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PPTP VPN Client
(2018-04-30) Setting A PPTP VPN Client You have to set the firewall to accept GRE tunnel traffic:...
Example nmcli Commands
(2018-10-15) Problem nmcli Solution Some recently discovered examples: # nmcli con # nmcli con s...
Firewalld Limit Remote Source Connections
(2019-02-14) Problem I have an internet-facing service that I want to restrict to a particular (s...
Join AD
(2019-11-28) Problem # realm -v -U dave join mydomain.local [...] ! Couldn't create computer acc...
Samba AD Controller Notes
(2019-11-25) Backplot At a new customer site, I inherited a Active Domain that was hosted on a Sa...
Set Hostname To VM Name
(2019-11-28) Problem /t Solution For whatever reason, the vmware-tools package (and the open-vm-t...
Upgrading Fedora
(2019-03-18) Problem I want to update Fedora to another version. In General It is recommended to ...
DHCP Reservation Not Working
A: dhclient now supports RFC-4361! (Please note that this is an answer to a question nobody asked...
makeinfo build error
2013-05-15 Problem Building gcc 4.1.2 on CentOS 6 halts with the error: WARNING: `makeinfo' is mi...
DNSBL running wild
(24 January 2012) So years ago we get called into this small company working out of I don't remem...
Interface-based VPNs
(2015-03-10) Something which I realized a few years back and have not read anywhere before or sin...
Buying Monkeys
Once upon a time in a village, a man appeared and announced to the villagers that he would buy mo...
Dependency Hell
(7 September 2012) Poul-Henning Kamp writes about A Generation Lost In The Bazaar: Here is one e...
Dave's Law Of System Administration
Law There's always an easier way. Corollary Things frequently get done sooner if you just do them...
Dave's Law Of Internet Measurement
Law Anything which can be measured, will be measured on the Internet. 1st Corollary Anything meas...
IT Will Be A Utility
(written back in 2005) IT Is A Utility For most companies, IT is just as much a utility as HVAC, ...
Know who you are paging
(5 October 2011) So a long time ago, the company I worked for at the time decided that the head o...
Mixed-Mode Filesystems Suck
Problem Mixed-mode file systems suck. You'll have to be a bit more specific. Someone applied a CI...
Mixed-Mode Filesystems Still Suck
Problem Doing an rsync to a filer, the user gets gratuitous errors: rsync: mkstemp "$LONGPATH/$FI...
Notes About Network Attached Storage
You have multiple places for problems to occur. Performance areas are: how fast can your disks (...