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1
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1answer
47 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
vote
1answer
31 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
votes
0answers
17 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
votes
0answers
18 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
vote
1answer
79 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
votes
4answers
76 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
35 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 ...
-3
votes
1answer
19 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
votes
0answers
48 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
362 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
95 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
30 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
votes
2answers
145 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
89 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
votes
2answers
713 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
votes
0answers
153 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
308 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
votes
2answers
62 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
59 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
votes
0answers
89 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
votes
0answers
27 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
413 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
527 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
votes
0answers
41 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 ...
0
votes
0answers
19 views

with httptunnel, given port on the remote (server) host is to be forwarded to the given host and port on the local side

Is it possible somehow to use httptunnel to achieve the following, but replacing ssh by http? > ssh -N -R 8080:localhost:1080 mylogin@server.com -R [bind_address:]port:host:hostport Specifies ...
1
vote
0answers
67 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 ...
-6
votes
1answer
2k 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
vote
0answers
76 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
votes
1answer
74 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 ...
1
vote
0answers
103 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
votes
0answers
38 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
votes
1answer
67 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 ...
0
votes
1answer
164 views

How to troubleshoot GRE tunnel issues?

I commonly run into issues where a GRE tunnel (CentOS server to server, not router based) works and pings fine from both ends but the IP / Range being tunneled does not function. This almost always ...
1
vote
2answers
300 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 ...
0
votes
1answer
187 views

Forwarding SNMP ports over SSH

I access my work network through a VPN and have access to every host in there through SSH. Currently I need to access around 3000 hosts via SNMP, but corporate sec policies restrict SNMP access ...
0
votes
1answer
396 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 ...
1
vote
2answers
196 views

What is the difference between SSH and SSH Tunneling

As the title says, I don't really understand the difference between them. For example, if I connect to a specific server through SSH without tunneling I get the same shell as I get with tunneling.
2
votes
2answers
1k 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: ...
0
votes
1answer
156 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
742 views

why is stunnel doing this

I am trying to setup stunnel to encrypt traffic from rsyslog (using the relp protocol), but whenever I try starting stunnel and sending logs to the remote server, i get the following: Remote ...
2
votes
1answer
331 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 ...
1
vote
1answer
2k views

SSH tunneling with Synology

I try to tunnel SMB and AFP services through SSH to acces my NAS shares on my machine. I already do it successfully with my ReadyNAS using the following command line (ran as my user on my mac) : ssh ...
0
votes
1answer
73 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
-2
votes
1answer
368 views

How to make a tun interface with ifconfig in OSX? [closed]

If I try to do this I get the following: bash-3.2# ifconfig tun0 10.140.1.40 ifconfig: ioctl (SIOCAIFADDR): Destination address required It sounds like this doesn't happen in Linux (probably this ...
3
votes
1answer
84 views

secure connections between vps servers

I have four VPS servers. Two of them are replicated glusterfs server and the other two are glusterfs clients. What I want to do is to encrypt all communications between glusterfs servers and between ...
4
votes
2answers
411 views

How to link multiple SSH tunnels together in Linux

I have the following situation: A -----|------ B -----|------ Work Work can SSH into B, and A can SSH into B, but apart from that everything is firewalled. What I would like to do is in effect ...
1
vote
1answer
328 views

Ssh socks server doesn't work [closed]

I want setup socks server on my localhost which forward all http traffic on my remote server for bypass firewall rules at my work net. And so I start it as usually sudo ssh -C2qTnN -D localhost:8080 ...
3
votes
2answers
174 views

IPv6 tunnel broker setup

I'm working on a solution to allow remote Linux nodes that are behind firewalls to be accessible for SSH and web server. Can anyone suggest an IPv6 tunnel scheme that would work with NAT firewalls? ...
0
votes
1answer
2k views

Trouble with site-to-site OpenVPN & pfSense not passing traffic

I'm trying to get an OpenVPN tunnel going on pfSense 1.2.3-RELEASE running on embedded routers. I have a local LAN 10.34.43.0/254. The remote LAN is 10.200.1.0/24. The local pfSense is configured as ...
2
votes
1answer
1k 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 ...