN Configuration ! Enable ISAKMP crypto isakmp enable outside ! ! Object...
ssh_exchange_identification
(2015-06-05) Seems like a terribly late date to still be messing around with clunkers like these,...
Site to Site VPN with NAT
Problem Setting up a site-to-site VPN using your shiny ASA running 8.2. Your peer has a bunch of ...
Site to Site VPN
(2013-11-12) Problem Site to site VPN with an ASA running 8.2. Solution The local network is 192....
Changing A Remote Gateway IP
(2013-12-05) Problem You have an ASA running 8.2(something). You have a l2l VPN with a remote pee...
Password Reset
Bypass cisco system configuration Plug in your serial console, reboot the ASA press 'ESC' when it...
Mailguard
Problem Can't send or receive some messages through a Cisco ASA firewall. Solution Turn off Mailg...
Faking a secondary IP
(2013-04-30) Problem ASA won't let you define a secondary IP on an interface. Solution Fake it wi...
Debug Site to Site VPN
(2013 March 8) Useful commands for a v9.x VPN debug Phase 1: you want to see MM_ACTIVE in the St...
Creating Custom Kernel RPMs
(Note: may not be relevant to CentOS-4, I stuck this here because the dates (2008) kinda lined up...
Installing From The Vault
(2022-02-01) Problem # sudo dnf (operation) Error: Failed to download metadata for repo 'appstrea...
Find Transparent Proxy Systems
(2021-02-17) Problem A system between me and my destination is doing proxying for the destination...
failed to load driver: swrast
(2021-08-17) Problem: Some variety of libGL error: MESA-LOADER: failed to open swrast: /usr/lib64...
docker
(2020-05-03) Docker on CentOS 8 # dnf config-manager --add-repo=https://download.docker.com/linux...