KafeKafe » Sys Admin

A better way to block brute force attacks on your SSH server — Rudd-O.com

echen — Wed, 11 Aug 2010 15:25:52 +0000

An elegant way to secure SSH. Wish I thought of this

A better way to block brute force attacks on your SSH server — Rudd-O.com.

O’Reilly’s CD bookshelf

echen — Wed, 04 Aug 2010 20:13:49 +0000

Awesome

O’Reilly’s CD bookshelf.

The SSH Agent (SSH, The Secure Shell: The Definitive Guide)

echen — Wed, 04 Aug 2010 20:12:35 +0000

The SSH Agent (SSH, The Secure Shell: The Definitive Guide).

Copying files between two remote hosts

echen — Wed, 04 Aug 2010 16:22:51 +0000

Using ssh_agent forwarding and scp to copy files between two remote hosts.

via Gwyn’s Blog: Copying files between two remote hosts.

boot.kernel.org(BKO)

echen — Tue, 03 Aug 2010 14:26:51 +0000

Boot Linux via PXE over HTTP

boot.kernel.org(BKO).

Writing udev Rules

echen — Sun, 01 Aug 2010 23:08:21 +0000

Recent Linux distributions are using udev to manage devices on the computer. Usually, only root is allowed to directly access certain hardware. This becomes a problem when normal users need to access printers etc. that are directly attached to the computer.

Editing the udev rules allows you to set user permissions during boot allowing normal users to print hassle free.

On Debian, udev settings are stored in /etc/udev/rules.d . These rules need to be named properly to work: NN-rulename.rules ( where NN is a number, user rules usually are < 60 )

Debian also uses udevadm instead of udevinfo to retrieve device information needed to build the rulesets.

ex.
sudo udevadm info –query=all –name=ttyS0 –attribute-walk

Udevadm info starts with the device specified by the devpath and then
walks up the chain of parent devices. It prints for every device
found, all possible attributes in the udev rules key format.
A rule to match, can be composed by the attributes of the device
and the attributes from one single parent device.

looking at device ‘/devices/pnp0/00:06/tty/ttyS0′:
KERNEL==”ttyS0″
SUBSYSTEM==”tty”
DRIVER==”"

looking at parent device ‘/devices/pnp0/00:06′:
KERNELS==”00:06″
SUBSYSTEMS==”pnp”
DRIVERS==”serial”
ATTRS{id}==”PNP0501″

looking at parent device ‘/devices/pnp0′:
KERNELS==”pnp0″
SUBSYSTEMS==”"
DRIVERS==”"

Details for rule writing can be found here:

Writing udev rules.

Ninite – Windows Software Install Pack

echen — Tue, 27 Jul 2010 18:38:52 +0000

Other similar software / services:

InstallPad

AppSnap

Ninite Blog.

9 Things You Should Be Doing With Your Server

echen — Thu, 22 Jul 2010 19:05:09 +0000

via 9 Things You Should Be Doing With Your Server, But Probably Arent – RoundHouse Managed Server Support.