Call for contributors to the Ubuntu Server Guide
location: ubuntuforums.com - date: September 11, 2012
We are always in need of people to review current instructions provided in the Ubuntu Server Guide and to write new material. The guide follows the practices of Ubuntu Documentation Team whose home page is https://wiki.ubuntu.com/DocumentationTeam To kickstart folks, a sub-page has been created for the Guide here: https://wiki.ubuntu.com/Documentatio...ntuServerGuide You can also help by suggesting [...]
UFW log guide/tutorial ?
location: ubuntuforums.com - date: November 17, 2012
Can please someone point me to some kind of beginner's guide/tutorial to read UFW log messages ? I've set up some basic rules in UFW,but then when looking at the log messages I frankly don't understand what I see,can't figure out what things like AUDIT,DST,TOS actually are,therefore I can't check if said rules are indeed doing what I wanted.Thanks.
Obscure automatic connections guide
location: ubuntuforums.com - date: May 12, 2013
I put together a list of obscure automatic remote connections that Ubuntu makes and a guide how to stop them.
The purpose of this thread:
1. Educational - provide information to people who would like to know/control what connections their computer makes. Of course, beside bugs, these connections are made for a reason, so the point of this thread is to explain why they are made, and let user decide/justify for himself the need/use for them.
2. To make Ubuntu better (by exposing bugs - maybe they will get fixed sooner) and more transparent (no surprises in the logs).
Some reasons to stop these connections may be:
1. Privacy/security concerns about computer connecting to the internet without any obvious user action/consent (automatic updates being well-known exclusion) - either because user don't want remote server/internet provider to be aware of their online "presence" or for some other reason.
2. Bandwidth/traffic limited connection - when every byte counts.
Tesseract 3.0 + Ubuntu 10.04 Installation Guide
location: ubuntuforums.com - date: December 17, 2010
I am using the Tesseract package which provides OCR (optical Character Recognition for electronic document images. The 10.04 repositories currently only have 2.04 however the latest version, 3.00 is out with many new features. Here is how I got everything working:
1. Install Imagemagick
Imagemagick helps convert all the document images to a format Tesseract likes. We use PDFs.
"sudo apt-get install imagemagick"
Usage would be like
"Convert -density 300 scanneddocument.pdf -depth 8 scanneddocument.tif"
This converts to a good quality tiff image with 8 bit depth (required by Tesseract). You can change the density amount as you may get better results.
2. Install Tesseract
Get the required packages available in the repositories:
sudo apt-get install libpng12-dev
sudo apt-get install libjpeg62-dev
sudo apt-get install libtiff4-dev
("sudo apt-get install zlibg-dev" is suggested in the Tesseract readme but isn't available. I found I didn't
Guide: Openswan, XL2TP and PPP on Ubuntu Maverick for iPhone VPN Connection
location: ubuntuforums.com - date: December 14, 2010
*** Working Again As of Latest Edit ***
This setup will allow you to login to your own Ubuntu VPN server using your Iphone's default IOS VPN settings.
Install the necessary packages.
sudo apt-get install openswan ppp xl2tpd
Using the following setup:
192.168.1.22 Ubuntu Server IP Address
192.168.1.1 Gateway Internal IP
On your router, forward ports 500/udp and 4500/udp to the server at 192.168.1.22. This procedure can be found elsewhere and is not covered here.
Here’s my /etc/ipsec.conf file.
(no changes necessary from text below)
Here’s my /etc/ipsec.d/l2tp-psk.conf file.
(change left & leftnexthop values)
Important NOTE: dpd entries allow you to connect multiple times without having to restart IPSEC...Thanks
Beginners guide to SSH
- date: December 30, 2010
computer A is the computer which initiates the ssh connection. that computer needs no additional software.
computer B is the computer which will run the ssh server, and is the computer which will be accessed.
First, The only-CLI way:
On Computer B:
1. First open the Terminal (Applications->Accesories->Terminal, or the quick way [ctrl]+[alt]+[t]), on the computer you want to control (connect to) and install openssh-server :
sudo apt-get install openssh-server
2. then you need to know the IP and the user of the computer which you will connect to:
to see the ip-address:
ifconfig | grep “inet addr”
to see the username:
On Computer A:
3. It is time to connect, and it is in the form
ssh [email protected]
just to mention: if you only have one computer but still want to learn, it it possible to issue a ssh connection to yourself, with openssh-server installed you ju
Beginners guide to Linux networking with ssh and SFTP
location: ubuntuforums.com - date: December 26, 2011
Sharing files over a network Ubuntu to Ubuntu:
First you will need to install the openssh-server on every computer you wish to access remotely. The client is installed by default.
You can install it with the command:
sudo apt-get install openssh-server
Or you can find it in the software center.
To establish a connection through the GUI:
Click an empty spot on the desktop to set the global menus. Move the cursor to the upper left and the global menus will appear.
Click on the "File" menu then select "Connect to Server".
Set "Type" to SSH, then fill in the rest of the blanks.
If you are going to create a bookmark for this connection I would recommend not checking the "Remember this password" at this time, if you do it later you will have more options. If you do not wish to create a bookmark you can remember the password or not, which ever you prefer.
Next click the Connect button.
You will get a message that says "The Ide
SSH tunnel guide
location: ubuntuforums.com - date: March 10, 2010
I am not sure if this will be of particular use to anyone, but I have written what I believe is a short, explicit, and friendly guide to SSH Tunnels:
In return, if anyone notices any inaccuracies, please reply to this post and I will fix it.
Edit: I just discovered the "Tutorials and Tips" Category.. currently looking for a way to move this thread
Edit_2: I can't seem to move or delete this thread; reporting it.
Error in Ubuntu Server Guide? DSA SSH keys?
location: ubuntuforums.com - date: July 17, 2010
In the Ubuntu 10.04 Server Guide, the SSH setup section suggests creating DSA keys for SSH authentication.
According to SSH/OpenSSH/Keys guide at https://help.ubuntu.com/community/SS...20SSH%20Logins (among many others), RSA is more secure than DSA:
SSH can use either "RSA" (Rivest-Shamir-Adleman) or "DSA" ("Digital Signature Algorithm") keys. Both of these were considered state-of-the-art algorithms when SSH was invented, but DSA has come to be seen as less secure in recent years. RSA is the only recommended choice for new keys, so this guide uses "RSA key" and "SSH key" interchangeably.
Shouldn't the Server Guide setup guide users through creation of the more secure RSA keys? as in
ssh-keygen -t rsa
Is there some compelling reason to use DSA when running Ubuntu Server?
Install guide for NoMachine NX on Lucid 10.4
location: ubuntuforums.com - date: August 6, 2010
Hi folks, I am posting a quick guide for installing NoMachine NX client/node/server because I found a lot of past threads where many people were confused how to do this. Hopefully this thread will help.
I needed to setup a remote desktop software for my office computer and after searching around I found NoMachine NX to have the most features, very secure and good documentation.
My system is a new install of Ubuntu 10.4 Lucid 64-bit.
I am using the latest versions of the NX client, node and server as of August 5, 2010
Note: Before you begin, you must install ssh and openssh-server
sudo apt-get install ssh openssh-server
1) Edit the sshd_config file and replace it with the one below
sudo nano /etc/ssh/sshd_config
(Note: Make sure to add your username in the AllowUsers variable, but make sure nx is still there)
# Package generated configuration file
# See the sshd(8) manpage for details
# What ports, IPs and protocols we listen for
# Use these options to restrict
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