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Port Forward
Problem Port-forward firewall outside, port 5000 to inside IP 192.168.1.100, port 8080. Solution ...
Port Span
Session Monitoring This is the vocabulary that Cisco uses to describe port mirroring, port monito...
Console Commands
(2017-04-26) Some Console Commands # show run | in <string> # more run | begin <string> useful e...
Use User's Password As Enable Password
(2020-12-17) Problem I want to use my username password as the enable password in ssh sessions So...
TLS DH Group Key Length
(2020-01-20) Problem Something like SSL/TLS: Diffie-Hellman Key Exchange Insufficient DH Group St...
Test Authentication Server
(2020-03-18) Problem Is my Radius (or LDAP) server working? Solution # show run | begin aaa-serve...
SSH pubkey authentication
(2020-09-25) Problem How to set up an ASA to accept an ssh pubkey? Solution Create a ssh key as n...
Security Commands
(2019-01-20) Problem Collection of the SSL mitigations I've been collecting. Solution No commenta...
PPPoE Session Status
(2021-12-03) Problem What is happening with my PPPoE session? Solution Nothing, probably, but her...
Missing HTTPOnly Cookie Attribute
(2022-01-08) Problem Some security scanner is complaining that there's no 'httpOnly' cookie attri...
Force TLSv1.2 or higher
(2020-01-20) Problem ASA still responding to, and using, protocols less than TLS1.2. AKA: SSLv2 a...
Disable TCP Timestamps
(2022-01-08) Problem Some security scanner is complaining that TCP Timestamps are enabled on my A...
Self-Signed Certificates
(2018-01-10) Problem I have a new ASA and I need some self-signed certificates. Solution (this is...
Show Dropped Packets
(2019-09-20) Show Dropped Packets ALBERT# capture TEST type asp-drop all real-time […] ^C ALBERT#...
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...