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

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6
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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 ...
1
vote
2answers
982 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
243 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 ...
1
vote
3answers
399 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 ...
1
vote
1answer
668 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 ...
2
votes
1answer
625 views

Exim Router Forwarding

I am looking to use exim on a 'frontend' simply to hide the IP of the true backend mail servers. This exim configuration will server for multiple domains. Really what I am looking for is confirmation ...
2
votes
1answer
281 views

Two networks, One Server

I have a set of servers that I want to set on two distinct networks. The justification is: 1) Last Mile Network Redundancy 2) Load Balancing It is very unlikely we will be allowed to run BGP for ...
0
votes
2answers
203 views

Linux, two fiber interfaces connected to each other - routing

I have a Linux box with two fiber interfaces connected to each other. Is there any way to set up routing in a way that would actually send the packets over the link? So far it looks like when two ...
3
votes
1answer
2k views

Very slow ssh, snmp, telnet network connections but http, sftp are fast

I have a small network with about 8 linux servers, a Cisco 2600 router, and a Cisco 3500XL switch. The router and switch have been configured and working properly for years. About 6 hours ago the ...
7
votes
2answers
1k views

Linux Router Problem

I have a Linux based router with four interfaces (each with its own private subnet). When I directly connect a device directly (i.e. no switch, just a patch cable) to one interface and another device ...
2
votes
1answer
14k views

Linux: routing traffic between two networks with iptables

Ok, so this is a strange network setup, but I`m trying to get the internets from one network to another. headless server ((((( wireless router (other network)-----internet | | router ...
5
votes
2answers
368 views

Do I need routing protocols on a small network?

I have a small network with 10 VLANs, mostly routed via our core layer 3 switch. RIP is enabled on the core switch, but I'm in the process of adding a second router for a couple of VLANs as our core ...
2
votes
3answers
495 views

Linux router with 4 NICs not working

I'm setting up a Linux based router, with 4 NICs, and I can't seem to convince it to work, despite following steps suggested on various web sites. Each interface is on a separate subnet as follows: ...
1
vote
2answers
1k views

How can you force a Mac Pro's “Ethernet 2” link to UP, without a cable attached?

All Mac Pros / XServes have 2 gigabit wired NICs. It has always annoyed me that a: there is no way to bridge them (no BRCTL, et al. for Mac), and b: there is no way to "use" the second port, even ...
1
vote
3answers
1k views

Linux Router with Single NIC

Suppose I have a small network, with a number of VLANs as follows: VLAN1 10.1.1.0/24 VLAN2 10.1.2.0/24 VLAN3 10.1.3.0/24 VLAN routing is taken care of by the core switch, the switch ...
4
votes
4answers
8k views

Windows Server 2008 Ignores Persistent Route With Lower Metric

I have three Windows Web Server 2008 SP2 machines on a 10.100.20/24 subnet. I need to setup a persistent routing rule so that outgoing traffic to the same subnet goes through a hardware load balancing ...
0
votes
1answer
184 views

Internet Access via CentOS box used as Router

I am having problems getting my network to play nice, despite it working previously. Here are the main system details; CentOS box as a router / firewall (firewall currently disabled while I get the ...
1
vote
3answers
2k views

help with a static route on centos 5.6 please

I currently have a machine connected to a LAN and to the internet working fine. I now got a dedicated connection to a remote office and must create a route from my machine to specifically 1 machine on ...
0
votes
1answer
958 views

How can I route specific domain names to a specific server

We have 3 servers internally. - The first one (beluga) is our domain controller and file server. It has a DNS controller, but I don't know how to configure it correctly, and my boss don't want us to ...
1
vote
1answer
534 views

How to route lan traffic from one NIC to vpn connection that uses another NIC

I have a server (windows server 2008 r2) with two nics. One is connected to a local lan, the other to the internet. It has a vpn connection setup to connect across the internet to another server to ...
1
vote
2answers
766 views

Iptables prerouting and IP forwarding

I have a linux machine used as gateway for a Win XP machine. Both are in Virtual machine for testing purpose. Now I want to trick the Win XP user (me) with the forwarding of an IP address: I want to ...
0
votes
1answer
362 views

Multiple public IPs with multiple default routes - Windows

I have a small branch office, which has two internet connections from two different ISPs, each providing us with a /29 (eight IPs). I currently have an extranet server there (basically a web server ...
0
votes
1answer
2k views

Windows Server 2008 R2 RRAS VPN client routing

Our company network is 10.0.0.0/24 (not /8 as the class suggests, this wasn't my decision, and sadly can't be changed). We set up an RRAS VPN server. Windows 7 clients are advised to be set up not to ...
0
votes
2answers
138 views

Routing different interface

I have a gateway+webserver box with multiple outside interfaces to service multiple SSL sites. I'm using plain simple iptables script as a firewall. The default outgoing interface is eth0 ...
1
vote
1answer
919 views

Passing Wake On LAN traffic across subnets with Dell PowerConnect 62xx

I am working on an SCCM project that requires powering on computers in the middle of the night to run updates. SCCM can send the WoL packets, but I am struggling to figure out how to pass this across ...
1
vote
1answer
219 views

How to route all packets through Windows web server 2008?

I have the following sitiuation I have dedicated server with IP 85.25.148.23/255.255.255.0 GW 85.25.148.1 running windows web server 2008 I installed VMware on it having linux centos OS I found a ...
1
vote
1answer
3k views

Any help on how to use iptables to postroute to eth0:2 alias in ubuntu?

On my server I want to route my internet traffic over my eth0:2 alias. When I use this command: sudo iptables -t nat -A POSTROUTING -s 10.8.0.4 -o eth0:2 -j MASQUERADE It returns this: Warning: ...
2
votes
2answers
401 views

Splitting a subnet, and routing it on a two interface iptables firewall

I have a two interface Linux iptables firewall. Currently I have several servers behind it on a private network 192.168.0.x. The firewall currently has each IP configured locally and uses NAT to ...
0
votes
1answer
1k views

Trixbox CentOS Default GW Problem (Multi-homed server)

I'm having an issue with a CentOS trixbox server which is dual-homed (one private facing NIC [eth1], one internet-facing NIC [eth0]). I can't seem to get the default gateway to set properly to our ...
0
votes
1answer
157 views

“Hub and Spoke” Help 2 different Cloud services via 2 different VPNs and 2 Different Routers

We currently have 2 VPNs set up between our LAN and 2 different clouds using 2 different Routers. Those VPNS are working well on their own but now I need to be able to ping from clients in one VPN to ...
2
votes
3answers
3k views

Windows vista and 7 don't honor routing table metric?

I have the route table below on a Vista machine, I can see the same problem on Windows 7 too. If I ping 193.181.14.10, I would expect the OS to honor the metric and choose either 0.0.0.0 ...
0
votes
1answer
976 views

Configuring a new core switch with VLANs

I have a core switch that I've purchased second hand, it's foundry switch. I have created 4 VLANs (VLAN1 to VLAN4). I have created a VLAN interface for each VLAN and assigned it an IP in that VLANs ...
0
votes
3answers
152 views

How can I get a series of IP-based equipment to share the same LAN IP address?

I have a piece of equipment (WS-A) which has embedded web and email servers that can receive port 80 traffic and send out port 80 and port 25 traffic. Currently WS-A sits on the LAN side of an ...
2
votes
2answers
5k views

Specifying a preferred route when there are multiple links to same network

I have a server with multiple interfaces and IP addresses on the same network. I would like for non-iSCSI traffic to exclusively use one of the interfaces, and for iSCSI traffic to exclusively use the ...
1
vote
2answers
87 views

protocol based switching / routing?

I have run into a snag with a network design project I'm working on. Our internal network is 192.168.1.x. We have two gateways out of our network, #1 is .20 and #2 is .52. Normally you could pick and ...
0
votes
2answers
55 views

VPN Gobbles default connection

I'm not feeling the best, so I'm remoting in to work with a VPN. However, it gobbles out all outgoing connections, which means putty sessions and internet usage don't work when the VPN is connected ...
0
votes
2answers
5k views

IP Route Table gets reset on restart

My computer has 3 Network Interface cards (NICS) and one more virtual Network Adapter that in reality is connected via USB to a Modem. It's a complex setup - the problem is I have multiple Internet ...
0
votes
2answers
312 views

Use cisco catalyst to split 26er Subnet into 2 Networks?

Is it possible to split a Network into 2 parts? Example there are a 192.168.100.129/26 Network i want to split one Address, the last one for example, to a diffrent vlan. So can i create IP based ...
0
votes
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
votes
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
votes
2answers
326 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
795 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
votes
2answers
519 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 ...
5
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
2answers
1k 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 ...