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1
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0answers
46 views

Cannot make TCP Connection with OpenVPN Server

Client OpenVPN assigned IP: 10.8.0.2 ↓ TCP on 1194 Internet ↓ Router port-forwards 1194 to server- Public IP 104.162.67.198 ↓ Server LAN IP: 10.8.0.1 I think the above is what I am trying ...
0
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0answers
4 views

VPN Connection Over 3G [migrated]

I have a PPTP server running on my linux box, and i can successfully connect an android client to it using WiFi but when i try to connect to the server using data-connection (3G) it fails to connect. ...
0
votes
1answer
55 views

GRE Tunnel in CentOS

How to create a GRE Tunnel in CentOS pointing all connections to server A for the server B? I have a public server with DDoS protection and need to use this as a firewall to filter acess to the other ...
1
vote
1answer
28 views

Ip-in-Ip tunnel not working — Packets not being decapsulated

I am trying to forward packets from HostA to HostB using ip-in-ip tunneling. While packets are reaching their destination, they are not being decapsulated by the receiving host, and thus being dropped ...
0
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0answers
57 views

Debian forward through NAT EOIP GRE

eth0 = WAN eth1 = LAN to forward any port through nat I use e.g: iptables -t nat -A PREROUTING -p tcp -d 79.188.31.34 --dport 8291 -j DNAT --to-destination 192.168.0.36:8291 and it works, but ...
0
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0answers
14 views

Encapsulating VPN tunnels on Linux

I'm playing with python and networking and I want to write a program that allows me to select one of several VPN connections and encaspulate them within each other. That is to say, if I have VPN-A, ...
0
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0answers
31 views

Can I terminate an SSL Tunnel at the Load Balancer in Amazon VPC?

In other words, can the Amazon VPC load balancer be configured as an SSL Host? As a proof of concept, we've created this setup: Heroku Appserver <---> VPC Load Balancer <---> Ubuntu SSL ...
1
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1answer
132 views

Debian don't forward through L2TPv3 more than mtu l2tp virtual interface

R3--R1--Internet--R90 R3: ip addr 10.123.0.3 R1: sudo ip l2tp add tunnel tunnel_id 699 peer_tunnel_id 699 encap udp local 5.254.174.8 remote 5.254.174.90 udp_sport 699 udp_dport 699 sudo ip l2tp add ...
3
votes
1answer
80 views

Can I use something like a tunnel for SSH in this Linux/Windows Remote Desktop scenario?

I have a Linux server (call it server-L) which i cannot directly ssh to it. In order to ssh it i should connect to a windows server(call it server-W) and then make ssh connection from it to my Linux ...
2
votes
1answer
274 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 ...
0
votes
1answer
75 views

How can I bridge a VM to a remote network?

I have a system running QEMU/KVM (via libvirt). One of its VMs needs to have a presence on a subnet that is not local to the VM host. I have a Linux system on the remote subnet. Is there a way to ...
1
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0answers
27 views

process group A default route tun0, B default route tun1, etc

I have a Linux box with N tunnel interfaces, tun0, tun1, and so on. I want to set things up so that a particular group of processes, A, has its default (and only) route pointed at tun0. Meanwhile, a ...
0
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0answers
146 views

Redirecting traffic through ssh tunnel

I'm trying to redirect the traffic coming from clients to external proxy server. I've the following architecture +----------------------------+ ...
-1
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1answer
33 views

how to help 2 devices share local ports behind firewall through a ssh server with ssh reverse tunnel port forwarding [duplicate]

A diagram of the project: It is working under Putty with its GUI configuration, but it is not working if using command line through Putty. how to replicate the GUI settings in putty with command ...
0
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0answers
302 views

ssh reverse tunnel port forwarding connection fails

Updated: diagram http://s22.postimg.org/b2jfgawup/diagram_ssh_tunnel_a1.png I am able to do a reverse port forwarding through the PUTTY GUI with settings similar to below. once I apply this setting, ...
0
votes
1answer
58 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 ...
1
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0answers
107 views

HTTP CONNECT request body is reduced to / when proxying through Apache

I am using Apache 2.2.15 as a reverse-proxy running on Scientific Linux 6. It is being used to connect an application to a remote server, where the application being connected to requires that the ...
0
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0answers
75 views

Listening “through” GRE Tunnel

Currently I'm looking to learn about using GRE Tunnels and I have the following scheme: Server1 (200.1.2.3) ----> Server2 (190.1.2.3) Both servers have public IPs Then I've setup a GRE Tunnel with ...
0
votes
1answer
859 views

Vpn tunnel to Amazon VPC with pfsense

I'm trying to create an ipsec tunnel between my office and our Amazon VPC. However I have never used ipsec before so I'm at lost. The gateway/firewall is running pfsense 2.1.3-RELEASE (i386) on ...
1
vote
1answer
141 views

4in6 tunnel for heterogeneous systems [closed]

I have clients (OS X 10.9 and Linaro/Ubuntu) in a native IPv6 network and a Server (Debian) in both native IPv4 and IPv6. The Plan is to use the Server as a gateway of sorts, as in 4in6 ...
1
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1answer
294 views

Using a reverse tunnel to access a firewall-ed web server serving HTTPS

I have a device ("A) on my network that only serves content via HTTPS, it's not accessible as its behind my router/firewall. I have another machine ("B"), elsewhere on the internet (fake IP of ...
0
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0answers
84 views

What are pro and cons of gre and vlanx?

I need to connect two openvswitches in order to make a vlan. So, I would simply create trunk ports for certain vlan ids...ok. In order to connect two openvswitch, now, these ports can be either gre ...
0
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0answers
66 views

NO_PROPOSAL_CHOSEN error while connecting

crypto isakmp policy 1 encr 3des authentication pre-share group 2 ! crypto isakmp client configuration group vpn key cse123 pool SDM_POOL_1 acl 100 netmask 255.255.255.0 crypto isakmp ...
1
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1answer
723 views

Routing default gateway for 2nd vlan over a tunnel (linux/tinc)

Fixed: It turned out to be a combo of what BatchyX said (missing the 172.16.101.0/24 route on the remote end), and tinc on the remote side failing to run a -up script (the script wasn't executable). ...
3
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4answers
142 views

Tunnel over HTTP Server [closed]

As you know, in many countries censorships are prevents us to reach some sites. In Turkey, there will be censorships on Facebook and Youtube. I thought It will be great to pass these censorships ...
1
vote
1answer
209 views

Apache proxy HTTP CONNECT method handshake failure between Apache server and destination server

Apache/2.2.25 (Win32) mod_ssl/2.2.25 OpenSSL/0.9.8y I'm trying to get the HTTP CONNECT method working with Apache. I'm testing it with two different destination servers. It works fine with one ...
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votes
1answer
23 views

Create a pptp tunnel through a exisiting domain [closed]

I want to create a tunnel (preferably pptp) via a website that I created I am renting a domain from an ISP with a linux os, is it possible to create it?
0
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0answers
103 views

Establish an SSH Tunnel out from behind a firewall

I have a box sat behind a firewall, and when its powered on (or internet connection resumed), I want it to connect to a server, allowing me to do a reverse SSH connection back to it. I'm currently ...
0
votes
1answer
2k views

Transparent Ethernet over GRE not forwarding traffic

I am running on Linux 2.6.30.9 and have been trying to setup a transparent ethernet over GRE tunnel. The network topology used is as follows: I want to bridge PC1 and PC2 using Transparent Ethernet ...
0
votes
1answer
526 views

IP/GRE compiled in kernel but gre0 interface doesnt exist

Im trying to create IP over GRE tunnel but i get No such device: ip tunnel add gre0 mode gre remote 192.168.152.22 local 192.168.152.21 ttl 255 ioctl: No such device I have compiled GRE support in ...
0
votes
1answer
54 views

Can I assign a virtual interface (VPN) to a 'real' interface / NIC of my choice?

I have a small server , running MINT linux with two NICS (eth0 and eth1) and I'd like to setup the MintBox as a VPN client to connect to a web-hosted VPN server. All works wonderfully on the VPN ...
0
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2answers
515 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 ...
1
vote
1answer
92 views

What are my VPN options?

We are changing ISPs and at the last minute the new company is refusing to set up a critical VPN tunnel that we currently have. Data comes into our office via a line into an ISP controlled firewall ...
0
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2answers
3k views

Cisco AnyConnect VPN via OpenVPN tunnel [Unable to modify IP forwarding table]

Background: I'm working as a contractor for a small web design agency. We have a particular project / client requires that any updates / development that are performed are done via VPN. The client VPN ...
0
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0answers
211 views

Using public interfaces on a server connected through a GRE tunnel

I'm pretty new to networking so please forgive any terminology mistakes. I have 2 servers connected with a GRE tunnel. Server1 (10.0.0.1) ----> Server2 (10.0.0.2) I want to be able to bind to the ...
0
votes
1answer
669 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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2answers
150 views

ssh tunnel setup via a gateway, possible?

local -> gateway ( only ssh port enabled ) -> remote I can ssh to gateway then to remote, no problem. Can I establish a ssh tunnel between local and remote via gataway? I 'd like to access ...
0
votes
1answer
117 views

VPN ipsec tunnel from router to single windows server computer (gateway-to-host)

Firstly, is this possible? I haven't seen any posts that talk about this. The situation: 2 different ISP's. One has several servers and a firewall running. The other is limited to only one virtual ...
0
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0answers
119 views

Reverse SSH Tunnel closes after first connection

I am using a reverse SSH tunnel to expose a webserver within my network to the internet. The “inside server” is behind a firewall within a network. The “outside server” is an Ubuntu server with a ...
0
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0answers
43 views

Remote listen to port

I have local server exists inside a corporate local network which is running a web-server at port 8080. I would like to make it available to the internet. But it is inside a local subnet with NAT to ...
5
votes
2answers
790 views

How to Configure Secure Connectivity between Multiple Subnets

I have the following setup 2 x linode vps 1 x lab (physical) running 4 vps My goal is to make it so all nodes act as if they are on the same LAN. This will allow me to alter IPTable rules, to allow ...
1
vote
1answer
2k views

Bluecoat proxy: allow HTTPS access to websites while disallowing TCP tunneling (SSH/…)

We have an explicit (= not transparent) proxy setup using a BlueCoat ProxySG (software 6.4.3.1). When I create Web Access Layer rules like: Protocol: HTTPS -> All HTTPS: Allow, Protocol: All TCP ...
0
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0answers
58 views

Linux + OpenVPN + SNAT + Failure on client grab the reply to it's own generated traffic

Ok, I'm really desesperate I need to release an openvpn deploy to get rid of a dying server. On the subject: I installed OpenVPN with a routed interface (tun0) into a server with a public IP + 3 ...
1
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0answers
110 views

GRE tunnel not allowing Internet

I'm starting with GRE tunneling and I got two machines connected between them-self: tun0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 inet ...
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votes
1answer
6k views

How to tunnel TeamViewer so it will bypass a firewall? [closed]

Sometimes TeamViewer is explicitly blocked by a firewall but as a user you are allowed to establish a VPN connection outside or to open tunnels. The questions is what you are supposed to do in order ...
1
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0answers
84 views

Connecting to IPv6 hosts when mobile and on a Surface?

Specifically, at my usual location, I have an IPv6 network which connects to the Internet via a static tunnel set up to Hurricane Electric's tunnel broker ( http://www.tunnelbroker.net/ ). This works ...
0
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1answer
100 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 ...
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0answers
193 views

GRE Tunneling Routing Issue

I am trying to establish a GRE tunnel on a GW running Linux (V2.6.39.3). The network topology is as following: local: PC_A is connected to a GW PC_A is represented by a dedicated RND (routed ...
0
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0answers
62 views

tunnel two windows or linux server with routing packets

I would like to use IPIP eoip tunnel for windows/linux. In addition, It's not necessary to be IPIP, I want to route connection from server 1 to server 2. You can see following flowchart: ...
0
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1answer
73 views

how ssh knows to proxy the traffic under tunneling?

client <--> local SOCKS proxy <--> remote VPS (SSH) server I wants to know , when the client sends a HTTP request (www.youtube.com) , and the request reached the VPS server through SOCKS proxy ...