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6 views

ebtables arp filtering with openvpn tap interface

I want to prevent arp traffic not destined for the remote side going through a openvpn tunnel so I filter arp requests going to none of my own IPs. Server Setup: /etc/network/interfaces auto br0 ...
2
votes
1answer
2k 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 ...
2
votes
1answer
88 views
+50

Windows Server FIrewall (2012) Ipsec tunnel problems

I am new to Ipsec tunnels. I have successfully created a tunnel to a Cisco offsite router using a preshare key at a supplier. In Endpoints 1 : I have the servers ip address and the remote servers ip ...
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0answers
25 views

IPSec tunnel through ASA from specific IPs

I'm having some difficulty getting an IPSec tunnel to work through an ASA5510 that is already configured with a number of different tunnels that it terminates, as well as individual VPN clients. ...
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0answers
18 views

GRE Tunnel to Add IPs

Okay, here's the situation: server1 - my "main server" server2 - think of it like a proxy IP1 - main IP of server1 IP2 - main IP of server2 IP3 - additional IP of server2 I have, for years and ...
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2answers
3k 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
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0answers
15 views

server behind cisco tunnel, some windows clients can't connect

I have the following scenario: I have a ubuntu 14.04 linux server with apache web server and samba the servers network is 192.168.1.0 I am accessing the server from a remote site (site's network ...
1
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1answer
27 views

VPN Tunnel Migration

I need to do a VPN tunnel migration from 1 Cisco Asa to another one on 20 remote routers. I wrote a little script that can automaticaly migrate the routers to the new ASA. However, when I run this ...
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0answers
22 views

Add FQDN name in gre tunnel in Linux

Since aruba, cisco, etc all support add FQDN as gre tunnel's endpoint, can I do the same thing in linux via iproute2 or something else? Now, when I type a FQDN at ip tunnel, it just says that it's ...
1
vote
1answer
36 views

Using two openvpn clients to expose services of a server

I am currently attempting to use two openvpn clients to expose services of a server, as is already said in the title. I may be playing with powers far beyond my current comprehension, but please bear ...
0
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0answers
47 views

Set up a GRE tunnel over multiple communication channels

I am in a situation where I would like to be able to set up a GRE tunnel running seamlessly over GPRS or Wifi in linux 2.6, preferring of course Wifi whenever available. So on one host I have two ...
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0answers
110 views

IPSec tunnel between Cisco and openswan

We need to setup a site to site vpn connection and Our provider use Cisco system and we are planing to use openswan on centos (hosted on digitalocean). Our provider asking us following information. ...
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2answers
2k views

stunnel version 4.53 says SSL server needs a certificate on Windows 7

I have been using stunnel previous versions just fine. It didn't apparently have the feature of a certificate in SSL server mode. That's alright but not necessary for us as we're simply running a ...
2
votes
3answers
2k 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 ...
1
vote
1answer
141 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
175 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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0answers
404 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 ...
0
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1answer
281 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
votes
1answer
503 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
2
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2answers
849 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. ...
2
votes
2answers
969 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 ...
0
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0answers
54 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
330 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
461 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
1k 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
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3answers
126 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
26 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 ...
2
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0answers
1k 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
831 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
votes
1answer
372 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 ...
7
votes
3answers
3k 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
40 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
64 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
65 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
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0answers
277 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
163 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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votes
1answer
245 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
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0answers
93 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
397 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
44 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
795 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 ...
3
votes
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
votes
2answers
99 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
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0answers
707 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
156 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
544 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
2answers
3k 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
591 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
90 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 ...