Ubuntu Networking :: How To Do Split VPN Tunneling Like In Windows

Nov 3, 2010

In windows if I want to do split tunneling, I just uncheck the Use as Default Gateway Box as seen here URL...In Ubuntu, I went to my VPN connection, IPv4 settings, routes..., checked "Use this connection only for resources on its network".And I could no longer ssh into machines on campus.

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Networking :: Stuck With Ssh Tunneling Because The Default Method For Tunneling Requires Root Access While WinSCP

Mar 28, 2010

I have a local computer (local), and remote computer (remote) behind of remote server (server). Also, I have user access to all of these 3 machines. Now, I want mount some directory, located at remote, to my local mount-point via sshfs. How should I setup my local sshfs and what should be done on server to make this mounting?

I'm stuck with ssh tunneling because the default method for tunneling requires root access while WinSCP somehow could do this with only user access (the tunnel server could be configured there in 'tunnel' panel).

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Ubuntu Networking :: X11 Tunneling To Windows Not Working?

Feb 20, 2011

I want to tunnel X apps to windows with PuTTY. I have the following in my sshd_config:

Code:
X11Forwarding yes
X11DisplayOffset 10

[code]....

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Ubuntu Networking :: Reverse SSH Tunneling

Feb 2, 2011

I want to be able to SSH into my computer that I can't expose port 22 on. I've tried the ssh -R ... several times, but can't manage to make it work.I have my home computer (want to SSH into), server (can SSH into), and some computer I want to SSH from.Do I need to install the sshd on the machine I want to SSH into? What are the commands I need to enter to forward from my server to my home computer?

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Ubuntu Networking :: Tunneling Through School AP

Mar 14, 2011

I am trying to tunnel through my college's free AP so I can get access to protocols outside of http and https. The school has an in-browser DNS redirect until you log in.The output of "cat /proc/version" on the server OS is "Linux version 2.6.35-27-generic (buildd@palmer) (gcc version 4.4.5 (Ubuntu/Linar o 4.4.4-14ubuntu5) ) #48-Ubuntu SMP Tue Feb 22 20:25:29 UTC 2011" The client OS is Windows 7. What I have done so far is use Proxy Cap to redirect applications to a Putty tunnel connected to the server. Eventually I want to tunnel that SSH connection through my school's firewall, so that I can keep encryption and have a reasonable amount of ease with setup.

I am not particularly educated on the inner workings of the DNS redirecting so I was not sure what to search for. My attempts to connect Firefox over normal http proxies failed and since all ports are blocked besides http and https I didn't attempt any socks or SSH. I have also tried simply hosting the SSH server on http ports with little success. I hope that I can do this without having to purchase a domain, but that's starting to seem like that won't be the case.

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Ubuntu Networking :: How To Setup Ssh Tunneling In Firefox

Jul 15, 2010

I am useing bshellz and i want to know how do i setup ssh tunneling in firefox when i am surfing the web.I newbie when it come to ssh tunneling.

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Ubuntu Networking :: Ssh Tunneling To Virtual Machine?

Mar 6, 2011

I am a linux beginner and dont know that much about networks! I have access to a linux VM. The machine is remote and i access via putty. If i can access this machine via SSH and putty, is there any reason why i should not be able to use ssh tunnelling to connect to a vnc server?

I don't know the details of the server and what firewall is set up but i believe that tunnelling uses port forwarding over the ssh connection that is already set up. Where does the port forwarding actually occur? At the actual linux VM or on the router the VM is connected to?

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Networking :: Tunneling Through SSH Using OzymanDNS?

Feb 27, 2011

I am trying to setup a version of OzymanDNS but am not quite sure I am understanding part of the instructions found here.My domain/website is hosted with a web hosting company, using their name servers. I have added a sub domain [URL], using an A record to send any requests for [URL] to my home IP address, where I have a server running. Do I need to also add the code below to my server at home which has BIND installed or are the instructions expecting that I have full control of the main name server already?

Code:

tunnel.example.com. IN NS www.example.com.
www.example.com. IN A 123.123.123.123

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Networking :: Any Way Can Get It Tunneling Over Socks Proxy?

Feb 24, 2010

I have been ssh tunneling, which works great.I can browse the internet by simply tunneling my traffic through my SSH server.the following command: ssh -ND 9999 username at myserver.i cant postlinks.is all I have type, and I can connect to a SOCKS proxy server on localhost:9999.My problem is that I have an application that only supports HTTP proxies.Is there any way I can get it tunneling over the socks proxy?

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Fedora Networking :: Ssh Reverse Tunneling Failed?

May 7, 2011

I am trying to use the ssh reverse tunneling through the command

Code:
ssh -l login -p port <ip address> -R <remote port>:<local Ip>:<local port>

In order to enable some one in the remote host to connect my machine. through the command

Code:
ssh 127.0.0.1:<remote port>

However when I try to execute the first ssh command above I got the warnning

Code:
Warinning: remote port forwarding failed for listen port <remote port>

The problem always happens when the remote host I have tried to connect is my Fedora 14 machine. I can do that when using an Ubuntu as the remote host.

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Fedora Networking :: Modules Needed For Gre And Other Tunneling Support?

Sep 23, 2010

When I try to create a network tunnel, I get ioctl: no such device returned by the terminal. Which modules do I need to ad with insmod to enable tunneling?

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Networking :: Tunneling Internet Through PPTP Using Poptop And Squid?

Jun 20, 2010

I'm looking for a way to tunnel the internet connection of my Ubuntu VPN server to the remote client.The server is running Ubuntu Server 9.04 64-bit, and has a fully functional installation of Poptop and Squid. Is there a way I can get internet requests from the VPN client to tunnel over the VPN and be connected through Squid? I'd think this would be a iptables thing, but I'm not sure.

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Networking :: Limiting Sshfs Access To Specific Directory / Tunneling Nfs Over Ssh

Jan 22, 2010

I have a server with a /data/ directory, everything in the /data/ folder has "-rwxrw-rw- 1 root root" permissions.all works fine, multiple users are mounting this over a lan and everyone is able to modify files. However I would like to be able to access the /data/music/ directory from the internet.

Is it possible to configure sshfs to only accept logins from a user restricted to reading the /data/music directory, or would it be possible to tunnel nfs over ssh in such a way that everyone on the lan 192.168.0.xxx has unrestricted access to the data directory, but something coming from outside only has read access to the music directory. Although is one were tunneling nfs over ssh, the nfs mount request would appear to come from the server itself. The router is at 192.168.0.1 and the server is at 192.168.0.3.This Seems very much like what I want to do, however I'm having a bit of trouble getting this to work well with other users mounting with full rights over the lan too.

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General :: Split Files On Windows Compatible With System Cat?

Mar 17, 2011

I need to split up a large file on windows so I can upload it in parts to a linux machine. I'm looking to do the opposite to this hopefully with some native utilities to keep it simple.

I understand the linux side of the equation to be cat filea fileb > file

what is the simples way to split files on a windows machine which can then be joined together via cat on a linux machine?

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General :: Split A Large File To Download On A Windows Machine?

Apr 16, 2011

I am removing some old graphics from my server and one of the gallery programs have created two enormous directories that I cannot even open with FTP.

I tried to tar each directory and the first came out to about 37gb and the second keeps failing (its bigger one would assume).

How can I archive and split these into smaller files?

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Ubuntu Networking :: Point To Point Tunneling Server Connection Errors?

Mar 28, 2011

I recently installed the pptpd server on my system and set it up according to these instructions:HTML Code[URL]t=132029However after setting everything up on attempting to connect to it from a windows machine (windows 7 home premium to be specific) it gives me two errors which are 720 and 800...It reaches "registering your computer on the network" fine and then gives 720 on the first attempt to connect and then 800 on the second attempt to connect...and then on the third 720 and 4th 800 and so on..My system running the server's I.P is 192.168.1.70My system running the windows OS trying to connects I.P is: 192.168.1.66

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General :: Split Large File And Transfer To Windows External Drive?

May 17, 2011

How does one split a large linux file and transfer to windows external drive ?

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Ubuntu Networking :: Maverick Networking Split Personality?

Nov 28, 2010

So, I use Ubuntu 10.10 on an old Dell laptop as the router for the house. It shares its Vodacom 3G with the rest of us, via the network port of the laptop. This works fine. We can all surf to our hearts' content.I can also VNC into the desktop of the router machine if I ever need to accomplish X, Y or Z on it, which is handy.However, I cannot for the life of me SSH in, or connect to the MySQL server that also lives on that machine. This is a pain.What I want to do is set up a database on a remote server, and then tunnel in via SSH. I'm trying to test that configuration using local machines on my network. My desktop machine happens to be XP, and I'm using Putty to try to initiate the SSH connection, but I keep getting a message saying NETWORK ERROR: CONNECTION REFUSED.

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Software :: Split A File, Without Using 'split'?

May 20, 2011

Im in a unique situation where a box has a 400G file, on FreeBSD, without thesplit' utility available

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Ubuntu Networking :: Connection Drops Randomly For A Split Second

Jun 5, 2010

I could not find a solution to this problem anywhere. I use a ubuntu server to play (stream) mp3s and movies to other computers on my network. It works most of the time, but sometimes in the middle of a movie or a song it will drop/hiccup--saying it is "not reachable". I am not overtasking the server at all, and merely playing an mp3 that takes up less than 10% of the bandwidth, yet it drops it for a split second.

I have a WRT160N router (DD-WRT of course) with 4 clients connected (2 of which are wired). The ubuntu server is connected via ethernet and all machines have the same issue. It can't be the router because another Windows machine works just fine for streaming these files. I just can't understand how it can lose connection for a second or so. It may just be the file-system or some service that is hiccuping, but I have no idea...

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Networking :: Split Traffic Over 2 Nics?

Feb 25, 2011

I'm running 2 asterisk box (Centos) ,and the two servers are connected through 2 iax trunks.on one server i have 2 nics ,each one is connected to internet,now i want to use isp 1 for the first trunk and isp 2 for the second trunk.

iax 1 is listening on 12345
iax 2 is listening on 11223

is there a way to split traffic on both nic using ports (netfilter iptables)?

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Ubuntu Networking :: Split Video Stream Across Multiple N/W Interface?

Sep 15, 2010

I want to do a video streaming to a remote PC across the internet. The video bitrate is around 600 kbps. But my internet connection supports only a maximum upload bandwidth of 400 kbps.So I thought I will get one more connection and use the combined upload b/w of 800 kbps to stream the video. I hope there should be a way to split the stream across two interface and merge them together at the remote endpoint. All this has to be done at real time.

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Networking :: Split Lets Say Wlan In Two In Same OS To Get Different IP Address?

May 14, 2011

Is it possible to split a NIC into two lets say.I've seen how in virtual box you set an option (I don't remember which one) that the guest OS uses the same NIC (virtualized?) and gets an IP assigned from the router. For example the host connects to the router using wlan0 and recieves IP 192.168.1.2 then the guest uses the same NIC wlan0 (i think correct me if I'm wrong thats why I ask) and gets 192.168.1.3

My question is: Is it possible to split lets say wlan0 in two in the same OS to get different IP address?and if it is. Can you connect to two different SSID with the same NIC using wpa_supplicant?

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Networking :: Split Routing - Traceroute Not Displaying Unrouted Hops

Dec 16, 2010

I've used linuxquestions.org from time to time, but never needed to register until now.An in-depth explanation of this issue is already described over here: [URL], so I will merely quote it again here - it seems nobody knows the solution over at Ubuntu's forums...:

Quote: I recently switched my home server from debian lenny to ubuntu maverick. I've managed to port all my configs and stuff and so far I'm very happy. There's one tiny thing that's griping me, that I never experienced before with debian's (older) packages/configuration... Here's the situation: My server dials up 2 pppoe (adsl) interfaces (different isp's) with split internet routes.

If I run a general traceroute to an internet IP, all the hops which are not routed via the same interface as the destination host/IP, will appear as "* * *" in the traceroute. This was never the case before and it would be preferred to see the IP's of all routers along the way regardless of whether they are routed... (I used to be able to see IP's like 10.0.0.x before through INTERNET traceroutes if they were hops along the way [IP's which would be unreachable if traced directly], and that's no longer the case) - isn't this kinda defeating the point of traceroute?

[Code]...

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Ubuntu Servers :: SSH Tunneling Only

Feb 1, 2011

I currently have SSH set up on my network and facing outwards so that I can use my private key to authenticate and remotely administrate my server along with the ability to use SSH tunnels when needed to encrypt my traffic. However, I want to be able to give a friend access and use my server as a SSH tunnel, I do not want him to be able to execute any commands or write any files, just to create an SSH tunnel. Although it would not be too much of a large issue if he could write to his own home directory, I just want to ensure that he isn't able to browse around the whole file system and keep it as simple as possible.

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Ubuntu :: Webmin: Tunneling Over The SSH?

Mar 7, 2011

I tend to not use webmin, but there's just some things I dont want to deal with via command line. I know that having Webmin require an SSH tunnel is possible, but i'm not sure how to approach it.

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Ubuntu :: SSH Or VPN For Persistent Tunneling Of All LAN Traffic From Router?

Mar 23, 2010

I am currently setting up a old box to serve as a general, quality router/fileserver that should give me fine control over my network traffic. This router will serve as the bridge between several local users and the Internet, along with quite a few machines.Traffic is expected to be heavy, in the sense of multiple powerusers using the Internet to the fullest, not from one machine doing anything insane like Torrenting. The connection profile will reflects lots of up and down, not necessarily a huge number of persistent connections.Due to security concerns, the need to build an encrypted tunnel between a SoHo LAN and a dedicated server is unescapable. I'm trying to determine whether I can pull this off with a simple SSH tunnel on the box serving as the local router, or if a VPN (either PPTP or L2TP) is a more appropriate solution.Proxying won't work, because not all apps can easily be socksified across the Windows, GNU/Linux, and OSX platforms that the users will need. For this reason, I have to pull this off strictly at the router level.

I'm not all that familiar with the specific details of each protocol's performance as far as their latency, efficiency, overhead, and fault-tolerance are concerned. I'm less concerned with a protocol taking up CPU as I am with useless bytes and latency it might be introducing to the link. I don't know the low-level nitty gritty of how each protocol encapsulates its traffic.If there is an existing package for this, it would be great, but at this point I'm simply trying to figure out which protocol is more appropriate before I begin digging in the wrong direction. The biggest concern, of course, is that the chosen protocol aggressively re-establish sessions should the connection suddenly drop, which will be a concern given the SoHo line I'll have to work with. The actual outbound server is no concern, as it has four cores and a Gbps line.

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Ubuntu Servers :: Allow A Ssh Connection For Tunneling But No Shell?

Oct 7, 2010

I need to allow connection to some users on a servers with key authentication so that they can setup a tunnel to access a web application. But I don't wan't them to have a access to a shell.

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General :: Tunneling From One SSH Connection Into Another One?

Jul 14, 2011

I have a machine called ic that I can ssh to. There is another machine, fw, that is on a completely different VLAN, and I cannot talk to it. ic is on both my VLAN and the VLAN that fw uses, and so my usual procedure for sshing to fw is to ssh into ic and from there ssh into fw. If I wanted to script this action, however, how could I get it to work?

I tried ssh root@ic "ssh root@fw", but this results in the message Pseudo-terminal will not be allocated because stdin is not a terminal, and then I get three messages from fw, presumably because it has null input:

Permission denied, please try again.
Permission denied, please try again.
Permission denied (publickey,password).

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Ubuntu Security :: VNC Setup With SSH Tunneling For Remote Desktop

Feb 16, 2010

I am attempting to set up a VNC with ssh tunneling for remote desktop between my laptop (opensuse 11.2) and my desktop (kubuntu karmic) and using the instructions here: [URL] and here: [URL] but I am having trouble getting remote desktop to work once I establish the ssh tunnel

I start out with
Code:
ssh <user@remotepc> -p <non22port> -L 5900:localhost:5900
That seems to wok and connect properly

The problem comes when I try to use a remote desktop client on the laptop to initiate the VPN desktop sharing and point it to
Code:
localhost:5900

Thats when I get a notification on the host saying:
Code:
Refused uninvited connection attempt from 127.0.0.1

And on the laptop I get:
Code:
VNC server closed connection

I have tried messing with the few settings in Krfb, but none seem to have any impact. How do I open localhost:5900 and allow VPN tunneling to the host machine?

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