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5
votes
3answers
455 views

Copy data through SSH tunnel over multiple hops

We have two main environments in question: Development and QA Each environment has two servers: Jump Box Application server In order to connect to the application server, you must connect to the ...
-1
votes
1answer
18 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
votes
1answer
857 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 ...
0
votes
1answer
823 views

AWS VPN Tunnel going down without traffic

I managed to setup a site-to-site VPN connection from Amazon VPC to a company's network, and after a lot of configuration it was working fine, but now i realized that the VPN tunnel is DOWN every time ...
0
votes
0answers
56 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 ...
1
vote
0answers
50 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 ...
0
votes
2answers
52 views

How do I connect to Windows Desktops from a Linux Server? [closed]

I have system A on a network connected to the Internet, another system B on a different place (different location also). I have a VPS server with SSH connectivity. Both A and B are Windows, and the ...
0
votes
0answers
14 views

Problems on using KVM Guest as router

We have two private subnets on different locations BJ and SH. in BJ, subnet is 10.1.0.0/16 in SH, subnet is 10.2.0.0/16 We want them connected, so we build a tunnel through public internet using ...
0
votes
0answers
64 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 ...
1
vote
1answer
129 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 ...
-1
votes
1answer
27 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 ...
0
votes
0answers
41 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 ...
3
votes
2answers
148 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 ...
0
votes
1answer
21 views

What is the best way to create remote tunnel?

I have 3 Linux servers: - 10.0.0.0/24 - (10.0.0.10) Linux server inside my LAN. - 20.0.0.0/24 - (20.0.0.10) Linux server with HTTP Apache server - 50.50.50.50/32 - Server on Amazon AWS which see both ...
1
vote
1answer
137 views

WCCP and Squid, and Tunnels

I'm trying to configure WCCP + Squid with the following documentation: http://www.crypt.gen.nz/papers/cisco_squid_wccp.html I have a cisco switch, a test client, and a squid proxy server. I think ...
2
votes
2answers
1k views

Correct options for keeping open a reverse SSH-tunnel using autossh

I have a set-up with a LDAP-sever (ldapserver) behind a strict firewall, and a webapplication running on a sever (appserver) outside that firewall that needs to authenticate using that LDAP-sever. I ...
0
votes
2answers
87 views

Encrypted off-site data storage

My business has a rather unique problem. We work in China and we want to implement a file server paradigm which does not store any files locally, but rather in a server overseas. Applications would be ...
1
vote
0answers
493 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
1answer
67 views

How is my GRE-Tunneled packet being routed? [closed]

I'm trying to figure out exactly what is happening when I create a GRE tunnel. My network looks like this (-> means directly connected): Computer A (eth0: 10.0.1.1) -> (eth0: 10.0.1.2) Router B ...
2
votes
1answer
44 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 ...
1
vote
2answers
2k views

Tunneling a public IP to a remote machine

I have a Linux server A with a block of 5 public IP addresses, 8.8.8.122/29. Currently, 8.8.8.122 is assigned to eth0, and 8.8.8.123 is assigned to eth0:1. I have another Linux machine B in a remote ...
0
votes
1answer
107 views

How to have ssh tunnel prompt for username & password

We have an windows desktop application that connects to a 3rd party server with a socket connection. The 3rd-party server requires that we connect from a fixed public IP address. We need to connect ...
2
votes
2answers
652 views

Cannot run OpenVPN on port 53 (DNS Stops Working)

So I'm trying to get OpenVPN to work on port 53 - sadly this isn't working. I used IP tables to map port 53 to port 1194 (standard OpenVPN port) Here's what I run to do this: iptables -t nat -A ...
1
vote
1answer
42 views

Connect two mac computers/servers using a tunnel or private VPN? [closed]

I've got software I need to run on two computers on two separate networks (one behind a nat). The software requires both sides to have a static ip address that doesnt change. I assume some sort of ...
1
vote
0answers
68 views

VPN/tunneling/proxy service for devices in the field

I'm trying this question here, but if there's a better stack exchange or somewhere else that's more appropriate, please let me know. Thanks! We have a number of devices in the field in corporate ...
2
votes
1answer
275 views

L2TP/IPsec through HTTP Port 80

i got an VPN (L2TP/IPsec) Tunnel running on my synology nas. my router is configured for vpn passthrough. so everything is fine. furthermore i got an webservice running on port 80. now i got the ...
0
votes
0answers
194 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
1answer
229 views

How to work around an uncooperative HTTP Proxy?

I am trying to set up a OpenVPN tunnel and I'm getting this error on the server side: Wed Dec 11 13:34:24 2013 us=454625 WARNING: Bad encapsulated packet length from peer (18245), which must be > ...
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 ...
0
votes
0answers
84 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 ...
1
vote
1answer
187 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
266 views

SSH connection refused on an unusual port

Using AWS EC2 Reverse SSH tunnel initiated from a remote machine to AWS: /usr/bin/autossh -M 0 -N -R 19999:localhost:22 ec2-user@ec2.aws.com -v -i cloud.pem Added port 19999 in AWS security ...
1
vote
1answer
2k views

How do i route TCP connections via TOR? [closed]

I was reading about torchat which is essentially an anonymous chat program. It sounded cool so i wanted to experiment with making my own. First i wrote a test to grab a webpage using Http. Sicne .NET ...
0
votes
0answers
187 views

Socksify TCP connections reaching a gateway IP — preferably without iptables

I have Virtualbox installed on Debian with a few virtual machines. I can't install anything in the guests, and I use host only networking, vboxnet0. The host IP in the host network is 192.168.56.1, ...
0
votes
0answers
191 views

Fortigate Virtual - Policy route to GRE tunnel

I am currently trying to test the Fortigate VM to forward traffic on port 80 to the GRE tunnel. There seems to be problem with the Policy Route. When I select source and destination only port 80, I ...
0
votes
1answer
117 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 ...
-1
votes
2answers
169 views

Forwarding the endpoint (at localhost) of an SSH -L tunnel to another machine

Even after long searching and trying I'm not able to solve the following puzzle: Client A --------------------------> Server B (172.26.15.15/24) ssh -L 4321:localhost:4321 Server C ...
0
votes
3answers
117 views

Tunneling ports through different routes without the knowing of the local programs

I need to set up the following scheme: server1: Generic program connects locally to proxy, which then connects to proxy to server2. Everything is ok, until the connection between the servers. ...
1
vote
1answer
176 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 ...
0
votes
1answer
422 views

What are the IPsec parameters for connecting VShield Edge?

I'm trying to connect a vyatta-VM to a VMware VShield Edge, but can't get it working. VShield Edge allows me to set encryption (to AES256) and displays DH-group 2. That's all i know. If i put these ...
1
vote
1answer
149 views

Fail safe SSH tunnel Ubuntu (always up)

I need your advise for a very important technical issue on our project. We need to have a SSH tunnel always up between our two servers. We have a MySQL database replication process going between those ...
0
votes
2answers
210 views

autossh -> private key without passphrase

I would like to tunnel a mysql database. So I thought I use a private key without a passphrase to make it reboot friendly. The problem is, openssh still asks me for a passphrase and if I leave it ...
2
votes
0answers
152 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 ...
0
votes
1answer
2k views

Routing traffic through IPSec with NAT and IP Alias in pfSense

I have a pfSense firewall and I need to connect to a remote site (form my client). I'm running into several issues, and don't see traffic flowing in any way. Here's my setup: LAN is 192.168.0.0/16 ...
0
votes
1answer
39 views

SSH tunnel issues since setting up public key login

I'm trying to create an SSH tunnel using the command: ssh -L 3307:127.0.0.1:3306 remoteserver Previously, I had not set up public/private key login (for passwordless login). Using this command ...
1
vote
1answer
1k views

Connecting to MYSQL over SSH tunnel

I can ssh onto the remote server and login without a problem. I'm trying to connect to a remote mysql db over a ssh tunnel and running into issues. I've created the tunnel successfully (verified by ...
0
votes
1answer
186 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 ...
2
votes
0answers
590 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 ...
0
votes
1answer
359 views

VPN laptop as proxy gateway for Intranet computers truss bridge/bypass

I have a Windows 7 Enterprise VPN laptop to access my client's VPN network. During VPN session the laptop can not accept any request from my Intranet even if I open any door using Windows Firewall ...
1
vote
1answer
387 views

Managing multiple servers behind a firewall with SSH reverse tunnel

I have 10 Ubuntu servers in different locations, behind a firewall each (local_server_1 to 10). All those servers are authorized to SSH into my public server (lets call it master) using ssh keys (in ...