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Console Commands

Cisco ASA

(2017-04-26) Some Console Commands # show run | in <string> # more run | begin <string> useful e...

Updated 9 months ago by david

Port Span

Cisco Switch

Session Monitoring This is the vocabulary that Cisco uses to describe port mirroring, port monito...

Updated 9 months ago by david

Password Reset

Cisco ASA

Bypass cisco system configuration Plug in your serial console, reboot the ASA press 'ESC' when it...

Updated 9 months ago by david

Mailguard

Cisco ASA

Problem Can't send or receive some messages through a Cisco ASA firewall. Solution Turn off Mailg...

Updated 9 months ago by david

Faking a secondary IP

Cisco ASA

(2013-04-30) Problem ASA won't let you define a secondary IP on an interface. Solution Fake it wi...

Updated 9 months ago by david

Debug Site to Site VPN

Cisco ASA

(2013 March 8) Useful commands for a v9.x VPN debug Phase 1: you want to see MM_ACTIVE in the St...

Updated 9 months ago by david

SCSI Bus Rescan

Linux CentOS 5

(2014-03-24) Problem You've hot-added a new disk and now want to use it without rebooting. Soluti...

Updated 9 months ago by david

SquirrelMail: Users Can't Log In

Linux CentOS 5

(14 October 2012) Problem I have SquirrelMail version 1.4.8-5.el5.centos.13. When users attempt t...

Updated 9 months ago by david

SSL Certificate Warning

Linux CentOS 5

(2014-01-20) Problem Email: ################# SSL Certificate Warning ################ Certifi...

Updated 9 months ago by david

TCP Window Scaling

Linux CentOS 5

(5 November 2012) Problem: When sending mail to a particular target, we were unable to send messa...

Updated 9 months ago by david

Unexpected CUPS dependencies

Linux CentOS 5

(or, isn't RPM supposed to handle this kind of crap?) Error: Filter "foomatic-rip" for printer (s...

Updated 9 months ago by david

X Display Through SSH

Linux CentOS 5

(2014-03-24) Problem I ssh into a remote host and the $DISPLAY variable isn't set. Solution # yum...

Updated 9 months ago by david

Yum barf when updating package 'file'

Linux CentOS 5

Problem [dave@centos5-dave ~]$ sudo yum update file Loaded plugins: fastestmirror Loading mirror ...

Updated 9 months ago by david

Disable IPv6

Linux CentOS 6

(2014-09-16) Problem Things are slow. In our case, attempting to mount a previously-umounted file...

Updated 9 months ago by david

Dummy Cert Expired

Linux CentOS 6

Problem I'm getting messages that say: ################# SSL Certificate Warning ################...

Updated 9 months ago by david

Firefox Java Plugin

Linux CentOS 6

Yeah, 2015 and this isn't a solved problem. Problem Java in Firefox. CentOS 6.6, 64-bit. Solution...

Updated 9 months ago by david

Kickstart Ethernet Devices

Linux CentOS 6

(2014-02-17) Problem the specified interface eth0 does not exist Solution In the general case, sp...

Updated 9 months ago by david

Force NFS v3 Mounts

Linux CentOS 6

(2014-07-17) Problem My CentOS 6 client is trying to mount everything using NFS v4 and I want it ...

Updated 9 months ago by david

Client nis Setup

Linux CentOS 6

(2019-03-25) NIS client setup cookbook #!/bin/bash DOMAIN=my.nis.domain SERVERNAME=server4.my.ni...

Updated 9 months ago by david

Leap Second

Linux CentOS 6

Problem My nasty java app is eating up all the CPU it can get. (Possibly sharing with something e...

Updated 9 months ago by david