- Published:
- September 10, 2007 – 11:03 pm
- Author:
- By Dave
The technology has been around for a while to do unattended OS installs, using kickstart on redhat for example. These installs are typically done remotely. Kickstart is basically done off of an image file, which can be inserted via a floppy, CD, or now a USB Keychain drive.
Another technology that has been around a [...]
Categories: Linux, System Administration, Windows
Tagged: actual hardware, admin-tools, America, bootp server, dgram
protocol, dhcp server, Ethernet, firewall, legacy-software-development, Linux, MAC Address, option routers, Peter Anvin, private network, root
server, system-tools, text-internet
mdadm
kernel
grub
e2fsprogs, tftp server, The bootp protocol, trivial ftp protocol, udp, Windows Unattended Installation
- Published:
- January 8, 2007 – 12:57 pm
- Author:
- By Dave
Developing web apps cross platform can be a pain sometimes, as the drivers used in Windows are typically not available (by default anyway) in linux. For example, if you are using perl based software in linux, and you need to connect to a Windows database (for example, MSDE 2000 or SQL Server)
There are two essential [...]
Categories: Code Samples, Configurations, Linux, Windows
Tagged: database software, firewall, iMIS software, Linux, linux server, Lyris Technologies, open source software, Perl, PHP, Software, The software
- Published:
- October 4, 2006 – 8:15 am
- Author:
- By Dave
Here is something that I did not know – DNS servers use TCP port 53 to do zone transfers (axfrs). Make sure to open that port up in your firewall if you are allowing zone transfers from your DNS server. Knowing that could have saved me a lot of time
So for future reference:
Incoming [...]
Categories: Configurations, Security, System Administration
Tagged: DNS, firewall, udp
- Published:
- October 2, 2006 – 4:51 pm
- Author:
- By Dave
Apache’s mod_proxy module is simply one of the best Apache modules out there. With it, you can do all sorts of things that you usually would not be able to do if you are behind a firewall or other limited network situations.
A problem that recently came up for me was how Microsoft Outlook Web Access [...]
Categories: Configurations, Linux, System Administration, Windows
Tagged: apache, dav, firewall, http, IIS administration, Internet Explorer, Linux, linux server, microsoft, SSL, United States, USD, Web Access, Web Access Apache
- Published:
- September 20, 2006 – 11:40 pm
- Author:
- By Dave
If you are a system administrator of a linux system, you may find the following log entries familiar:
Sep 15 02:00:30 sol sshd[16364]: Failed password for invalid user test from ::ffff: 61.167.x.x port 53382 ssh2
Sep 15 02:00:30 sol sshd[16365]: Failed password for invalid user test from ::ffff: 61.167.x.x port 53394 ssh2
Sep 15 02:00:30 sol sshd[16366]: Failed [...]
Categories: Linux, Programs, Security, Shell, System Administration
Tagged: firewall, linux system, ssh server
