Questions about using a router/networking, e.g. port forwarding, VPNs

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61
votes
11answers
67k views

How can I make the Windows VPN route selective traffic (by destination network)?

I want to use a Windows VPN but only for a particular network, so that it doesn't take over my entire network connection. e.g., Instead of the VPN becoming the default route, make it only the route ...
7
votes
2answers
3k views

How does the router know which device to send packets to? [duplicate]

my question does not concern how it moves through the internet, but how it moves through the router to a certain device. All devices connected to a router in a home network have the same external IP. ...
2
votes
1answer
1k views

Connecting to my own network via external IP

Even though I have seen and read quite a few similar Q's I was still unable to understand what is required for me to be able to do this. I have an internal network. One of the machines is a web ...
15
votes
2answers
5k views

How do you get loopback addresses other than 127.0.0.1 to work on OS X

According to everything I read, the entire 127.x.x.x subnet should loopback. However, on my Mac, I can only ping 127.0.0.1 I know I've done this before (though possibly on another OS) and has come ...
6
votes
4answers
26k views

When a PC has both a wired and a wireless connection, how is information transferred?

My PC has two connections (wireless and wired) simultaneously. Both of them have an internet connection. In this situation, how does it connect to the internet? How do my LAN and WLAN interfaces know ...
22
votes
5answers
19k views

How to force split tunnel routing on Mac to a Cisco VPN

Any one know how to hack the routing table (on a mac) to defeat the forcing of VPN routing for every thing over a cisco VPN? pretty much what I want to do is have only 10.121.* and 10.122.* addresses ...
7
votes
2answers
40k views

Windows 7: how can I add an IP range in the “route” command?

I'm using two network connections, and I tried using the "route" command so that when I access a specific internal IP on my LAN, it would use connection 1, anything else would go normally through ...
10
votes
3answers
42k views

How to route only specific subnet (source ip) to a particular interface?

How to route only specific subnet (source ip) to a particular interface? OS: Linux I know I can do easily by destination IP by using something like route add 1.2.3.4/24 dev eth4 but I do not ...
15
votes
5answers
37k views

How to tell Windows 7 to ignore a default gateway

I currently have 2 network cards in my PC -- one connected to an internal network on a router with a disconnected WAN port (10.x.x.x), and one connected to the internet through a consumer router ...
15
votes
5answers
27k views

Access internal IP using public IP

I have a DSL modem with a public IP address (201.206.x.x), and I have a web server in my internal network (192.168.0.50). I set up the modem to forward requests to port 80 to my web server, so, if I ...
5
votes
1answer
8k views

Problem with persistent routes and VPN connection in Windows 7

My home PC has a VPN connection to my office. The office network is firewalled, with a secure zone on 192.168.0.* and a DMZ on 10.0.0.* From outside, www.mycompany.com routes to a public IP - say ...
5
votes
4answers
29k views

Rerouting local LAN and Internet traffic when in VPN

I'm connecting to a VPN which doesn't allow split tunneling and basically reroutes my Internet traffic through, which is slow. Additionally and more importantly, this also effectively removes my ...
5
votes
2answers
3k views

How to route traffic to website using a specified network connection on Windows 7?

I want to route all traffic to a website over my wireless connection while the rest of the traffic using my lan. What I tried was first finding out the IP address of the website I want to go to. For ...
4
votes
3answers
435 views

Is there any alternative to virtualization for handling two different interfaces, different networks and same IP range?

I have a Linux box with two different NICs that are connected to two different networks, but they share the same IP range (10.0.0.x). My first idea was to use virtualization for that (i.e., Xen), but ...
2
votes
1answer
2k views

Changing routing on Mac with two Ethernet ports

I have a Mac tower which has two Ethernet ports. One is connected to our corporate network, the other to a non-corporate network. Priority order states that the non-corporate network comes first and ...
6
votes
4answers
8k views

How to set up application-specific routing table on Windows?

Suppose network interface 1 (net1) and 2 (net2) are both connected to the Internet. I want application 1 (app1) to use net1, and application 2 (app2) to use net2. How can it be done under Windows? If ...
3
votes
2answers
669 views

Routing network traffic on Windows Vista

I have two network adapters. One is connected to a 3g-router and the second network adapter is connected to the local network. I want to route all traffic on specific ip-addresses/hosts to the ...
2
votes
2answers
2k views

Mac OS X traceroute not even reaching router gateway

I'm having an issue on a Macbook Pro running Mac OS X 10.5, I'm unable to visit certain websites such as: "themarchesa.com" On other computers in the same LAN network connected over wifi I'm able to ...
1
vote
2answers
2k views

private address in traceroute results

I SSH into a remote host 194.199.68.165 and then use traceroute to check paths to 132.227.62.122 , and I notice that there are some private IPs, like 10.230.10.1 bash-4.0# traceroute -T ...
3
votes
3answers
2k views

Custom route table for a specific application?

I'm on a network with two internet connections. One is a WAN access to a corporate network (with custom firewall rules), the second is a direct internet connection. By default, all communications are ...
2
votes
3answers
6k views

ssh - no route to host

I have 3 machines (A, B and C) behind WLAN Router. From B i can make ssh to A and from A to B also. Ssh between C and A is also working (both destination, C->A and A->C). But when i try to connect B ...
1
vote
5answers
820 views

Basic routing table for LAN IP

I know some of you may have CCNA / networking experience, so I hope that you can answer the following question for me. How does an industry standard router handle local IP's, with two connected ...
1
vote
3answers
858 views

Usage of Dual Ethernet Jacks (One for LAN, One for WAN)

I'm working on an old Mac PowerPC G5 that has two Ethernet jacks. I'm interested in finding a way to have both jacks setup so that all internal traffic (all traffic to and from a specific IP address ...
0
votes
1answer
162 views

What's wrong with my local network and router?

My PC access internet is very slow and I find the router info is very strange: The DHCP clients, 1 pc-PC E8-11-32-8C-0C-3A 192.168.1.110 01:53:11 2 WIN7U-20130403J ...
0
votes
2answers
85 views

Linux: Any distro-independent way to change and persist IP settings?

Are there any distribution-independent mechanisms for tasks like assigning static IP addresses, adding or deleting routes, etc and, then, also be able to persist the changes so made? AFAIK, each ...
0
votes
1answer
1k views

How to add Public (External) IP Addresses to my private network (windows domain controller)

I have set up a private domain network at home. I have a domain controller, a DNS server, and a DHCP server all running on one Windows 2003 Server machine. I have about 10 other machines around the ...
12
votes
4answers
14k views

How do I setup Ubuntu/Linux's Network manager to selectively route network traffic through the VPN?

I'm using Ubuntu 9.04 and I just noticed that ALL of my network traffic is being routed through my VPN. I would like the VPN to route only the traffic hitting servers on the VPN and then connect ...
6
votes
5answers
9k views

How do IP answer packets reach their destination inside of a private LAN?

This is a little theory question that has been confusing me for a pretty long time. Basically, if we are inside of a private LAN, and we want incoming packets to reach, for example, an HTTP server ...
6
votes
1answer
6k views

Routing traffic to specific web sites through Ethernet, rest via wifi on Mac OS X 10.6?

I have two separate Internet connections connected to a Mac and I'd like one of them (via Ethernet en0 gateway) to serve for just backing up to an remote online storage, and the other one (via Airport ...
4
votes
2answers
2k views

Linux routing and HMA

My setup is the following: I have an ssh access to a distant machine, running the last version of Ubuntu Server edition, and I have to run a software on it "through" HideMyAss VPN (because this ...
27
votes
5answers
3k views

How do I tell Windows to use 802.11 in preference to 3G?

I have a Samsung NC-10 netbook which I take to work every day. Most of the time I use it just on the train/bus, but I also use it at work and home. It has a built-in 3G card which I want to use when ...
8
votes
2answers
2k views

How do I make certain web addresses use a specific network adapter on Mac OS X?

I have two Internet connections at work, my wired Ethernet connection (which is heavily filtered behind a firewall, can't connect to Apple Updates, etc.) and a wireless connection that is unfiltered. ...
7
votes
4answers
15k views

Routing all Traffic through OpenVPN Tunnel

I have installed OpenVPN server on Archlinux and am now using OpenVPN GUI on Windows 7, I can talk to other computers connected through the VPN but I have not yet figured out how to route all traffic ...
6
votes
2answers
8k views

Setup routing and iptables for new VPN connection to redirect **only** ports 80 and 443

I have a new VPN connection (using openvpn) to allow me to route around some ISP restrictions. Whilst it is working fine, it is taking all the traffic over the vpn. This is causing me issues for ...
16
votes
2answers
6k views

Does All LAN Traffic Travel Through A Router

I have a very simple question: if I have a router (DHCP enabled - leasing IP addresses between 192.168.0.2 and 192.168.0.254) with a switch plugged in, and I plug two computers into the switch, will ...
13
votes
4answers
10k views

How can I ping via an alternate gateway?

Our network has two modems, each one hidden behind a router. The primary router is on 10.1.1.1, the backup router is on 10.1.1.2, and are both configured to the 10.1.1.0/24 subnet. Both routers have ...
7
votes
2answers
6k views

Stop VPN being used on internet traffic on Win 7 [duplicate]

Possible Duplicate: How can I make the Windows VPN route selective traffic (by destination network)? How To Use Local Internet Connection To Access Internet While Still Connected with VPN ...
3
votes
4answers
11k views

Persistent routes for DD-WRT PPTP VPN client

My home network in the USA is behind a Buffalo router (G300NH) running their version of DD-WRT. I use the built-in PPTP VPN client to connect to a VPN provider in the UK. I route certain traffic over ...
2
votes
1answer
6k views

trick out cisco vpn with routes

I'm working on a way to trick out cisco vpn-client by modifying the routes on the local system to achive a status thats calles split-tunneling. I know that I don't have the right to do this without ...
7
votes
1answer
14k views

“Network is unreachable” when attempting to ping google, but internal addresses work

I can get to other PCs in my house on the 192 network, but trying to go outside gives me the "network is unreachable" message. p3p1 is up with a good IP Address. Running Fedora 16. What should I ...
5
votes
2answers
6k views

How to map an IP adress to localhost?

I want to map the IP address 192.168.1.222 to 127.0.0.1 so that if I use 192.168.1.222 in the web browser or ping command I get the response (and that from my 127.0.0.1). Is this possible via ...
4
votes
2answers
11k views

How can I setup a win 7 PC as a router?

I have an industrial PC with 4 Ethernet port, I would like to use this PC as a router on windows 7. Before we used Ubuntu so there is an open source solutiosn, but unfortunately the UPS power supply ...
4
votes
1answer
4k views

How can I route *some* traffic over an SSH SOCKS proxy on OS X?

I have a SSH SOCKS connection running for VPN purposes, and this works beautifully. By using either FoxyProxy for Firefox, or a .pac file for OS X's Automatic Proxy Configuration option, web traffic ...
3
votes
1answer
9k views

How to select default network interface for internet?

I have 2 network interfaces. Both use DHCP to obtain ip address. First provides internet directly and second uses PPPOE connection. How to select which connection windows will use to connect to ...
3
votes
3answers
3k views

hosts file for ip address

I would like to map ip address to specific localhost interfaces (e.g. 23.45.66.77 => 127.0.3.3). For named hosts I can use the hosts file. Naturally this doesn't work for IP address. This has to work ...
2
votes
1answer
793 views

How to route specific traffic through OpenVPN?

I'm running a server at home with rtorrent and apache2. I would like to route my rtorrent traffic via OpenVPN and since im kinda new to OpenVPN and iptables i would like to have a user friendly guide. ...
2
votes
3answers
21k views

Why does this ROUTE ADD command fail?

I am trying to block access to a single IP address by adding a specific route that leads "nowhere" (instead of the default gateway): route ADD 199.239.136.200 MASK 255.255.255.255 127.0.0.1 METRIC 10 ...
2
votes
3answers
808 views

Avoid corporate blocked URL's when on Cisco VPN

When I'm on my home PC and on my company VPN I can't get to sites that my company blocks. Is there a way to get around this? Why do my requests to facebook.com go through the VPN? Can you configure ...
1
vote
1answer
94 views

Can I avoid losing three IPs per network on a bridged Xen networking setup?

About a month ago, I asked this question on Superuser. The answer given there certainly works, but I've run into an issue I haven't thought of before. The setup I had running (based on the previously ...
1
vote
3answers
253 views

How to find the IP address of a router

I live in a dorm where many students have setup small wireless networks. There are two of this networks that are very close to my room as the signal is very strong. Our college uses DHCP to assign IP ...