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0answers
267 views

Switch stunnel from self-signed cert to signed by CA cert

We use stunnel configured to provide SSL-tunnel between SERVER A (where we have stunnel configured as client) and many SERVERS B (where we deployed stunnel configured to work in server mode). We use ...
1
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2answers
332 views

multicasting in different networks in java

I'm writing a code to work through sockets in java. I've created a multicast group to which anybody can join on the LAN. But the LAN has many different networks, operated by a router, and the ...
1
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1answer
432 views

Can I limit my SSH Tunneling Speed? [duplicate]

Possible Duplicate: Can I limit my SSH Tunneling Speed? So, I'm kind of making sshusers for ssh tunneling to surf some content which is blocked by my country. But, I don't want somebody to ...
1
vote
1answer
328 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
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1answer
158 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 ...
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1answer
120 views

Obtaining and routing small IPv4 space?

I had an idea for designing a network setup in order to acquire high availability connections to my (small) network, but I seem to be running into a few problems trying to find out the particulars. ...
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1answer
879 views

What's the difference between GRE and IPIP tunnel?

And which one is better for connecting two linux machines?
0
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2answers
112 views

how to “connect ipv6 client to ipv4 only server”

I have a linux server that supports only ipv4 and an IPv6 client. How should I use tunneling or NAT to get the connectivity done from ipv6 client to the ipv4 server? Client is a softphone that sends ...
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3answers
792 views

Secure tunnel between two Windows Server 2008 R2 hosts

I'm looking for a way to set up a secure tunnel for HTTP traffic between two hosts on separate networks/domains over a single port. The caveat is that I have no control over the physical aspects of ...
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3answers
2k views

OpenVPN server will not redirect traffic

I set up an OpenVPN server on my VPS, using this guide: http://vpsnoc.com/blog/how-to-install-openvpn-on-a-debianubuntu-vps-instantly/ And I can connect to it without problems. Connect, that is, ...
0
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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 ...
0
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2answers
763 views

Public IP Routing over Private GRE tunnel

I have a GRE tunnel configured between two linux boxes. The tunnel works fine. I can ping from each host the other private ip. Head privateip: 10.0.0.1 publicip: 8.8.8.8 Tail privateip: 10.0.0.2 ...
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1answer
2k views

How should openvpn config look like to tunnel “all traffic” thru vpn?

Many related questions on this site, looked thru a few of them, none helped my problem. Anyways my client is Vista, server is IPCop My client config file: #OpenVPN Server conf tls-client client dev ...
0
votes
1answer
105 views

Rp_filter and linux tunneling

Can someone please explain with an example why reverse path filtering need to be disabled while using IPIP/GRE tunneling? echo 0 > /proc/sys/net/ipv4/conf/all/rp_filter
0
votes
1answer
373 views

OpenVPN - Client connected to server, but not tunneling

For context, I am migrating my VPN server. I duplicated the old set up almost exactly, and now clients connected to the new VPN server cannot tunnel properly (but they connect just fine). While ...
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3answers
2k views

Keeping an SSH Tunnel open, and running a remote command

A computer behind a firewall (at a remote location) connects to my server to open a tunnel... the intention is that from the server I can connect to the computer over SSH. The computer makes the ...
0
votes
1answer
529 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 ...
0
votes
2answers
399 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 ...
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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
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2answers
250 views

How to remap IPs visible from local machine to IPs visible from a machine I have SSH access to?

I'm so far out of my depth I don't even know what to google for. There's a server I can connect to via SSH. Via that server I can access other server on its subnet via SSH. What I want to do is be ...
0
votes
2answers
163 views

Set up a “relay” service

I'm trying to create a 'left client' > server < 'right client' setup but need some advice and tips. Let's say that I have a server-daemon on the left side, like a vnc-server that connects to the ...
0
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2answers
3k views

Possible to IPSec VPN Tunnel Public IP Addresses?

A customer uses an IBM SAS product over the internet. Traffic flows from the IBM hosting data center to the customer network through Juniper VPN appliances. IBM says they're not tunneling private IP ...
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4answers
211 views

Generic reverse tunnel

I am searching for a generic reverse tunnel application. Here is what I have in mind: It would consist of an inside (behind nat) and outside part. The "inside" part would try to establish a connection ...
0
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1answer
40 views

Tunnel http requests to another server?

I have a VPS we'll call it mydomain.com Is it possible when someone goes to mydomain.com, the request is forwarded to another different server, let's say 192.168.0.5 processed by that server and then ...
0
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2answers
275 views

How to Use The IPs Of Remote Linux server as The Additional IPs of My Current Linux Server?

I have 2 Linux Servers 'X' and 'Y'. Server X has lots of resources but 2 public IPs (1 main IP bound as eth0 and 1 additional IP bound as eth0:0). Server Y has 9 public IPs (1 main IP bound as eth0 ...
0
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1answer
508 views

GRE keepalive with Linux and RouterOS

I have a Linux host and couple of routerboadrs. I created a GRE tunnel, but Linux does not answer keepalive packages. Then router mark gre connection as unreachable, so I cant send to Linux host from ...
0
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1answer
87 views

Is there any tunneling protocol that can aggregate multiple packets within a packet? [closed]

I think the title says it all. I wonder if this exists. Reasons for wanting this could be to reduce overhead. Update: Related ideas/implementations: The Tor cell which is the transport unit in ...
0
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1answer
574 views

SSH Tunnel can't connect - connection times out, even though regular login works

I am trying to set up an SSH tunnel with a SOCKS proxy in Firefox, so I can surf the internet securely from public wifi. Both client and server are running Ubuntu 12.04 LTS. After setting up port ...
0
votes
1answer
172 views

Route all internet traffic through SSH tunnel

I currently have set up an Amazon EC2 Virtual Private Cloud. Because of IP limitations I can't provide all the instances in the VPC an elastic IP. I have one public facing server and I have a bunch of ...
0
votes
1answer
635 views

Which software could I use to setup a 4in6 IP tunnel (RFC 2473) on GNU/Linux

Here is my problem. I have a server A that has two IP addresses. One public IPv4 and one IPv6. Server B has only one IPv6 address. I want to host most of my services on server B (because I have more ...
0
votes
2answers
56 views

Will Tunneling help in this scenario?

I have a computer running 24 hours at a site protecteed by firewall, this computer call it 'A' can connect to internet but unable to host a site since the port is blocked. I have an idea to purchase ...
0
votes
1answer
308 views

Using OpenLDAP's meta backend to map incoming user to someone else

I am attempting to set up an LDAP "tunnel" to work around an application that requires a configuration slightly different to my environment. I need to be able to bind as USER1 to an LDAP server & ...
0
votes
1answer
665 views

pppd PAM use and combining with CHAP/MSCHAP

Managed to successfully configure pppd to use PAM (/etc/pam.d/ppp) for authentication steps (used login option in addition to auth). However, this seems to work only for PAP (require pap, refuse ...
0
votes
1answer
294 views

Is it possible to use RRAS to create a tunnel over same subnet

I would like to setup some form of secure tunnel between servers on the same lan. We are currently using rackspace for cloud hosting, and would like to secure all communications over the 'private' ...
0
votes
1answer
483 views

Debugging flaky SSH tunnel

We have a dedicated SSH tunnel server, which supports a few dozen remotely located hosts. The hosts each create a reverse tunnel into the server with assigned port numbers, using autossh to keep the ...
0
votes
2answers
636 views

SSH option AllowTcpForwarding is bypassable?

I understand this is used to prevent users from using the server as a proxy. But if the users can use curl/wget, doesn't that mean it's essentially bypassable? The manual page regarding SSH also said ...
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votes
2answers
104 views

Tunnel SSH “Client -> Firewall -> Server1 -> Server1.2”

I need to make a tunnel from a client box to a server. The problem is that there are 2 boxes between them: CLIENT --- FIREWALL ---{ SERVER1 --- SERVER1.2 } CLIENT ============================= ...
0
votes
1answer
201 views

iproute2 tunnel sit

According to this article http://www.consulintel.euro6ix.org/ietf/draft-palet-v6ops-6in4-vs-6over4-01.html 6in4 is only encapsulation mechanism that is used by transition mechanisms like 6over4. What ...
0
votes
2answers
740 views

Can I limit my SSH Tunneling Speed?

So, I'm kind of making sshusers for ssh tunneling to surf some content which is blocked by my country. But, I don't want somebody to slow down others internet speed , therefore I want to limit the ...
0
votes
2answers
2k views

How to configure a tun interface on Linux for SSH port forwarding?

I am trying to forward port 139 from a Windows machine to my Ubuntu SSH server on a tun interface with the ip address 10.0.0.1. This is so that I can access the windows shares on the machine on my ...
0
votes
2answers
385 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 ...
0
votes
2answers
178 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 ...
0
votes
2answers
236 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
2answers
47 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 ...
0
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1answer
294 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 ...
0
votes
4answers
322 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 ...
0
votes
2answers
337 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
160 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 ...