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0
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1answer
544 views

how to setup SSH user with limit permission?

There are some sites provide SSH accounts only for ssh tunnel. I want to know how to make sure these accounts can only have permission to do tunnel, and how to do limit settings. And I also notice ...
1
vote
1answer
351 views

4in6 tunneling software for Windows

I have a VM running Windows 2008 R2, and I need this VM to connect to a remote site using VPN. The VPN software does not support Windows 2008 R2 or any other 64 bit operating system, so I can't ...
1
vote
2answers
391 views

Setting up local IP based filtering with OpenSSH on Ubuntu

Greetings, the server admin for our company suddenly left, and left the rest of us IT folk somewhat clueless about Linux and setting up servers and such. The setup is as follows: Our local server, ...
0
votes
2answers
465 views

Port forwarding with proxy server

I'm behind a firewall with incoming connections blocked on all ports. I'd like to run an Apache Web Server on my machine. Is it possible to configure a free public proxy server to forward the incoming ...
1
vote
3answers
6k views

How do I SSH tunnel using PuTTY or SecureCRT through gateway/proxy to development server?

We have some unix boxes setup in a way that to get to the development box via ssh, you have to ssh into a 'user@jumpoff' box first. There is no direct connection allowed on 'dev' via ssh from anywhere ...
1
vote
3answers
259 views

Hash function in shell that could be used for an ssh port from (say) hwaddr of eth0

I have a growing number of remote machines that ssh home and setup a connection to allow subsequent access via tunnel so I can get into them for maintenance. Currently, I must manually configure ...
0
votes
1answer
382 views

How to create a virtual ethernet card for SSH tunneling through USB device? [W7]

I have an SSH tunneling that is connected to an USB device that is connected to the Internet. How can I configure a virtual ethernet card that get everything to 127.0.0.1:1080?
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vote
3answers
1k views

SSH dial home daemon or automatic tunneler?

I know a number of vendors that sell network/server appliances, that have a support button, that once pressed, setup an SSH support tunnel back to the vendors main servers so the support technician ...
2
votes
2answers
660 views

Ubuntu: Compressed, but not encrypted, tunnel for TCP?

How can I set up a tunnel for TCP connections between two hosts so that I can test a few different compression algorithms? I'm aware of stunnel & SSH, but want to avoid the overhead of ...
1
vote
2answers
1k views

MySQL Workbench HTTP tunnel

Is there way in MySQL Workbench to connect to a database via HTTP Tunnel? I've used HTTP tunnel for a while with Navicat and I would like to connect on same way to a remote databases with MySQL ...
1
vote
2answers
3k views

GRE Tunnel over IPsec with Loopback

I'm having a really hard time trying to estabilish a VPN connection using a GRE over IPsec tunnel. The problem is that it involves some sort of "loopback" connection which I don't understand -- let ...
8
votes
1answer
4k views

Cannot Delete GRE Tunnel

I am configuring a GRE tunnel in Linux 2.6.26 and I've been facing a very strange problem for which I could not find any solution. I have created a GRE tunnel called gre0, but no matter what I do, I ...
5
votes
2answers
4k views

Reverse SSH Tunnel

I am trying to forward web traffic from a remote server to my local machine in order to test out some API integration (tropo, paypal, etc). Basically, I'm trying to setup something similar to what ...
0
votes
2answers
179 views

Tunneling in IPv6:

The concept of 6to4 tunneling is to do encapsulate and descapsulate an ipv6 packet through ipv4 network. The encapsulation process is: [IPv6 header][Transport Header][Application Protocol data] => ...
0
votes
1answer
68 views

Deploy Tunneling techniques

I understand about different Tunneling techniques (6to4, ISATAP and Teredo). However, most of papers and books are absent of how to deploy these techniques. For example, if I have a dual-stack router ...
0
votes
1answer
1k views

Routing subnet over GRE tunnel

Im trying to configure a GRE over IPSec connection between two subnets. The IPSec tunnel is opened and now I want to add a GRE tunnel over it: ip tunnel add GRE01 mode gre remote 10.244.0.1 local ...
1
vote
2answers
1k views

Persistent ssh tunnel in windows

I am looking for something like autossh, but for windows. I have had trouble setting up autossh with cygwin. I am tring MyEnTunnel now, but I was wondering if Windows hacks know of something better.
2
votes
2answers
447 views

IPv4 Client <-> IPv6 Server - Tunnel from client to server to use IPv6

I have a Debian server with a IPv6 Tunnel (from sixxs) and an IPv4 Ubuntu Client. Now i want to make a tunnel from the client to the server, so that i can surf with IPv6 from the client. Is there a ...
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votes
2answers
2k views

6to4 tunnel: cannot ping6 to ipv6.google.com?

Follow the Setup of 6to4 tunnel guide, I want to test ipv6 connectivity, but I cannot ping6 to ipv6.google.com. Details below: # traceroute 192.88.99.1 traceroute to 192.88.99.1 (192.88.99.1), 30 ...
0
votes
4answers
633 views

Redirect TCP connections from machine on internet to a machine behind a NAT

I would like to find a tool that allows me to do the following: I have machine A behind a NAT\Router with a web application, then I have server B accessible on the internet. Using some application all ...
7
votes
1answer
2k views

Hurricane Electric Tunnel with Pfsense?

How would I setup a HE net Tunnel to route through PFsense so I can have v6 addresses on my servers? I already have the tunnel setup on their end, but there is no instructions for PFsense.
5
votes
4answers
1k views

Tunnel with least overhead

I'd like to tunnel a large amount of traffic from my local network to a server located in a datacenter, in a way that I don't have to make many changes to my local applications. The two methods that ...
0
votes
2answers
240 views

Sun Global Desktop - Tunnelling existing X window session

I'm evaluating Sun Global Desktop as a remote connectivity solution. One thing that is not clear to me is this. When the user connects through SGD he gets a local X session and he runs his application ...
0
votes
1answer
2k views

Cisco ASA VPN tunnel to second location - all traffic flow through first tunnel

I am having trouble setting up a second VPN tunnel from my Cisco ASA 5510. When I run the packet tracer I don't see the packet going throught a NAT exempt stage nor a VPN lookup stage. First tunnel is ...
1
vote
4answers
1k views

ssh from home to machine behind firewall

Semi-newbie, so flame-throwers to 'singe only' please. ;-) I have machine A at work, which I'd like to SSH into from a machine at home (call it machine B) -- machine A is behind our corporate ...
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votes
1answer
957 views

php http tunnel to mysql connection

How to create a HTTP tunnel to PHP to MySQL connection
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vote
2answers
157 views

Secure, automatic tunnelling dæmon on Linux server?

I've been looking for software to do this for a little while but seem to find only pages that talk about projects that never materialized, or are not capable of running on a Linux system. Does anyone ...
2
votes
2answers
445 views

How to tell if an ssh ControlMaster connection is in use

I'd like to use ssh's ControlMaster feature to share connections for speed increases. I'm trying to script it so that I can start/restart/stop a number of connections to different hosts. How can I ...
2
votes
3answers
2k views

How to reinject the packet in the Iptables?

I have a packet inside a packet a.k.a tunneling. So essentially it's of the following form: [IP HEADER 1][IP HEADER 2][PAYLOAD] After reading the first header(done by a library) I will get the ...
2
votes
2answers
2k views

Multicast over SSH

I have two LANs: 10.x.x.x and 192.x.x.x. On each LAN I have a Linux machine (10.x.x.5 and 192.x.x.5) but they are not routers. I can open ssh from 192.x.x.5 to 10.x.x.5. There are multicast udp ...
1
vote
1answer
174 views

IPv6 (aiccu tunneled) server consistently resolves addresses to its own IPv6 address

I have a Fedora 10 server using an IPv6 tunnel broker (sixxs). One of the nagging things I have noticed is that using any common utilities like "wget" domains resolve to the real IPv4 destination ...
0
votes
2answers
48 views

Tunnell network requests with Windows 7

I've Windows 7 64bit Pro client in a private LAN behind a Netgear wgr614v7 router. I've also a remote Debian server machine outside. I'd like to tunnel all (or specified ports/protocols) over this ...
2
votes
1answer
196 views

Sharing local web-server (Windows, NAT) in Internet

There is a Windows machine connected to Internet by NAT (no IP, no incoming connections). Is there any way to make local web-server on this machine accessible from Internet by static IP or domain? ...
0
votes
1answer
299 views

Easiest tunneling windows http via Ubuntu server

I am trying to set up the simplest system to be able to proxy from my Firefox via one of our Ubuntu servers. Initially http/s ports would be enough and it would only happen from 2 concrete IPs ...
1
vote
1answer
160 views

How do i tunnel through a keyed ssh login into an svn server not running on a default port?

I have access to a server via standard ssh, logging in password-less via a key. On that remote server i can access another server, which has svn on a non-default port, like 174.53.45.6:3456. I'd ...
0
votes
2answers
416 views

How to tunnel an outgoing connection via an incoming connection

I guess the following will be considred a hack, but here goes: I have machines A and B, and C. B can open a connection to A, but A cannot open a connection to B (due to FW). Work: A <--- B ...
1
vote
1answer
270 views

Tunelling over HTTP

I have a network at work that is locked behind a firewall and Internet connection is available only by using a proxy server. At work, I can connect to databases that are distributed across the ...
1
vote
1answer
519 views

VMWare fusion NAT + host tunnel; access from vm

I'm having trouble accessing a port on my OSX host from a vm. I'm using NAT in VMware fusion. In my (OSX host) hosts file, I have the ip address for vmnet8 mapped to 'mac'. From my vm, I can 'ssh ...
3
votes
2answers
2k views

Keepalived over GRE tunnel for failover on VPS environment

I'm running an application on Linode. Their network does not support multicasting. Many tools used for failover (keepalived, spread/wackamole, hearbeat) require multicast to work (as far as I know). ...
0
votes
1answer
3k views

Putty double tunnel

currently I have the following problem: i can connect to Server B via ssh only if I connect to Server A (via ssh), create socks proxy with putty, and use it in order to connect to server B. So ...
1
vote
3answers
308 views

Another SSH Tunneling question

Here's the Diagram Server A ----> Server B <----- Laptop So basically Server A and Laptop can connect to Server B directly but you can't establish a connection from Server A to Laptop directly, ...
0
votes
4answers
323 views

Two DNS to same IP

I have a webserver tha actually has a tomcat6 server on port 80 and that is reachable from domain1.com. I would like to open another website on same machine using a sinatra (ruby) server and be able ...
2
votes
6answers
733 views

Access internal server from Internet without modifying firewall?

I have a server on an internal network that publishes web pages. I need access to these web pages from random clients on the Internet. The problem is that I don't have control of the firewall this ...
25
votes
5answers
18k views

What are the exact protocol level differences between SSL and TLS?

This is a technical deep dive after this overview question was asked. What are the protocol differences between SSL and TLS? Is there really enough of a difference to warrant a name change? (versus ...
2
votes
2answers
592 views

VPN connection over SSH

I'm behind a firewall which only allow ports 80 and 443 out. I have an Ubuntu server at home which got an SSH server running on 443 and it works fine. Therefore I can tunnel my traffic behind this ...
1
vote
2answers
1k views

SSH over SSH Tunnel

I have seen this question: http://serverfault.com/questions/33283/how-to-setup-ssh-tunnel-to-forward-ssh but I'm having difficulties because of OS barriers. I have someone sitting on an XP laptop ...
0
votes
3answers
1k views

Firewalls that block RDP over port 443

I need people to reach my servers over SSH and RDP. Both ports are blocked outbound at many companies, especially the large ones. However, I also suspect that in 90% of companies there is nothing to ...
0
votes
2answers
347 views

Debian: Tunnel incoming connections (SSH)

Hey! Is it possible to use a SSH connection to tunnel incoming traffic to server1 to server2, so server1 acts like a proxy? Or is there a better way to do it? Cross-server connection should be ...
0
votes
1answer
318 views

Can't remove tunnel created by Cygwin

I need to make a tunnel from Linux to my Windows 7 machine. I have been able to get it to work with Cygwin, but it's not possible to remove the tunnel later. To create the tunnel, I type: ssh -f -N ...
0
votes
1answer
161 views

How to tunneling RDP access and SSL access

I need to RDP to a terminal windows server 2003 OS and then RDP from there to my destination remote host. Same thing to SSL, first SSH to a CentOS via putty, then SSH to my destination remote CentOS ...