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3answers
4k views

I have a site to site VPN tunnel set up between offices, when I connect from home to either I cannot see the other side

This is my first time posting here so please be gentle. The title describes my problem, I will outline the setup: I have a site to site bidirectional VPN tunnel set up in two offices 100 miles apart. ...
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2answers
3k views

strange output on ssh tunneling: output failed; connect failed: Connection timed out;

I use ssh user@xx.yy.zz.41 -p 1234 -D 9898 command for tunneling, and I set firefox socks5 ip to 127.0.0.1 and its port to 9898. It works successfully ,but in terminal I have error in output: ...
2
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6answers
731 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 ...
2
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3answers
2k views

SSH socks proxy tunnel without interactive session?

I use ssh -D 1080 myhost.org ...to open up an SSH tunnel from my work machine to my home machine, so as to bypass the idiotic content filter on the corporate firewall. However this also creates an ...
2
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2answers
5k views

Cisco ASA VPN - Route all internet traffic from remote site through main site's ISP

I have a situation with two locations connected via site-to-site VPN. Site A has a web filtering appliance. I'd like to route all traffic from Site B over the VPN tunnel and out of Site A's internet ...
2
votes
1answer
853 views

Making a multi hop SSH tunnel a mysql server (3-4 hops)

I'm trying to get to a mysql server on a remote network, and to get to it I currently have to do several ssh hops, so I can use the mysql command line interface. I'd really like to do a mulit-hop ...
2
votes
2answers
446 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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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 ...
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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 ...
2
votes
2answers
591 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 ...
2
votes
4answers
619 views

How to browse to a webserver which is reachable through the SSH port only

I have a server at work which is behind a firewall (the company's firewall) so it is reachable only thrugh port 22 (SSH). I'm able to connect to the server with putty without problems. Also, that ...
2
votes
3answers
7k views

How to setup an IPSec / GRE tunnel on Windows Server 2008

I have a Windows Server 2008 that has a single network interface configured with a public IP address. My business partner has a private network. From my server, I need to access all the devices on his ...
2
votes
4answers
589 views

Need an absolute proxy server to route HTTPS, FTP, etc

I have managed to setup a squid proxy server as an HTTP proxy and this is working well. However, it does not work with HTTPS. I am looking at making use of an external machine to setup as a proxy for ...
2
votes
1answer
998 views

tunnel using autossh behaving differently than the exact same command using ssh

I am trying to set up a double-ssh tunnel between two hosts, so I can proxy traffic through it. Using the normal SSH command, I have gotten the following to work: ssh -t -L2000:localhost:2000 ...
2
votes
1answer
330 views

IPIP Tunneling for EC2 instances in different regions

According to this web page, it seems IPIP Tunneling should work in EC2 instances. But I'm not sure whether it also works for instances in difference regions. Did anyone have experienced it before? ...
2
votes
2answers
441 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
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2answers
3k views

Unknown protocol when trying to connect to remote host with stunnel

I'm trying to set up a stunnel for WebDav on Windows. I want to connect 80 port on my local interface to 443 on another machine in my network. I can ping the machine remote machine. However when I use ...
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4answers
1k views

Sending all traffic through a tunnel

I have set up a IPIP tunnel between my workstation and my server. I can add routes manually to have traffic going through the tunnel like this: ip route ad 216.221.35.27 dev foo I'm not sure ...
2
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1answer
258 views

How to get the list of SSH tunnels connected with the username used?

The connection is established from Desktop(D) to Server(S) with ssh -D PORT username@Server. From the Server, the list of ssh users connected can be obtained with who, but the ssh tunnels are not ...
2
votes
1answer
2k views

IPsec tunnel to Android device not created even though there is an IKE SA

I'm trying to configure a VPN tunnel between an Android device running 4.1 and a Fedora 17 Linux box running strongSwan 5.0. The device reports that it is connected and strongSwan statusall returns ...
2
votes
1answer
111 views

Create a tunnel to my dedicated windows server

I have a Win 2008 dedicated server. The remote access for MSSQL db is disabled. However I want to connect to it during development from my system. I need to create something like a tunnel from my lap ...
2
votes
1answer
363 views

My own IPv6 tunnel

I have a load of IPv6 addresses on my VPS which are not tunneled they are provided by the VPS host. But my ISP at home BT, has no plans yet to allocate IPv6 addresses to even business customers. I ...
2
votes
3answers
150 views

Firewall based equivalent to SSH tunnelling

I have a web server that connects to a 3rd party database server and is granted permission to do so via a firewall rule on the database server. When I'm developing locally on my laptop, I use an SSH ...
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? ...
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2answers
2k views

How can I set up squid to act as a tunneling proxy to expose a VPN or SSH tunnel?

I'd like to set up a tunneling proxy accessible by URL--so, to access bar.com through the tunneling proxy, you'd go to foo.com/bar.com and continue to browse bar.com transparently from there. I can ...
2
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1answer
443 views

Does a HTTP tunnel solution exist that doesn't use CONNECT, HTTPS or chunked encoding? [closed]

I am looking for a way to get a fast OpenVPN connection out through a restrictive firewall (this is not a workplace and I am not breaking any code of conduct). Currently I'm using port 443 direct to ...
2
votes
1answer
160 views

How to silently buffer tunnel traffic on network split, and automatically renew the connection when possible?

I have a slow connection between two machines, one in Germany and another in China. Connection sometimes breaks apart, and the packet loss is about 5%, at times even reaching 20%. Chinese machine has ...
2
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1answer
539 views

portforward ec2 instance to localhost for rails development

I'm trying to work with facebooks real-time updates but I'm having trouble giving facebook a callback address that they can use. My dev machine is behind a firewall so I want to use an ec2 instance to ...
2
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0answers
485 views

SSH reverse tunnel for Windows RDP

Microsoft RDP seems to behave strangely when forwarded via ssh reverse (-R) tunnel. Some products can handle it without a problem (i.e. tunnelier) some fail (libssh2, putty). When connected, the ...
2
votes
1answer
235 views

Configuring Cisco Router 2851 to handle MPLS traffic tunnelling

Some guy configured a Cat 6500 Core Switch on my net to handle MPLS traffic (and it works). The MPLS line is also directly connected to the internet, so our edges and firewalls are bypassed actually. ...
2
votes
2answers
589 views

I have an SSH proxy working, now I need to select a different outgoing IP for my client

I have a SSH tunnel set up to my dedicated server via Putty which I am using as a socks proxy. The problem is I need to use a different outgoing IP address than the main IP of the dedicated server. I ...
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5answers
2k views

Use Windows/Mac MySQL GUI over SSH Tunnel

I am working on a client's website and he has hosting through 1and1. They don't allow connecting directly to their mySQL server from anywhere. I can't for instance load up a mySQL GUI on windows and ...
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3answers
2k views

Squid traffic tunneled through VPN

So what I'm trying to do is have a Squid Proxy run on 1 machine along side a VPN connection. What I want to happen is all traffic running though the Squad Proxy would run though the VPN for its ...
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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4answers
585 views

Securing SSH tunnels

We have an application that uses SSH to connect to a server : the application's network traffic (database, some custom TCP protocols, etc...) is tunneled through a SSH connection. We use a key pair ...
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3answers
1k views

telnet port forwarding

Anyone knows if it is possible to setup port forwarding with a telnet client, like it is with SSH?
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4answers
3k views

How do I set up a port forwarding through SSH?

I have a shell account (Debian) and I want all my localhost browser internet traffic to go through that shell account. I know how to configure the internet browser and how to configure Putty for ...
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2answers
950 views

Windows Jump Host

A Jump Host is a special purpose computer on a network typically used to manage devices in a separate DMZ. So, I'm looking for the proper way to implement this for a target running on Windows. I was ...
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2answers
346 views

Tunnel SSH from A->B->C [closed]

I'm looking to setup a tunnel using PuTTY on Windows. Ideally I'd SSH directly from A->C, however, I can't from the network I'm on. I can, however connected from A->B->C. C is running a vncserver, ...
1
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3answers
323 views

“Tunnel” from one network to another

I'm sure the answer to this would be available on Google but I don't really know what I'm Google-ing for. Situation; We have two networks; our own internal network (192.168.0.[0-255]) and our ...
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3answers
513 views

IPv6-only client to IPv6/IPv4 dual stack server tunnel?

I have a IPv6-only client and a IPv6/IPv4 dual-stack server. The client can connect to the server via IPv6. I want to set up a tunnel on the server so the client can access IPv4 resources through the ...
1
vote
1answer
167 views

My sysadmin is on vacation, Help!

I wanted to trouble shoot a certain issue on the server, but I could not connect my debugger since the person who maintains the firewall is off on a vacation. I dont want to mess with his settings. He ...
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2answers
757 views

Https tunnel for carrying TCP and UDP packets

I had an issue with running Openvpn over UDP in my college network. The firewall was dropping UDP connections. As http and https were working fine and assuming that the firewall was inspecting packet ...
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3answers
5k 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 ...
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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 ...
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1answer
879 views

Why are my reverse SSH tunnels suddenly dying?

I have had persistent tunnels from all my client computers to my servers in place for about a year now. I've not updated my server or changed any configuration files--as far as I remember--for several ...
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1answer
2k views

RDP from 2008 R2 through a tunnel fails

I'm trying to RDP from a Win7 to a 2008 R2 machine through a tunnel (think SSH, but not exactly). It fails and the following is in the 2008 R2 (destination) event log: System Event Log, LsaSrv ...
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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 ...
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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 ...
1
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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 ...