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3
votes
2answers
618 views

How to set up a 6in4 / 6to4 tunnel server on a Linux gateway?

I have native IPv6 connection (/64 prefix), and I've been trying to set up IPv6 connection behind a OpenWrt router. But I discovered that I was unable to use ebtables to pass through all IPv6 traffic (...
1
vote
2answers
104 views

IPv6 IPsec between two native IPv6 networks

Assume I have two networks, A and B, on sites either side of the globe. Both have native IPv6 and are using (hypothetically) just IPv6. IPv4 no longer exists. They can both access the internet ...
1
vote
2answers
1k views

How do I know if an openVPN tunnel is established?

How do you know if a Site to site VPN tunnel is established in OpenVPN? Apart from pinging the other side, is there a command or something that shows the status of the tunnel? I am using centos on ...
2
votes
1answer
227 views

How do I set up an ssh -w tunnel VPN between AWS VPC and a Linode?

I'm probably not going to use this for the long term, but I still want to know why this isn't working. I've set up a simple ssh tunnel from my Linode instance to one AWS EC2 instance within my VPC. ...
2
votes
1answer
667 views

How to provide access to lan mysql DB from a remote server?

Consider the below network configuration: A client connects with its workstation to the application server on the Web. The application is full HTML, so only browsing through HTTPS is enough to ...
2
votes
1answer
609 views

Redirect SSH traffic through GRE tunnel

I'm trying to redirect all local connections with destination matchs port 22 to specified tunnel using iptables MARK, but, something is going wrong. 1.1.1.1 my public address 2.2.2.2 tunnel public ...
2
votes
1answer
3k views

How to force certain traffic through GRE tunnel?

Here's what I do. Server (public internet is 222.x.x.x): echo 'net.ipv4.ip_forward=1' >> /etc/sysctl.conf sysctl -p iptunnel add gre1 mode gre local 222.x.x.x remote 115.x.x.x ttl 255 ...
1
vote
1answer
408 views

What do transmit errors on Linux IPsec virtual tunnel interfaces indicate?

Our monitoring system is indicating transmit errors on the IPsec VTIs on our Vyatta Core routers when they are under high load. They only appear fairly occasionally, and don't appear to seriously ...
1
vote
1answer
859 views

Openvpn forward all routing to a socks port

Is it possible to configure openVPN to route all client connections through a socks port? ie, I want the setup to be: Client -> openvpn server -> localhost socks5 port -> socks5 port forward ...
1
vote
1answer
185 views

Configure subversion to start SSH tunnel automatically for HTTP-only SVN server

We have an SVN server accessible with HTTP (and only HTTP) running on a firewalled port on our development system: dev $ svn checkout http://localhost:1234/proj/trunk On my workstation, I created a ...
0
votes
1answer
31 views

Linux vpnc - How to define a specific tunX number in vpnc

I need to start multiple vpnc tunnels and define a different static route for each of individually after setup. To do so I created a script that will run after each connection (tunX) goes up. ...
0
votes
1answer
22 views

How to setup this IPSec VPN?

I have a main network (Net-A), there my work should be done there. On the other network, I have host server where it can reach to Net-A. On the host server, I'll create a couple of virtual machines, ...
0
votes
1answer
576 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 ...
0
votes
1answer
786 views

How can I create routes between two separate LANs on the internet over an OpenVPN tunnel?

Diagram I have separate router/OpenVPN appliances at two different sites. The appliances are actually TP Link routers running OpenWRT 12.09, r36088. I would like clients behind these two routers to ...
0
votes
1answer
479 views

iptables forward port range through OpenVPN

I have a VPN server (the "host" - 10.8.1.1) on a public VPS instance running OpenVPN. The second instance I am running (the "client" - 10.8.1.2) is a local ESXi instance connected to the host vpn ...
0
votes
1answer
271 views

Tunnel HTTP traffic from an EC2 instance to an Heroku Application

We have a web application that runs perfectly on Heroku. However, that application is not available from within a given subnetwork due to firewall restriction on the Heroku IPs. So built a simple EC2 ...
0
votes
1answer
716 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 ...
0
votes
1answer
377 views

ssh tunnel and rdesktop in one line

To access a windows machine remotely I have to tunnel through a ubuntu server of mine. To setup the tunnel I have ssh -l root -C -L 9999:windowsmachine:23389 myserver Then I have to open another ...
-1
votes
1answer
29 views

Need help configuring NAT

First of all, the router I am using is a Cisco WRVS4400N. My company runs a software which handles the MySQL database of all of their products. The software now has an e-commerce module, so I have ...
-1
votes
1answer
870 views

How can i use my local mysqldump through ssh tunnel

I would like to dump a mysql-database with mysqldump. But: This command isn't installed on the remote server. It is possible to use my local mysqldump command, to connect via an ssh tunnel to achieve ...
2
votes
0answers
84 views

Route public subnet to client location

Due to the fact that my ISP introduced CGN/DSLite and I still need public IPv4 addresses, I was thinking about tunneling an unused /29 that I own from my server to my local Linux box. After doing ...
2
votes
0answers
2k views

Site-to-site VPN between Azure Virtual Network and a Cisco RV016

I'm attempting to configure a Cisco RV016 router to connect to an Azure Virtual Network to create a site-to-site VPN, but it's not working. I'm aware that a Cisco RV016 is not in the list of ...
2
votes
0answers
169 views

Dynamic VPN tunneling technologies

Ok, so I'm asking a more specific question this time. I'm writing a paper about Cisco's DMVPN and one of the tasks I have is to make the analysis of available network solutions which use dynamic VPN ...
2
votes
0answers
536 views

Forward IP packets to tunnel device

I have created an tunnel device using ip tuntap add dev tun0 mode tun user 0 group 0 I then assign it an ip address 192.168.0.1/22 ifconfig tun0 192.168.0.1 netmask 255.255.252.0 On my ...
1
vote
0answers
121 views

Ethernet over GRE bridging - Proxmox

I'm trying to install two proxmox on Online.net server's, and I just realized that their RPN feature doesn't work at all like the OVH vRacks. Since I need the different VM's on both hypervisors to be ...
1
vote
0answers
206 views

Build IPv6 over IPv4 tunnel between server and home network

On one side I have an Ubuntu server in a data center that has IPv6 connectivity. The eth0 interface has a public IPv4 and also a public IPv6 /48. From that server I can ping IPv6 addresses OK. On the ...
1
vote
0answers
126 views

Routing IPv6-traffic from client via OpenVPN-server

For playing and learning purpose i set up an OpenVPN-server. Im currently attached to a network without IPv6. Because of that, I would like to route all IPv6-traffic via the VPN. With IPv4 and ...
1
vote
0answers
21 views

graceful tunnel remote change

I want to solve a networking problem: Say I have 3 machine A, B, X in a local-network, where user have access to network resource of X's network interface tunX, which is a tunneled interface connects ...
1
vote
0answers
526 views

Using TomatoUSB and OpenVPN to tunnel IPv6 traffic

Assume the following scenario regarding the current IPv4/OpenVPN setup: Central Site with a /64 IPv6 (10.0.0.1) | | OpenVPN Server A OpenVPN Server B ...
1
vote
0answers
906 views

why ping6 fails if tcpdump shows ICMP6 request/reply traffic?

I'm having a very strange problem with IPv6 pings on OpenWRT (fon-ng firmware with IPv6 enabled) and hoping someone can help with investigation. In short - wpan0 interface with address aaaa::1/64 is ...
0
votes
0answers
26 views

How to use icmptx?

in trusty (ubuntu 14.04, both sides) i want to create an icmp tunnel. i don't know how to set ip's. i searched and read some documents like [this]: http://thomer.com/icmptx and [this]: http://null-...
0
votes
0answers
76 views

How to make a tunnel connection behind NAT with iptunnel/netcat?

How can I create an IP tunnel to a server on the internet with a device that is firewalled behind a NAT? I need to do this using only the commands iptunnel or nc. I'm not controlling the NAT router. ...
0
votes
0answers
28 views

6in4 Tunnel with /80 Addresses

I want to setup my own 6in4 tunnel server on CentOS 7, my VPS ISP can only provide a /80 IPv6 block addresses while I can see most of tutorials said it requires /64 for client's DHCP server to work. ...
0
votes
0answers
28 views

multi gre tunnels to one IP

I have an issue with GRE tunnels after connecting multi-GRE tunnels with different IP's to the server, using this tutorial: http://wiki.buyvm.net/doku.php/gre_tunnel every GRE tunnel has interface ...
0
votes
0answers
81 views

Configure ipv6 to ipv4 tunnelbroker under linux

I'm running arch linux, with a ipv4 only ISP. I want to test how good my servers work with ipv6, especially my websites. So I set up an account at tunnelbroker.net (hurricane electric) and created a ...
0
votes
0answers
405 views

Windows 2008 R2 site-to-site IPSEC tunnel with Juniper: tunnel up but packets are lost

I am stuck on this task almost for 2 days. Organized a site-to-site IPSEC tunnel between Juniper and Windows2008R2 machine (let's call it W2008R2 for reference). W2008R2 is a multihomed machine (2 ...
0
votes
0answers
143 views

NAT answers instead of remote host

Currently I have VPN client access set up on OpenSuSE 13.1 server to third-party remote Cisco VPN IPSec server. VPN Server is set up to provide access for a host only and to provide access for a local ...
0
votes
0answers
1k views

IPSec tunnel not working when set up asynchronously

I'm trying to create a tunnel using StrongSwan. In order to do this, I'm creating two sh files, one for each gateway router. All I'm doing in the sh files is creating the tunnel, configuring it, and ...
0
votes
0answers
265 views

Why isn't my SSH tunnel working?

The SVN server at my work has been moved to a different machine. This wouldn't present a problem except that the firewall rules have not been set up properly and I'm unable to connect to the new ...