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

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915 views

Linux Iptables Routing

I need help with a problem. My setup is: CentOS (Router) eth1 18.0.168.1 255.255.248.0 eth2 145.165.34.1 255.255.254.0 Windows Server 2008 18.0.168.2 My problem is from the Windows machine, I ...
2
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1answer
833 views

routing a secondary IP-addr. of a different private network on the same interface

Typical home-networking xDSL setup on a TG782 router/gateway. Hosts on the local private network are allocated IP-addresses in the range of 192.168.1.0/24 and can get to WAN through the aforementioned ...
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1answer
365 views

Routing traffic from one application to localhost

I'm using windows 7 and trying to route the entire traffic from one application to localhost, is this possible?
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1answer
628 views

OpenVPN routing issue

Building 1: 10.1.0.0 255.255.0.0 Building 2: 10.10.0.0 255.255.0.0 192.168.0.0 255.255.0.0 Buildings are connected by 1G metro ethernet. I reside in building 1. 192.168.0.0 is firewalled from ...
3
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1answer
427 views

Using traffic shaping, is limiting download traffic helpful or harmful?

I use traffic shaping in MonoWall (BSD) to great advantage with my home connection. It has been quite some time since I've had any kind of issues where user interaction with the internet has seen any ...
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2answers
17k views

Virtualbox: How to access web server on guest OS from the host OS?

After a lot of RTFM'ing and reading forums, I am still having problems and need some advice. I use Virtualbox on Ubuntu and installed a Centos server as a guest. My problem is that I cannot access the ...
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2answers
793 views

Do I need to create static routes for my home network?

50.x.x.x assigned by Frontier 192.168.1.1 Actiontec (FiosModem/Router) 192.168.1.2 Voip 192.168.1.3 DLINK/DIR615 (WirelesRouter) 192.168.1.3 assigned by Actiontec 192.168.2.1 DLINK DIR615 ...
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1answer
3k views

Port forwarding with IPTABLES and VBox

I have a small problem with getting a proper configuration of iptables under Ubuntu. But before, let me describe the network configuration: I am using xDSL line terminated with modem+router+DHCP ...
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1answer
13k views

GUI tool to manage routes for Windows?

I am trying to add a route to my computer: route add 10.2.0.0 MASK 255.255.0.0 10.8.0.8 But of course it never works. Is there a GUI tool that can manage routes for me? Adding routes by selecting ...
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1answer
13k views

NAT vs Port Forwarding [duplicate]

Possible Duplicate: What is port forwarding and what is it used for? What is the difference between NAT and Port Forwarding? Are they two different names for the same thing? Could you ...
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1answer
257 views

Re-establish route to localhost on Windows Vista

route -f How do you re-establish a route to localhost after this? I can re-establish connections to the Internet via wireless using route add {wirelessgateway} {wirelessip} if {wirelessif} route ...
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1answer
96 views

What could cause the Windows 'route' command to hang?

I've got a machine that I want to add a permanent route to. The problem is that the route command just hangs when I run it in the dos console. I'm launching the console as an administrator and then ...
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2answers
151 views

Switch/Router configuration

This has been bugging me for sometime and I really need to learn why I am having this problem. I have verizon fios and an ActionTech router (http://www.actiontec.com/products/product.php?pid=189) I ...
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1answer
2k views

linux drops packet when trying to route it - why?

I track packets using LOG targets for all chains of all tables and the last chain I see my packet in is the POSTROUTING chain of the mangle table: mangle_PREROUTING: IN=eth0 OUT= ...
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1answer
86 views

Improving GPRS Internet Performance

I'm not sure if this is the right place to ask this question. But since it is related to GPRS network infrastructure and somewhat packet routing I'm placing it here. Do correct me if I am wrong! I ...
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2answers
3k 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. ...
2
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1answer
853 views

Routing to one IP via different gateways

I have an OpenVPN connection (point to point). When program connects to server it gets IP and Gateway dynamically, from server. I need to make windows add route to my secure server through given ...
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1answer
1k views

Routing HTTP traffic over SSH

I need to access the URL http://REMOTE:54000. My network does not allow outgoing connections on port 54000. However I have SSH access to a host "TRUSTED", which does not have any such restrictions. Is ...
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0answers
5k views

Cannot delete a route in redhat linux

I have the following entry in a redhat linux machine to reject the private network route: Destination Gateway Genmask Flags Metric Ref Use Iface 10.0.0.0 - ...
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1answer
784 views

Is it possible to add a null route to an Airport Extreme?

The Airport Extreme doesn't seem to have an IP access-control list (ACL) to block outbound access to a particular IP address. Is there any way to add a null route or a blackhole for a specific IP so ...
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1answer
445 views

How do you add a blackhole route on your network?

I want to test an iPad app's response to dropped packets by adding a blackhole route on our WiFi network. I know the command is like this: ip route add blackhole 208.95.32.0/24 However I'm not ...
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1answer
276 views

How do I switch between routers when connected via Ethernet?

I currently have a Windows 7 machine and a Ubuntu 11.10 media server connected via Ethernet to a router. This router (Router 1) is connected to a Singapore ISP which prevents me from accessing ...
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2answers
8k views

How to alias an IP address to make DLNA resource accessible from different IP network

what I have I have a home wifi network 192.168.1.0/24 having DLNA resource 192.168.1.100. I have a TV with ethernet and a netbook with both wifi and ethernet interfaces. I want to make my notebook ...
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1answer
58 views

NetID set as the Gateway for a route

After establishing a pptp VPN connection I checked out the routing table and found out that there are two default routes first one defined on the eth0 interface and the other on defined on ppp0 ... ...
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1answer
6k views

iptables vs route

What's the difference between these two tools? Can anybody tell me what the main workflow of networking behind Linux (in relation to IPv4 packet filtering, NAT and IP routing table) is?
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2answers
1k views

How can I route all my Internet usage through a remote server?

I have a remote Red Hat Linux server in Hong Kong with rackspace with root access. At home I have a regular ADSL2 100 Mbit/s connection using a FRITZ!Box. I would like to understand the ways of ...
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1answer
2k views

How to use 2 internet connections from one computer - one just for ssh and the other for everything else?

The library and other public Wifis restrict internet access to certain ports, sometimes just port 80. I'd need to be able to use ssh and other programs that require a different port. My current ...
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2answers
6k views

Can I change the traceroute to a certain IP?

I like to play the game League of Legends but lately have gotten unacceptable amounts of latency (400+ ping). After finding out the game server's IP (95.172.65.165) I tried to traceroute it to see if ...
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1answer
4k views

IPv6 source address selection and routing in Linux

I'm in the process of setting an ipv6 on my test network. I work with a /56 network and CentOS 6.2. I have an interface with 2 IPv6 addresses on 2 different networks : 2b0 1:abcd:4001:c00::30/56 ...
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1answer
160 views

Domains to ip:port forwarder (2 servers, 15 domains, 1 IP)

I have 1 external IP address, but 2 web-severs (one is IIS and another is Apache) in network that host around 15 domains. I need a solution that would check all port 80 requests, detect which domain ...
0
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1answer
2k views

using a gateway outside your subnet but on the same switch, with no router

I have set up a network in a non-standard way, and would like to know if what I did is technically correct, or if I just got lucky. The setup works fine with my $20 5-port Linksys switch, but not ...
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2answers
190 views

Routing External HTTP Traffic to multiple machines within my network

This is obviously possible because its what all webfarms do, however I'm not a webfarm. I do have pretty good technical ability primarily windows, but would happily setup a simple linux box to ...
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4answers
8k views

How to route traffic from VM (Parallels) over an Open VPN connection on the host (OS X)

Scenario: I have a Mac running Lion that is connected to an OpenVPN server I have a Windows XP VM (running on parallels, but I don't think this is important) I want to be able to route traffic from ...
3
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1answer
2k views

VPN routing issue in linux- how to make applications that can only bind to IP addresses work?

Right now I have a PPTP VPN set up on my remote ubuntu VPS. I would like to have certain applications use the VPN to access the internet (rtorrent, irssi, among others). Currently, it is set up like ...
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5answers
1k 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 ...
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1answer
2k views

How to add route permanently

I'm using gentoo linux I want to add a route and have it persist after /etc/init.d/net.eth0 restart I can add successfully route add -net x.x.x.x/x gw x.x.x.x eth0 How can I make this persistent?
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1answer
2k views

Why does a network need its own specific address?

I don't understand why there has to be a separate network address. Aren't the DSN submask and the network broadcast addresses enough to identify a network?
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0answers
414 views

Redundant default gateways on LAN

I have two default gateways in my network: 192.168.1.1 and 192.168.1.2. Is there a way to make Windows clients to detect the dead gateway and chnage over to the wowrking one automatically? My gateways ...
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1answer
251 views

Odd internet packet routing

I want to know is there anyway to explicitly control the packet routing. I try to connect my computer in HK from San Francisco. It is extremely slow and I use tracert to see what is going on. It seems ...
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0answers
1k views

How to get all traffic in the network to a specific site to be directed through a proxy?

One of the servers in my LAN is running a certain SOCKS proxy, through which I'd like all traffic to example.com, from the entire LAN, to be automatically routed through without any configuration on ...
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2answers
3k views

How to avoid routing loops because of router default route entry?

Say my router has two interfaces (eth0 and eth1). The default entry in the routing table uses eth0. Now if the router gets a packet on eth0 and the dst IP does not match any entry in routing table, it ...
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0answers
572 views

Route all traffic via OpenVPN client

I've got OpenVPN client running on 192.168.0.3. What I'd like to do is route all the traffic from the second computer with 192.168.0.100 via OpenVPN client that's running on the first computer. My ...
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1answer
949 views

whats the use of 'default' routing table?

This is default routing table database in any linux system; [kumar]$ ip rule list 0: from all lookup local 32766: from all lookup main 32767: from all lookup default I understand about 'main' ...
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1answer
21k 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 ...
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0answers
168 views

Router maintains connections, but will not transfer data

My router losses its connection to the internet, somewhat, several times a day. It doesn't lose any connections, but it will not transmit data. For example, instant messengers and games will continue ...
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2answers
165 views

Network routing with two networks which don't like each other

I have an interesting situation at work. I bring my MacBook Pro in from home because it's the most suitable machine for what I do. At work I have access to two networks as follows: Network 1: ...
11
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5answers
16k 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 ...
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1answer
922 views

Linux, how to force all traffic to specific host over VPN?

I'm trying to ensure that all traffic to our stats server is forced over the VPN, in the case that the VPN falls down, it shouldn't be that the traffic tries to route over the WAN. To short-circuit ...
0
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2answers
705 views

Connect a CentOS 6 server to the internet without a router

I have a CentOS 6 web server. My ISP gave me one public IP/mask/gateway/DNS. I entered these parameters on my Windows laptop where I get internet. I can ping outside and etc. Then I entered these ...
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1answer
666 views

Some websites not loading at all, sometimes only HEAD loads

I cannot visit several websites, they just keep loading forever until the connection attempt times out. I am sure the websites are running fine because I have no problem accessing them through proxy ...