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Search results for Tunneling the hard way: using slirp, pppd and socat

Gentoo

Tunneling the hard way: using slirp, pppd and socat

Post date: January 29, 2006, 13:01 Category: Network Views: 11392 Comments
Tutorial quote: Every now and then you might come across a "bad" ISP. The one I have at home for example is dropping UDP packets ever so often when I try to play online games -- and it tends to drop random packets while I try to log onto a gameserver too which makes a certain game I like to play crash during the loading phase so it can't recover. I also heard of other ISPs blocking certain ports on external servers -- universities for example seem to like blocking p2p network ports and the school i was attending till last august blocked everything but port 80 for http -- including ftp which made even on-topic "research" a pita at times.
Usually there's three ways of working around this problem if "giving up" is not an option to you: a) change your ISP, b) use ssh to redirect ports, c) connect to an external VPN to route for you. a) can be tricky -- it's impossible if you're sharing the link with your parents and they insist on their email addresses or in the university/workplace/school scenario. b) will only work with single port/host combinations and for c) you will need a full-fledged rootbox idling around on the internet -- which tend to be expensive and "virtual servers" might not work because those often don't include tun/tap devices and/or kernel-level ppp support if you rent them and in case you rented them you probably can't fiddle around with its kernel to enable it (that was my problem at least). If any of this rings a bell to you, read on and discover method d)
Unix+clones

Tunneling SSH over HTTP(S)

Post date: March 12, 2006, 09:03 Category: Network Views: 3406 Comments
Tutorial quote: This document explains how to set up an Apache server and SSH client to allow tunneling SSH over HTTP(S). This can be useful on restricted networks that either firewall everything except HTTP traffic (tcp/80) or require users to use a local (HTTP) proxy.
CloneZilla

Back Up/Restore Hard Drives And Partitions With CloneZilla Live

Post date: November 30, 2008, 13:11 Category: Miscellaneous Views: 10090 Comments
Tutorial quote: This tutorial shows how you can back up and restore hard drives and partitions with CloneZilla Live. CloneZilla Live is a Linux Live-CD that you insert into your computer; it contains hard disk and partition imaging and cloning tools similar to Norton Ghost. The created images are compressed and can be transferred to a Samba-, SSH-, or NFS server or to a local hard drive or USB drive.
Linux

How to create System Image

Post date: November 17, 2008, 11:11 Category: System Views: 3411 Comments
Tutorial quote: Suppose you have a 40GB hard disk and a removable hard disk whose capacity is 60GB, and you want to backup all the files from the hard disk to the removable disk. With "dd", it is a very easy task. Again, suppose your hard disk's Unix device name is /dev/sda and the removable disk is /dev/sdb. The following command can copy all the content from /dev/sda to /dev/sdb:
Linux

Replacing A Failed Hard Drive In A Software RAID1 Array

Post date: January 30, 2007, 17:01 Category: System Views: 3562 Comments
Tutorial quote: This guide shows how to remove a failed hard drive from a Linux RAID1 array (software RAID), and how to add a new hard disk to the RAID1 array without losing data.
Linux

Back Up/Restore Hard Drives And Partitions With Ghost4Linux

Post date: January 11, 2007, 19:01 Category: System Views: 4039 Comments
Tutorial quote: This tutorial shows how you can back up and restore hard drives and partitions with Ghost4Linux. Ghost4Linux is a Linux Live-CD that you insert into your computer; it contains hard disk and partition imaging and cloning tools similar to Norton Ghost. The created images are compressed and transferred to an FTP server instead of cloning locally.
Unix+clones

SSH Port Forwarding Through a Proxy Server

Post date: April 18, 2005, 03:04 Category: Network Views: 2597 Comments
Tutorial quote: A common use of SSH is port forwarding (tunneling). This use causes traffic directed to a particular port to be sent to a specified port on another computer. Because traffic is sent through SSH, the traffic is encrypted, allowing the transmission of sensitive data through arbitrary services.
Linux

Tunneling MySQL connections through SSH

Post date: January 2, 2007, 20:01 Category: Security Views: 3460 Comments
Tutorial quote: This is a description of how to set up a secure tunnel between your MySQL Server and a locally running MySQL Administrator using Putty. By creating a secure tunnel to your MySQL server using Putty, you can grant localhost access to powerful applications like MySQL Administrator while at the same time, make your server appear as if it isn't even there. In effect, make your MySQL server disappear from the outside world.
Ubuntu

NTFS Disk Recovery

Post date: February 12, 2010, 12:02 Category: Miscellaneous Views: 3055 Comments
Tutorial quote: Mary, the daughter of a friend is in college: her Windows XP laptop constantly reboots and, we suspect, has a bad hard drive. The system will boot a live CD (Ubuntu 9.10 Karmic Koala Desktop), and data on the hard drive can be read. During boot, the live CD identifies disk errors and tries unsuccessfully to repair them.
Linux

How to secure VNC remote access with two-factor authentication

Post date: May 21, 2007, 22:05 Category: Security Views: 3242 Comments
Tutorial quote: VNC is the most popular remote access solution today. However, it was developed to provide remote access, not to provide secure remote access. Administrators have to add security to VNC by tunneling it through an encrpyted channel such as SSH and adding a layer of authentication. In this article, we will show you how to combine the NoMachine NX server to encrpyt VNC and remote X session combined with two-factor authentication from WiKID Systems to create a secure, fast remote access solution.
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