Edit /etc/network/interfaces, and do it like this below:

Make sure, you have all interfaces listed and automatically started:


auto lo eth0 eth1
iface lo inet loopback


First uncomment the DHCP, if it was active for eth0:


# The primary network interface
#auto eth0
#iface eth0 inet dhcp


Now you can enter the fixed values for eth0:


#custom
iface eth0 inet static
address 10.1.1.233
netmask 255.255.255.0
network 10.1.1.0
broadcast 10.1.1.255
gateway 10.1.1.254


If you have more interfaces, type all in as abowe.

iface eth1 inet static
address 80.xx.xx.xx
netmask 255.255.255.0
broadcast 80.xx.xx.254
network 80.xx.xx.0


We’ve installed a NAT+VPN to get rid of Microsoft’s one, and implemented the same functionality with PoPToP version 1.3.0.

The necessary settings are the following:

1) try if you have the necessary kernel modules (in Ubuntu 6.10, all is included. if you don’t have them, you’re doomed - you need to re-compile your kernel)

modprobe ppp_mppe
modprobe ip_gre


if the reply is the well known unix’s golden silence, you need to add the modules to /etc/modules:

ppp_mppe
ip_gre


to have it loaded, and reboot.

2) Install pptpd

apt-get install pptpd


3) in /etc/pptpd.conf, have the following:

option /etc/ppp/options.pptpd
speed 115200
localip 10.1.1.10 #our eth0
remoteip 10.1.1.228-238 #our ip stack
listen xx.xx.xx.250 #our eth1


4) change /etc/ppp/options to the following:

lock
noauth
refuse-eap
refuse-chap
refuse-mschap
nobsdcomp
nodeflate
require-mppe-128


5) in /etc/ppp/pap-secrets, don’t forget to add the blank user and password
* *

4) use the following settings in /etc/ppp/options.pptp:

lock
name pptpd
proxyarp
asyncmap 0
-chap
-mschap
+mschap-v2
require-mppe
lcp-echo-failure 30
lcp-echo-interval 5
ipcp-accept-local
ipcp-accept-remote


This setup will work with any Windows 2000/XP client, and all pptp configs on Linuxes. (with regards to http://poptop.sourceforge.net/dox/radius_mysql.html)

Enjoy

I just wanted to have a nice GUI on a test environment, so without getting 200 megabytes for xubuntu-desktop or 524 megabytes for ubuntu-desktop, I simply installed the following:


apt-get install xserver-xorg
apt-get install xfce4


with these packages - only about 40 megabytes to download - you’ll have a clean and working desktop.
I found some errors, possibly because I previously installed X.org, that I needed to

ln /usr/X11/Xorg -> /etc/X11/X

first, then

sudo Xorg -configure

to let it happen:)

NOTE: *make sure to have a mouse and a keyboard attached* or this setup will be broken.
Of course, you can enter

Option "AllowMouseOpenFail" "1"

into your xorg.conf > Section “ServerLayout”

If you too configure it via ssh and start X by error, and see the .XAthority file locked error, type:

xauth -b quit

Well, if you want to use another drive than C: with the above config, open WinSCP (I use the FAR plugin) and on the remote directory tab type in: /d/directory_you_want_to_use

I’m using OpenSSH 3.x on all servers both Windows and Linux / Unix and Macs as well to remotely access files and services. With OpenSSH for Windows I faced with the following error:


C:\unix\Console2>ssh servername.hu -l balint
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ WARNING: UNPROTECTED PRIVATE KEY FILE! @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
Permissions 0644 for '/cygdrive/x/.ssh/id_rsa' are too open.
It is recommended that your private key files are NOT accessible by others.
This private key will be ignored.
bad permissions: ignore key: /cygdrive/x/.ssh/id_rsa
Enter passphrase for key '/cygdrive/x/.ssh/id_rsa':


This is of course not the way it should be - it should normaly authenticate with the keyfiles; however on Windows we don’t have chmod to change the permissions. It turned out, that NT rights are not successfuly loaded with Cygwin, if your files are on a network drive - and X: is a remote server for me.

So - instead of running unnecessary circles: we can change the CYGDRIVE and the CYGPATH variables (even temporarily) to check our .ssh folder on a local path:


set CYGDRIVE=c:
set CYGPATH=\unix

copy x:\.shh c:\unix\.shh


And voila:


C:\unix\Console2>ssh servername.hu -l balint
Last login: Mon Mar 19 17:11:58 2007 from xx.xx.xx.140
[balint@servername.hu ~]$


#!/bin/sh

/etc/init.d/$1 $2 $3

I found this tip at linux-noob. Thanks!

I’ve recently found out on my Mac, that nslookup will be obsolete; and we need to use dig instead of this well known tool. If you want to install it on Fedora, just type:
apt-get install bind-utils