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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 ...
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0answers
25 views

Include multiple sub-interfaces in Cisco ASA for VPN tunnel

I am trying to create a VPN tunnel between two Cisco ASAs where one ASA has multiple sub-interfaces. Say, In Cisco ASA 5550, I created multiple subinterfaces with VLAN ID as below: Inside, int0/1 : ...
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1answer
2k 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 ...
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0answers
62 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. ...
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0answers
123 views

DD-WRT/OpenVPN Tunnel Between Two Routers - Block Non-VPN Traffic on vlan1

I have two DD-WRT routers with OpenVPN that I am trying to make a secured tunnel between them. I need them to drop everything that is not going to tap0 on the WAN ports(both of which are set to ...
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1answer
62 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 ...
3
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1answer
63 views

Can I have an alert when a IPSEC is down in Fortigate 80C?

We have a fortigate 80c and 60D with an IPSEC VPN . Is there a way to use the log (or other tool) to send an email alert when the tunnel is down? I couldn't see anything on the Log & Report tab
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2answers
94 views

SSH tunnel (port forwarding) slow down a lot my mysql queries

I'm currently testing some configurations with vagrant (virtual box) to connect 2 servers (VM currently) together throw an SSH tunnel. The goal being to securely connect my web app to the database. ...
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2answers
238 views

reverse ssh tunnel over stunnel (or just reverse back down the stunnel connection)

I'm creating a security "dropbox" that can be deployed behind nat or any firewall, call out to a controlled publicly accessible server and then initiate control from the server. I know this is easily ...
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0answers
39 views

OpenVPN network topology

I'm part of a very small startup and as such I have little money for infrastructure, etc. I need to roll out a OpenVPN service so some employees can VPN in while on-site. To give an indication of ...
0
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1answer
212 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
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1answer
132 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 ...
2
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1answer
282 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 ...
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3answers
77 views

is it possible in this case to get two IPv6 networks to communicate over the IPv4 Internet?

I have a setup of a laptop connected to a cellular IPv4 network (3G usb dongle) and PC connected to another IPv4/IPv6 network. Both have been configured to run as IPv6 routers and each has its IPv6 ...
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1answer
24 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 ...
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0answers
814 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
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1answer
168 views

Routing internet traffic through a site-to-site IPsec tunnel

We are trying to replicate what is described at https://doc.pfsense.org/index.php/Routing_internet_traffic_through_a_site-to-site_IPsec_tunnel#Set_up_the_IPsec_tunnel_Phase_2 We are using 2 ...
0
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1answer
94 views

Connect to soap service via proxy on different ports

I need to connect from a server to a web-service server to consume a SOAP service but due to restrictions in place I cannot connect directly. They did however give me a proxy server that can, but it ...
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2answers
1k views

SSH tunnel doesn't work

I am trying to use my server as a "proxy" with ssh. However, setting up tunneling with ssh -D localhost:8000 user@myserver does not work. I tested this on various machines with ssh and putty - It ...
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3answers
1k 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 ...
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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 ...
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0answers
58 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 ...
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2answers
64 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 ...
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0answers
49 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 ...
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0answers
178 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
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1answer
149 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 ...
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1answer
78 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 ...
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0answers
59 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
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2answers
235 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
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1answer
28 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
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1answer
448 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 ...
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2answers
2k 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
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2answers
95 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 ...
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0answers
590 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
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1answer
110 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
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1answer
292 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 ...
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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
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1answer
323 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
1k 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
58 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 ...
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0answers
70 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
711 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 ...
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0answers
317 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
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1answer
704 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 > ...
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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 ...
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0answers
135 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
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1answer
241 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 ...
2
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1answer
483 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 ...
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1answer
3k 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 ...
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0answers
265 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, ...