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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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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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 :: 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 :: 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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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 :: 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 :: 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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Server :: Bind Reverse Zone : No Name With Reverse Lookup

Oct 12, 2009

I am using RHEL5. These are my config files:

Code:

options {
listen-on port 53 { 127.0.0.1; 192.168.14.54; };
listen-on-v6 port 53 { ::1; };
directory "/var/named";

[code]....

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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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Ubuntu Networking :: Closing A Reverse SSH Tunnel?

Jan 31, 2010

so i start it with ssh -f -R 4096:localhost:22 me@server.com and it comes up and someone can log in at the remote end. how do i close the tunnel from the initiating end ? netstat doesnt seem to identify my end of the tunnel , unless im looking for the wrong thing!

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Networking :: Reverse SSH Tunnel Ubuntu And Windows 7?

Oct 3, 2010

I am currently running 64-bit Windows 7 from my home laptop and I would like to establish an SSH reverse tunnel to my laptop from my work Ubuntu 64-bit machine. I have been reading many "tutorials" that have led me nowhere and I feel as though I'm chasing my tail now. I have done the following on my Ubuntu machine:

Code:
ssh -R 19999:localhost:22 laptop_ip
and on my Windows machine, using putty, did the following:
Code:
Host Name: host_IP

[Code]...

I am able to access my Ubuntu machine when on my work network but there I have been unsuccessful when it comes to trying to remotely access it. I have tried everything that I can think of (though I am a novice). If there is any help/suggestions/ideas that could help, please let me know and don't hesitate to ask for more info!

p.s. I would also like to enable x-forwarding, but for now I would like to have remote access to the Ubuntu machine.

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Fedora Networking :: Set Reverse Dns For IP?

Feb 28, 2009

how to set reverse dns for my IP? I've configured bind with a reverse dns for my IP, but it doesn't work when I test it.

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Networking :: Set Up Reverse DNS To Domain?

Sep 12, 2010

I have a domain and the settings for it are pointed at my IP address. But when I look up my IP address, it does not show my domain as the hostname. What settings do I have to change to make my IP translate into my domain as the hostname?

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Ubuntu Networking :: 10.10 Reverse X11vnc Color Depth Changes?

Nov 15, 2010

I have looked around and haven't had a lot of luck finding any information on this. I could be blind...but I'm not sure, haha.

I do a lot of remote support for my clients (I do PC repairs and training). I have recently starting suggesting to some of my basic users that they give Ubuntu a try. So far it has been very well received and they are loving it. The problem I am running into is that some of them use laptops in multiple places, and some use routers that are not easily configured. In each case it makes port forwarding a large pain in the behind to allow for remote access.

I have started using the X11vnc reverse connection and it has been working well, except for the fact that it is using high quality color depth (24bit I think?). I know when starting the connection from my end I can set the color depth, but is there any way to set the depth of a reverse connection?

Also, I understand that using just vnc over the Internet is not secure. I need to look into a decent guide to set up SSH tunneling for this. I don't suppose anyone knows of a good guide for 10.04 and 10.10?

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Ubuntu Networking :: WLAN0 Will Do Reverse Dns Lookups But Not Forward

Jul 17, 2011

p, li { white-space: pre-wrap; } Laptop connects to a (wired) ethernet port on a DLINK DIR-625 wireless router using dhcp. All works perfectly.

Using the same laptop connecting to the same wireless router, but using the wireless adapter and dhcp instead of wired ethernet, I can ping IP addresses on the LAN and also WAN IP's to/from anywhere on the net. I can perform reverse name resolutions (ip to host name), but not forward lookups (host names to ip addresses). I can use the DNS server obtained from dhcp or specify, by ip address, a DNS server to perform the lookups. This makes no difference.

Web pages (LAN server pages or from the internet) are not accessible by site address name or by ip address specifically.

Kubuntu 11.01
$ uname -r
2.6.38-10-generic
$ iwconfig

[Code].....

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Networking :: Bind9 : Reverse Lookup And PTR Value?

Oct 23, 2009

I have the following bind9 configuration, and I'm trying to resolve reverse lookup IP address to name.

$ttl 38400
mydomain.org.INSOAmyhosting.com. (
1243281304
10800

[code]...

** server can't find 1.2.3.4.in-addr.arpa: NXDOMAIN

Is my PTR wrong, or what do I need to have the reverse lookup working ?

Note: I replace real IP by 1.2.3.4, same for my domain name.

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Networking :: Forward Reverse Dns Subnet?

Mar 25, 2010

I have the zone record 0.16.271.in-addr.arpa which is working fine.

The NS for that zone is setup for my own name server.

I however would like to forward requests for 172.16.0.224/28 to another name server. How would I do this?

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Networking :: Multiple Reverse SSH Tunnels For 100+ Servers?

Jul 26, 2011

I am looking at using reverse SSH tunnels to manage servers on client sites. I have played around with reverse tunnelling, and have it working on one server back to my middle man server from which I can SSH across from my own PC. All working fine. When I scale this up to 100+ servers reverse tunnelling in, usernames & passwords become a pain, so I'd prefer to use RSA keys instead. My question, finally you might say, is this, to successfully ssh from my PC to the remote server, do the RSA keys need to be on the middle man server as well, or is it just my PC and the remote server?

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Networking :: Reverse DNS Pointer External Server?

Dec 9, 2010

I config a revers dns im my domain, but him pointer to external server. Check all dns, virtual servers and apache configurations and dont find where it pointer to out. I too check with:

# host -t ptr 4.204.120.64.in-addr.arpa

4.204.120.64.in-addr.arpa domain name pointer srv.businessconnection.com.br. Should point to another server, this no is the correct!

I make equal config another server and work very well, but in this are some erro. Somebody know what I doing wrong?

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Networking :: Reverse Lookup Fail For Another Domain?

Jun 3, 2011

I've got 2 domains:

[URL]

This is how I've configured my resolv.conf file:

[URL]

When I run the host command, it can resolve machines in one.domain.com using both hostname and ipaddress. But when I run the host command for machines in two.domain.com, it only works for hostnames but not ip addresses. The result for ip addresses is:

Host 100.3.2.1.in-addr.arpa not found: 3(NXDOMAIN)

Why doesn't it try the 2nd nameserver in the resolv.conf file when resolving by ip adddress? Reverse pointers are configured for each machine in their respective domain dns servers. O/S is Oracle VM Server 2.2.1 (similar to Red Hat). Kernel is 2.6.18-128.2.1.4.37.el5xen.

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Networking :: Reverse SSH Connection Super Slow?

Dec 3, 2009

I am have setup a temporary ssh server to reverse ssh to remote clients. When a client has an issue I have them reverse ssh to my server and then from my laptop or workststation connect to there workstation. The problem that I am having is when I connect to them from behind my firewall from my laptop the connection is really slow but when I connect to them from the firewall it is fast. I am using Firestarter which is simply a GUI for iptables. I am trying to figure out what iptables rule is causing the connection to slow down behind the firewall.

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Fedora Networking :: Reverse Usb Tethering Android Device With 15 ?

Sep 2, 2011

I don't know what the problem is, I followed the instructions here: [url]

But like some other folks there, netcfg usb0 dhcp just eventually times out.

I have an htc evo and fedora 15.

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Networking :: DNS Reverse Lookups Not Working For Private IP Addresses / Fix It?

Jul 13, 2011

We have bind 9.3 running on CentOS 5.2. We are able to do reverse lookups for the public IP's but not able to resolve to the private IP's on our network.

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Networking :: Iptables Or Reverse Proxy For Oracle Database?

Feb 15, 2010

I'm trying to access my oracle database (port 1521) from the outside.What I have:Outside -----> Proxy ----> DatabaseWhat I try is to configure a reverse proxy or iptables for accepting connections on port 1521 and transfer them to database. Only one computer of the outside will have access to the database.I suppose than this can be done with iptables or another way.In the real environment proxy will have two nicut for test purposes my computer will have only one (for test purposes, the tree computer will be in the same net)

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