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2
votes
3answers
2k views

Squid traffic tunneled through VPN

So what I'm trying to do is have a Squid Proxy run on 1 machine along side a VPN connection. What I want to happen is all traffic running though the Squad Proxy would run though the VPN for its ...
1
vote
1answer
50 views

OpenVPN: Traffic Redirection not Working

tl;dr (after hours of debugging with @krisFR): At least under Debian 8, never use virtual interfaces (eth0:1) for OpenVPN, instead apply the new debian iproute2 methods (manual approach) described ...
0
votes
2answers
304 views

How could I send HTTP traffic from a computer only accesible via Remote Desktop?

I'm developing a Web Service Client. The Web Service is an special Government service only accessible from an internal network. Currently, I'm working connected to a remote computer in this internal ...
0
votes
0answers
24 views

SSH traffic forwarding in Linux kernel [closed]

This is just a question for discussion. I've found that many users usually use SSH only as a tunneling protocol. It is very useful when you are going to mask your network traffic in SSH traffic to ...
0
votes
2answers
3k 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
1answer
1k views

Vpn tunnel to Amazon VPC with pfsense

I'm trying to create an ipsec tunnel between my office and our Amazon VPC. However I have never used ipsec before so I'm at lost. The gateway/firewall is running pfsense 2.1.3-RELEASE (i386) on ...
-1
votes
1answer
23 views

What is the bind address used for when forwarding a port via SSH?

I have a brief understanding of port forwarding via SSH. So let's say I have a VNC server up and running at port 5901. I pick up my laptop, go to work, then I want to connect to my server, but I want ...
1
vote
3answers
325 views

Another SSH Tunneling question

Here's the Diagram Server A ----> Server B <----- Laptop So basically Server A and Laptop can connect to Server B directly but you can't establish a connection from Server A to Laptop directly, ...
0
votes
0answers
20 views

SSH tunnel seems to be bound to multiple IPs

I am using a SSH tunnel to a remote machine using plink.exe in Putty on Windows 8. I am also running a web application using the same port. So to avoid any port conflicts I have bound the tunnel to ...
0
votes
1answer
1k views

Gre Tunnel Cisco Linux traffic forwarding

I setup a gre tunnel a cisco router and a Linux machine, the tunnel interface in the Linux box named pic. Well i have to forward traffic coming from cisco through the Linux box. the rules i've set in ...
1
vote
1answer
47 views

process group A default route tun0, B default route tun1, etc

I have a Linux box with N tunnel interfaces, tun0, tun1, and so on. I want to set things up so that a particular group of processes, A, has its default (and only) route pointed at tun0. Meanwhile, a ...
0
votes
0answers
21 views

It is possible to make an IPSEC VPN Bonding?

I wanted to know if It is possible to bound two IPSEC tunnels ? I've already done a VPN bonding of SSH tunnels, but It will be better if I use IPSEC.
2
votes
2answers
6k views

Cisco ASA VPN - Route all internet traffic from remote site through main site's ISP

I have a situation with two locations connected via site-to-site VPN. Site A has a web filtering appliance. I'd like to route all traffic from Site B over the VPN tunnel and out of Site A's internet ...
2
votes
4answers
7k views

How to setup an IPSec / GRE tunnel on Windows Server 2008

I have a Windows Server 2008 that has a single network interface configured with a public IP address. My business partner has a private network. From my server, I need to access all the devices on his ...
7
votes
4answers
1k views

Automatically-reconnecting TCP tunnel

I have an unreliable network connection between two machines: sometimes active TCP connections get dropped for reasons beyond my control. I want to establish a reliable TCP connection between the two ...
0
votes
1answer
34 views

Windows translate external IPv6 to localhost IPv4

I have a machine running Windows server 2012, whose external IPv6 address is "2a01:4f8:190:7449::4". Let's assume it has no external IPv4 address, so the v6 address is the only way of accessing it ...
4
votes
3answers
153 views

Make reachable via a fixed address (e.g. IPv6) a server that is actually connected via a variable IPv4 adress?

Need: Internet host at a fixed IP address for full-stack self-hosting People want to perform self-hosting in an area where no ISP provide sufficient service with a fixed IP address. They provide one ...
1
vote
0answers
69 views

Make lan ip's available to external devices over openvpn [closed]

My goal is to make my home media library available to external devices. External device ====== OpenVPN Server ====== unknown Modem ----- OpenWRT --- lan machines External devices are OpenVPN ...
3
votes
2answers
274 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
0answers
33 views

OpenVPN tunnel not able to support secure connect request

In CentOS 7 host we have installed openvpn package and did create an tunnel using OpenVPN tunneling for eth9 and tap9. Everthing work fine for unsecure connection but when we try to connect to server ...
0
votes
0answers
54 views

Routing VPN traffic between two networks

I have recently set up a two-network bridge using OpenVPN (Connect two networks with OpenVPN) The following things work: -Pinging any Network 2 computers from Network 1 Gateway (10.0.1.9) -Pinging ...
0
votes
2answers
301 views

Connect two networks with OpenVPN

I am trying to connect two networks together via OpenVPN. Gateways can ping each other, however they cannot access other computers on the network they're joining. Logs don't show any errors, and the ...
2
votes
1answer
222 views

Multicraft: Port Forwarding through a GRE Tunnel

For the past week I've been attempting to protect a server from DOS attacks by utilizing a GRE tunnel from a VPS to a dedicated machine without much success. Visual: User --> VPS --> Dedicated ...
0
votes
1answer
47 views

Stretched LAN over OpenVPN

I'm trying to achieve the following but can't find the right information. I have a Windows server box in a datacenter which has only a WAN connection that I want to integrate in an existing LAN at ...
0
votes
0answers
49 views

GRE Tunnel Collapsing in One Direction

This is a related question to another thread I posted. I'm having an issue where my GRE tunnel is collapsing in one direction, but can be reopened by ping the other server using the GRE Interface. ...
0
votes
1answer
55 views

closing ssh tunnel when using connection sharing without killing ssh?

I typically use ssh with connection sharing enabled; this causes any ssh tunnels I create subsequent to the initial ssh login to use that connection. Is it possible to close an ssh tunnel without ...
0
votes
0answers
42 views

How to terminate any ip/ip tunnel which has this host as destination

I am in a situation where I want to terminate any tunnels at one device. I.e. I want to be able to create a tunnel to this device from any source ip adress. Something which can inspect a packet, see ...
1
vote
1answer
117 views

How to use same MPLS Traffic Engineering tunnel for ipv4 and ipv6

I have MPLS TE configured and working, but it is currently using IPV4 and I needed to include IPV6. My current tunnel configuration is the following: interface Tunnel1 ip unnumbered Loopback0 ipv6 ...
1
vote
1answer
1k 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). ...
1
vote
1answer
3k 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 ...
1
vote
0answers
511 views

Cannot make TCP Connection with OpenVPN Server

Client OpenVPN assigned IP: 10.8.0.2 โ†“ TCP on 1194 Internet โ†“ Router port-forwards 1194 to server- Public IP 104.162.67.198 โ†“ Server LAN IP: 10.8.0.1 I think the above is what I am trying ...
0
votes
1answer
213 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 ...
1
vote
1answer
72 views

Ip-in-Ip tunnel not working — Packets not being decapsulated

I am trying to forward packets from HostA to HostB using ip-in-ip tunneling. While packets are reaching their destination, they are not being decapsulated by the receiving host, and thus being dropped ...
0
votes
2answers
502 views

Static IPv4 tunnel with Windows Server 2008

Is it possible to create any sort of plain (IPv4, non-ipsec) static tunnel interface using only components of Windows server? Any protocol will do as long as there is reasonable linux support for the ...
30
votes
5answers
22k views

What are the exact protocol level differences between SSL and TLS?

This is a technical deep dive after this overview question was asked. What are the protocol differences between SSL and TLS? Is there really enough of a difference to warrant a name change? (versus ...
0
votes
0answers
155 views

Debian forward through NAT EOIP GRE

eth0 = WAN eth1 = LAN to forward any port through nat I use e.g: iptables -t nat -A PREROUTING -p tcp -d 79.188.31.34 --dport 8291 -j DNAT --to-destination 192.168.0.36:8291 and it works, but ...
0
votes
0answers
17 views

Encapsulating VPN tunnels on Linux

I'm playing with python and networking and I want to write a program that allows me to select one of several VPN connections and encaspulate them within each other. That is to say, if I have VPN-A, ...
0
votes
0answers
50 views

Can I terminate an SSL Tunnel at the Load Balancer in Amazon VPC?

In other words, can the Amazon VPC load balancer be configured as an SSL Host? As a proof of concept, we've created this setup: Heroku Appserver <---> VPC Load Balancer <---> Ubuntu SSL ...
1
vote
1answer
319 views

Debian don't forward through L2TPv3 more than mtu l2tp virtual interface

R3--R1--Internet--R90 R3: ip addr 10.123.0.3 R1: sudo ip l2tp add tunnel tunnel_id 699 peer_tunnel_id 699 encap udp local 5.254.174.8 remote 5.254.174.90 udp_sport 699 udp_dport 699 sudo ip l2tp add ...
3
votes
1answer
104 views

Can I use something like a tunnel for SSH in this Linux/Windows Remote Desktop scenario?

I have a Linux server (call it server-L) which i cannot directly ssh to it. In order to ssh it i should connect to a windows server(call it server-W) and then make ssh connection from it to my Linux ...
2
votes
1answer
864 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
votes
1answer
123 views

How can I bridge a VM to a remote network?

I have a system running QEMU/KVM (via libvirt). One of its VMs needs to have a presence on a subnet that is not local to the VM host. I have a Linux system on the remote subnet. Is there a way to ...
0
votes
2answers
2k 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 ...
0
votes
0answers
192 views

Redirecting traffic through ssh tunnel

I'm trying to redirect the traffic coming from clients to external proxy server. I've the following architecture +----------------------------+ ...
-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 ...
0
votes
0answers
403 views

ssh reverse tunnel port forwarding connection fails

Updated: diagram http://s22.postimg.org/b2jfgawup/diagram_ssh_tunnel_a1.png I am able to do a reverse port forwarding through the PUTTY GUI with settings similar to below. once I apply this setting, ...
0
votes
1answer
80 views

Tunnel http requests to another server?

I have a VPS we'll call it mydomain.com Is it possible when someone goes to mydomain.com, the request is forwarded to another different server, let's say 192.168.0.5 processed by that server and then ...
1
vote
0answers
133 views

HTTP CONNECT request body is reduced to / when proxying through Apache

I am using Apache 2.2.15 as a reverse-proxy running on Scientific Linux 6. It is being used to connect an application to a remote server, where the application being connected to requires that the ...
0
votes
0answers
92 views

Listening “through” GRE Tunnel

Currently I'm looking to learn about using GRE Tunnels and I have the following scheme: Server1 (200.1.2.3) ----> Server2 (190.1.2.3) Both servers have public IPs Then I've setup a GRE Tunnel with ...
1
vote
3answers
592 views

IPv6-only client to IPv6/IPv4 dual stack server tunnel?

I have a IPv6-only client and a IPv6/IPv4 dual-stack server. The client can connect to the server via IPv6. I want to set up a tunnel on the server so the client can access IPv4 resources through the ...