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

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0
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2answers
7k views

Dual NIC Win2008 routing problem when private NIC enabled?

Have Win2008 Terminal Server. Works fine if only public NIC is enabled. But you want to enable the private NIC as well. What happens? Boom, nobody can access the Terminal Server (via public NIC). ...
0
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1answer
114 views

Packets for internal network addresses get gateway's MAC

i have the weird problem that certain incoming packets get forwarded to my internal netwerk with the right internal IP but when using wireshark i see that the MAC address is set to the routers default ...
0
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2answers
314 views

Route traffic from NIC2 to terminate at NIC1

I have a Windows 2000 server with two NICs already installed with separate IPs: NIC1: 172.14.3.113; No gateway NIC2: 10.15.120.22; Gateway: 10.15.120.1 NIC2 is for WAN connectivity, and NIC1 is ...
0
votes
1answer
748 views

OpenVPN client and traceroute

I have recently noticed a strange behavior with OpenVPN client. Say I do a mtr vpn_server_ip BEFORE connecting the VPN client. Everything is fine, the route is displayed as expected. Once connected ...
0
votes
1answer
1k views

Multihomed Windows routing issue

We have a multihomed windows server. It has two physical interfaces A (192.168.1.140) and B (10.42.130.140) From machines on the same subnet both interfaces are pingable From a 3rd subnet B is ...
1
vote
1answer
98 views

Setting up a subnetted Cisco WAN - Serial connection doesn't work

I have two routers setup on subnetted on a network address of 192.168.25.0/29 and I can't seem to get the serial connection to work with RIP. Here are the running-config for the two routers: ...
0
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2answers
477 views

Isolating one router port from the rest

I don't know much about TCP/IP and what I'm trying to do seems fairly basic to me but I can't seem to figure it out. I have one central router connecting to my ISP, and all computers connected to ...
4
votes
1answer
2k views

Windows Server 2008 R2 RAS VPN: access server on internal interface ip

short question: I'm usually a linux admin but need to setup a Win2k8 R2 server for a student project. The server is running as VM on a root server and has a public internet IP assigned. Additionally I ...
1
vote
1answer
993 views

Redistribute RIP tables in quagga

Apparently the command for that is redistribute connected. Where do I input it? I tried it in the telnet interface, but it's not recognised.
0
votes
1answer
209 views

Cisco Routing through VPN

I am looking for a way to allow a client Win7 computer, which connects to our California office's Cisco ASA 5510 over an IPSec VPN connection to then be able to connect to a computer in our chicago ...
3
votes
4answers
122 views

Only able to use the first IP in a range from ISP

Right now I have a subnet of 16 IPs. I want all of the ips to be "owned " by my firewall. I have a watchguard firewall statically configured with X.X.X.225 and has X.X.X.226 - 238 as Secondary IPs. ...
1
vote
1answer
460 views

Why did my new iptables rules screw up outbound traffic?

I recently set up Tomcat on Port 80 using instructions provided by Werner Puschitz. In essence, I had to execute these two iptables commands: iptables -t nat -I PREROUTING -p tcp --dport 80 -j ...
1
vote
2answers
1k views

Multiple public IPs through DD-WRT without 1-to-1 NAT

I've done a search here and wasn't able to find anything relevant to my situation. I apologize in advance if I've missed an existing post on the topic. Our ISP has provided us with 6 static IP ...
2
votes
1answer
238 views

Building a custom Router

I need to create the network below: Facts: The router is a Linux box (don't care about the flavor), it has 2 NIC's. The switch is unable to support VLAN's. The servers need a WAN-IP. NAT is not ...
3
votes
8answers
8k views

Force Juniper-network client to use split routing

I'm using the Juniper client for OSX ('Network Connect') to access a client's VPN. It appears that the client is configured to not use split-routing. The client's VPN host is not willing to enable ...
0
votes
1answer
434 views

How do I fix Hyper-V Guest OS connectivity problems through RRAS/NAT?

I have a Hyper-V host machine with NAT set up for my guest virtual machine. At a client site, the host connects to a wireless network through a cert (and then there's a proxy to access the extranet). ...
1
vote
2answers
42 views

approach to re-route (plain-text) protocols for machines behind a router that are down

I've been looking for some time now, how to achieve that, but I can't seem to find similar solutions or synthesize one from my knowledge. Here are the details about my setup: I have one ...
0
votes
1answer
506 views

adding a route entry to linux routing table

I have two systems with ip address say 64.103.56.1(A)(Dev name -wlan0) and 64.103.225.18(B),now what i want is , everytime I ping B from my system A, it has to be routed via a router say with address ...
0
votes
2answers
540 views

OpenVPN routing question

I am trying to finish setting up an OpenVPN server on my Ubuntu 10.04.2 server. But I seemed to have hit a snag. The OpenVPN installation went fine, I was able to make configuration files for both ...
1
vote
2answers
140 views

how to setup secure access to a host on internet?

we are planning to setup a source code repo + bug tracker for multiple users across the globe. Hence the network is internet - that is the host has public IP address provided by the ISP. since this ...
0
votes
5answers
629 views

OpenBSD Routing Problem

I am running OpenBSD on a network appliance hardware. It has 5 NICs. I want to give different IP's in same subnet to 3 nics. Eg: em0: 192.168.1.5 em1: 192.168.1.90 em2: 192.168.1.56 I make the ...
3
votes
5answers
2k views

How to route all traffic to one host trough one of two nic's on linux

Setup as follows: One gateway/firewall One switch Two servers behind firewall with 2 NICs each. Each NIC is connected to the switch. The servers are running Ubuntu server. One of the two NICs ...
2
votes
3answers
3k views

How can I prevent OpenVPN from clobbering local route?

I have a local network on 192.168.1.0 with netmask 255.255.255.0. When I connect to a VPN though OpenVPN (as a client), it pushes a route for 192.168.1.0 that clobbers the existing one, making my ...
3
votes
2answers
480 views

HTTP Hostname to IP Address Routing

I currently have the following network setup: Router/Firewall > IIS Web Server When a HTTP request comes through, IIS will look at the host header and decided which website to return. My problem ...
8
votes
2answers
3k views

Redundant OpenVPN connections with advanced Linux routing over an unreliable network

I am currently living in a country that blocks many websites and has unreliable network connections to the outside world. I have two OpenVPN endpoints (say: vpn1 and vpn2) on Linux servers that I use ...
0
votes
4answers
617 views

creating interface in linux

I have a tunnel with a third-party computer. This tunnel iface has the ip address of 10.244.248.126. The third-party just told me that there is an ACL that will allow only IPs from the range ...
6
votes
3answers
2k views

IPv6 works only after ping to routing box

Situation: There is an ipv4 only router in our network and every computer is connected to it (wifi or cable). A server with ipv4 and ipv6 is also connected to this router. The server has been ...
0
votes
2answers
200 views

Why are connections between two units on same switch routed through external gateway?

I have two units (a computer and a nas) connected to the same switch, both with external ips. Why are connections between them routed through the external gateway? Shouldn't the switch route them ...
1
vote
2answers
101 views

Networking up 3 pcs issue

I'm feeling a bit stupid because this seemingly simple task is completely stumping me. I have 3 PCs: Client, Gateway and Server. Client needs to connect via Gateway to Server. Both PCs are ...
1
vote
1answer
2k views

How do I route traffic to a specific site/IP-block through one nic, with other traffic through another nic?

I have two NICs: Network 1 Network 2 Network 1 is awesomely fast but blocks access to Site A. How can I route traffic to just Site A through network 2? When I have them both connected, Windows ...
3
votes
4answers
3k views

Failover routing between 2 gateways

I have 2 routers in a cabinet and would like to setup fail over between the two for our servers sort of like BGP but not BGP :). I need to setup the system to realize gateway 1 is (down) or under ...
2
votes
3answers
4k views

Force Windows Local Subnet Traffic through a Gateway

We are attempting to route all traffic from a certain machine to a gateway. This works ok for traffic destined for subnets outside of the machine's subnet. However, traffic to machines in the same ...
1
vote
2answers
975 views

IPTables masquerading with one NIC

I am running an OpenVPN server with only one NIC. This is my current layout: public.ip > Cisco firewall > lan.ip > OpenVPN server lan.ip = 192.168.22.70 The Cisco firewall forwards the ...
0
votes
1answer
342 views

RRAS on 2008R2 with routing and NAT

I am looking for advise to set up a Windows 2008R2 based router with NAT functionality. My current network consists of a few subnets (reserved + real ip addresses), e.g. 10.20.30.0/24, 10.20.40.0/24 ...
0
votes
1answer
235 views

User is unable to access a site when connected to VPN

One of our users is unable to connect to our internal VPN if he is connected to the VPN. In the TCP/IP settings of the VPN connection, the box for using the remote gateway is unchecked so he is ...
2
votes
1answer
508 views

Linux route cache shows high RTT for loopback - is it normal?

Here are parts of route cache from three different servers that are NOT under high load. # ip route show cache | grep -B 1 rtt local 127.0.0.1 from 127.0.0.1 dev lo cache <local> mtu ...
0
votes
2answers
149 views

Business internet multiple external IP's to one internal network

I have small business internet. Currently the modem they have given me has 4 ethernet ports on it. I would like to get a block of 4 or 5 static IP's from them but I'm wondering what kind of equipment ...
4
votes
1answer
4k views

Single m0n0wall - Two LAN Subnets - How To Setup

I have two LAN subnets that I need to link together they are 192.168.4.0/24 and 192.168.5.0/24 There is a m0n0wall running on 192.168.4.1. It's LAN connection goes out to our network switch, and it's ...
1
vote
4answers
1k views

Connect two subnets without router

I got two Comcast routers with two different subnets on each. Every subnet contains 5 static IPs. Two questions: Are there any problems if both routers and machines from both subnets are connected ...
2
votes
1answer
314 views

Is it possible to route traffic based on source address or VLAN?

I currently have two Cisco Cat5505s as the core switches in my network (layer 2 and 3), and we're looking to move over to a new WAN infrastructure, and subsequently re-IP address everything. At the ...
0
votes
1answer
172 views

SCEP routing using iptables

Does anyone know about SCEP routing table on linux? I would like to know if it is possible using software routing to scep requests go to another machine then usually goes using 443 or 80? tks
1
vote
1answer
1k views

How do I enable multicast routing in Windows XP

I have successfully set up a Windows XP machine as an IPv6 router using netsh, that is, it announces prefixes and forwards packets on two interfaces, as verified by pinging. Now I'd like to forward ...
0
votes
1answer
6k views

DrayTek Vigor 2920(n): VPN with VLAN restrictions?

I'm currently installing a DrayTek Vigor 2920n router in a new office. This router is to be used for 2 seperate companies. For one of these companies, the router has a LAN-2-LAN (VPN) connection to a ...
4
votes
3answers
2k views

Dead gateway detection on linux

I have to setup dead gateway detection on a linux box with three network interfaces. The only guides I have found so far on the topic imply patching the kernel, which we are not very keen to do. Is ...
0
votes
1answer
259 views

Network interface selection

Suppose I have more than a network interfaces and I want to selectively use them per application. eth0 is the standard interface with the standard gateway in the main routing table eth1 is another ...
0
votes
1answer
4k views

Cisco ASA: How to route PPPoE-assigned subnet?

We've just received a fiber uplink, and I'm trying to configure our Cisco ASA 5505 to properly use it. The provider requires us to connect via PPPoE, and I managed to configure the ASA as a PPPoE ...
0
votes
2answers
60 views

Mixing both local and nonlocal addresses on three switches

I have four computers that have nonlocal addresses like 150.X.X.X. Now I also get another few computers that should be only accessible through a gateway (it will be computing cluster) and they ...
3
votes
2answers
875 views

Public IP behind NAT firewall

I have a Linux NAT Firewall serving a virtual machine infrastructure. Right now all the VMs use NAT, but I'd like to have some of them to use a public IP that is not NATed. I have a range of IPs: ...
0
votes
1answer
478 views

Multicast NAT on Juniper router

I am trying to do source NAT on a J-series router (junos 9.2). I have two separate NAT rules setup (using security policies + source-nat interface). One is for regular unicast TCP connections and the ...
1
vote
1answer
956 views

Routing traffic over VPN to a certain subnet. Ping is okay, but no TCP traffic is coming back

I have the following setup Server (192.168.21.11, 172.17.4.6), that routes 10.10.10.0/24 through OpenVPN Client (192.168.21.9) Router (192.168.21.1) [m0n0wall] that has a static route for ...