the process by which data packets on communication networks are forwarded into the direction of their ultimate destination by routers.

learn more… | top users | synonyms

2
votes
4answers
3k views

Linux Ubuntu - Two NICs separate lan

I have this /etc/network/interfaces (IPs on eth1 are fake) auto lo iface lo inet loopback auto eth0 iface eth0 inet static address 10.0.2.15 netmask 255.255.255.0 broadcast 10.0.2.255 gateway 10.0.2....
-2
votes
3answers
928 views

DNS Configuration and Domain Controllers on Home Network [closed]

I want to experiment with Active Directory, strictly for my own education, so on my home network I launched two VMs, both Win2k8 R2 Servers (named 'Server1' and 'Server2'). I created two root domains ...
0
votes
1answer
257 views

Debian Stable - Routing problem

ADSL Router: Cisco 877 (172.16.0.254) PC1 (172.16.0.10) to port1 of router PC2 (172.16.0.20) to port2 of router Server, 2 NICs, eth0 to port0 of router. (172.16.0.240) Everything is OK with the ...
0
votes
2answers
984 views

How can I set up a proxy/router, so that some requests go to a slow VPN, and the rest goes to a fast local connection?

I have access to two gateways - one a slow VPN and the other a fast connection which blocks some hostnames (I'm behind the great firewall of china (gfw)). I'd like to set up something (a tunnel / ...
0
votes
1answer
139 views

Routing based on Protocol in Window 2008 R2

I have a PPTP based VPN setup on a remote machine. This machine is a Windows 2008 R2 Datacenter edition VM. The VPN connection does not have DHCP enabled and does not have an IPv4 default gateway. ...
0
votes
1answer
4k views

Virtual IP not getting pinged: wrong settings?

I am working on Linux. I added a route to a virtual IP say: 100.10.10.2 by running the command: route -n add 100.10.10.2 gw 127.0.0.1 It has been redirected to my local loopback. I checked the ...
2
votes
3answers
784 views

Router in front of Untangle UTM

I want to put a pfSense router in front of my Untangle UTM. There is only one thing I am not too sure about. If the Untangle box will sit behind another router and run OpenVPN, all I need to do to ...
3
votes
1answer
4k views

How can the route between two private IPs go via public IPs?

I'm trying to understand what this output from traceroute means. I changed the IP addresses for privacy but retained the public/private IP range distinction. traceroute.db -e -n 10.1.1.9 traceroute ...
0
votes
1answer
2k views

VPN Client not able to access a certain subnet

Client connect to ASA5510 via cisco VPN client. Access to 192.168.0.x subnet works fine, just can't get to 192.168.13.x. I can get there from the ASA fine just not via a VPN connection. The connection ...
5
votes
3answers
3k views

How can I reroute a sub-domain to localhost + port number?

I have several web applications running on my developer machine. They mimic our production web applications which are hosted on sub-domain. For example, consider: api.myserver.com - is mimicked by ...
3
votes
2answers
950 views

Prevent a single host from consuming entire bandwidth?

We have a linux router providing internet connectivity to several PCs. It's currently using shorewall to help make the iptables setup easier. Is there a way I can set it such that any individual host ...
4
votes
2answers
151 views

Add Route for machine in same DC

My routing table on my machine with IP of 46.84.121.243 currently looks like this - Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 ...
0
votes
2answers
551 views

Automatically updating routing table on server

I have a LAN with three routers on it, one connected to the Internet, one VPN router connected to a few remote sites, and a final route connected to a private network (using BGP to get prefix ...
1
vote
1answer
1k views

Cisco BGP clustering and route reflection configuration example

I am trying to make sure that I have this correct in my own mind how the Cisco configuration would be given the following example of route reflection and clustering with BGP. If you have three AS 1, ...
3
votes
2answers
1k views

Outbound IPv6 Trafic Fails

My hosting provider has supplied me with global static IPv6 for my machine. It appears that auto configuration has been successful and I can successfully ping my machine and tracepath6 appears to ...
0
votes
2answers
852 views

Windows 2003 - RAS service - VPN client can only connect to server, not internal network

Here is my diagram http://imageshack.us/photo/my-images/263/vpnt.png/ Server has two NIC: One connect to Internet, one connect to internal network. RAS service is configured with static IP pool on the ...
-1
votes
3answers
2k views

Comcast Business Class router setup

I do know a little about networking but im having some trouble trying to figure out in my head how to make this work before comcast comes to do the install on thursday. Right now we have AT&T DSL ...
1
vote
2answers
3k views

OSPF: how to advertise the subnet of an OpenVPN server?

I have successfully configured OSPF on all of our HP ProCurve 7102 routers, and most of our internal Linux routers. Routes get advertised, and all is peachy. Except for the routes into the subnets ...
2
votes
1answer
879 views

OSPF: quagga and HP ProCurve not talking

This question is related to a previous one on OSPF routing. Based on the advice give to the previous question, I have now made myself a network diagram, identified the backbone area and all other ...
1
vote
1answer
561 views

unable to fsockopen

I have 2 ethernet eth0 and eth1 on my server. The default gateway is set to be eth0. I need to connect ip 10.10.6.2 using fsockopen in php. The ip 10.10.6.2 is routed through eth1 (I have a rule set ...
1
vote
1answer
972 views

OpenVPN host cannot access client LAN

I have an OpenVPN server, call it vpn-server, with a LAN 192.168.3.0/24 behind it. The client, vpn-client, also has a LAN behind it, 10.4.0.0/24. Machines on 192.168.3.0/24 can access 10.4.0.0/24 (...
0
votes
2answers
2k views

DNS preferences for windows 7 client sitting across two networks

I have a few clients that need to sit across two otherwise separate networks. Let's call them network A (10.0.0.1) and network B (1.2.3.4). Network A is effectively a private network; any Internet ...
1
vote
1answer
1k views

ip routing on cent os

I have a web server with installation of Cent OS 5.6, cPanel/WHM. Currently the server have 2 ethernet and the configuration for both is listed below: -------------------------------------------------...
0
votes
1answer
985 views

Problem connecting to external web service from Amazon EC2 instance

I'm trying to access https://test.httpapi.com webservice from one of my Amazon EC2 instances running Basic Amazon Linux AMI. This is the output of the nc command: [root@ec2-instance]# nc -v test....
2
votes
2answers
1k views

Routing traffic on an ethernet alias to a default gateway

This question is related to a previous one I asked. I want to set up an OpenVPN dual client box such that a computer whose gateway is set to eth0:0 gets all their traffic routed through one OpenVPN ...
60
votes
3answers
99k views

What is the difference between unicast, anycast, broadcast and multicast traffic?

I have never had the privilege of working in an environment that required complicated routing or if it did require it, it was handled upstream of me. I've always used very simple static routing ...
2
votes
1answer
270 views

How to get ip prefixes from children of given as number?

So, for example I have as number as10282 how I can get ip prefixes of children for the given as number? bgp lookup tool Given tool is exactly what I need (with ticked include downstream prefixes), ...
6
votes
2answers
370 views

When to start using OSPF

We have 4 offices in different countries. They are all connected via VPN to each other (i.e. at least one VPN tunnel from each office to all other three). Each office has between 1 and 4 separate ...
2
votes
2answers
3k views

Multiple OpenVPN clients on the same host

I'm trying to run two openvpn clients on the same host (let's call this the dual client box), connecting to two different openvpn servers. My dual client box is running Ubuntu 10.04, and I've got two ...
3
votes
3answers
390 views

ipv6 local connection

So I have an ubuntu 10.04 router that is tunneling ipv6 to hurricane electric. It has perfectly fine ipv6 connectivity. My problem is that I want to have my ubuntu 10.04 machine behind it be able to ...
0
votes
1answer
5k views

Cisco Router - NAT in and out on the same interface

Here's the situation: I have a couple of clients connected to a switch and the switch is connected to a Cisco 2621. The clients all have IP addresses in the range 192.168.1.0/24 and the router ...
2
votes
1answer
3k views

Forward broadcast to fixed IP using IPTables

I need to forward (route) broadcast packets from several wireless clients to a single server in the fixed network. The wireless and fixed network are not bridged for security reasons. With the ...
1
vote
2answers
107 views

Is a routing loop ever justifiable even as a way to bitbucket IP addresses

At a client I found they had bought a large subnet of public internet ip addresses for their business and connected all computers up with public ip addresses. (bought it years ago and never changed it,...
3
votes
2answers
312 views

Traffic not routing as expected

In the following output, why does vpn1 route/ping to 10.100.0.1 instead of to 10.100.0.112? 10.100.0.1 is network gateway with no nat. 10.100.0.112 is dual home host with nat enabled. root@vpn1:~# ...
0
votes
1answer
510 views

IPv6 routing setup (using native IPv6)

I administrate the network for a small organisation. Having only experience with IPv4, I'm unsure of how to best approach IPv6. Existing IPv4 setup We have 13 public IPv4 addresses which are all NAT'...
1
vote
0answers
130 views

reconfigure vpn from cisco to juniper

Right now I have a vpn from a cisco router (ASA 5505) with a network 192.168.1.0/24 connectiong to a Juniper firewall (SSG-520) with a network 192.168.100.16/28. I want to reconfigure the subnet on ...
2
votes
2answers
4k views

Redirecting to other internal servers based on sub domain

Here is my situation home network, windows machines, 1 external facing IP address (that allows port 80) 1 windows home server always on machine, planning on upgrading to WHS 2011 soon. several IP ...
1
vote
3answers
167 views

Can you route a URL using a restricted port to a local URL with a safe port?

I work in an environment which heavily utilises non-standard restricted ports in URL's for development environments for instance ports 81-104 & 444-456. As a front end developer this causes many ...
-1
votes
1answer
1k views

OpenVPN routing problem

Here is the problem: Server is on LAN A, client on LAN B. Client can ping server, including hosts on LAN A, but hosts on LAN B cant ping addresses from LAN A. Tracoroute shows that ping from LAN B ...
0
votes
1answer
467 views

Cisco NAT failing on 3700 series

I recently fubared the public interface to an SSH connection. I'm trying to set up a NAT that will forward to the eth1 interface with a local address. The set up is a cisco 3750 -> 3560 switch -> ...
0
votes
1answer
1k views

Cisco 3750 - EIGRP not on common subnet problen

I'm getting lots of messages on a router IGRP-IPv4:(50)(Default-IP-Routing-Table:50): Neighbor 10.13.1.251 not on common subnet for Vlan11 10.13.1.251 doesnt respond and show ip route says 10.13.1....
-1
votes
4answers
552 views

IP Route problem on Cisco Router

My question is;I can't connect to network 192.168.1.0 .Where I wrong? Here is my cisco command.Also, no output from 'show ip route' command. Router#conf t Enter configuration commands, one per line....
1
vote
4answers
114 views

Help needed on internet routing

Looking for some good video lectures / book / articles which explains in a simple manner how exactly how packet moves in Internet. Searched the net, but couldnt find a GOOD one. Want to know how ...
6
votes
8answers
2k views

opvnvpn: addressing nodes in LAN-behinds

I've setup an openvpn server which i can access remotely, once it is connected, it creates a tun0 device on both server and client with virtual ip 10.15.119.x. the openvpn server is itself 10.15.119.1....
1
vote
2answers
997 views

Cisco router - cannot access NATed outside IP from local network

I'm configuring a small network at work, and I have some problem. We're assigned 4 external IPs. I have them in range 173.228.60.35 to 173.228.60.38. I mapped one of the global IPs to local IP by ...
0
votes
1answer
244 views

PPTPd only routing to eth0

How do I enable routing to eth0 without having the ability to communicate amongst pptp clients? I know ip_forward = 1 makes routing of pptp clients possible, but i dont want communication under pptp ...
1
vote
2answers
2k views

OpenVPN Network Unreachable

I'm working to set-up a VPN access to a group of virtual machines at Linode., the topology looks something like this: db.example.com LAN: (eth0:0) 192.168.154.127/255.255.128.0 utility.example....
1
vote
3answers
403 views

using bgp without owning ASN

Is it possible to use BGP to announce serving IP addresses without owning an AS number? Aim is to adding another WAN provider and increase redundancy with the ability to announce IP addreess from to ...
1
vote
2answers
196 views

Savvis.net blocking routing

My website and server are unreachable due to routing for the network block 69.70.44.0/24 seems to be routed from Europe to savvis.net. Then routinbg stops at a router identified as trl-pos-0-3-2-0....
1
vote
1answer
686 views

How to route VoIP phone through VPN

We have two offices (China and US) connected by site-to-site VPN using 2 Linksys RV082's. We also have a VoIP system with 2 VoIP phones in the China office. We have been having trouble with the ...