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2
votes
3answers
180 views

Accessing the servers via their WAN IPs from the internal network - connect them to LAN too?

Currently we have a few servers behind a router/gateway, which is in bridge mode, so the servers have directly assigned WAN IPs with no NATting performed. This works as expected. There is, however a ...
2
votes
4answers
520 views

Monitor bandwidth usage of a datacenter

I would like to know what application is best for measuring bandwidth usage in large datacenters. Our company is in the process of setting up a DC which will have around 1000 physical servers. We ...
0
votes
2answers
267 views

Linux or Windows Server as Gateway/Firewall [closed]

In my house, i'm running a server I use for testing purposes, and I'm planning on throwing away my knackered router, and making the server my Gateway to the internet and using it as a server for ...
3
votes
1answer
466 views

Passing client MAC addresses to DHCP server over VPN

I'm tasked with implementing VPN access on a gateway. The LAN DHCP server is configured to assign the same IP address to a given MAC address. I would like to have this functionality for clients who ...
0
votes
2answers
152 views

Linux as a router for public networks

My ISP had given me a /30 network. Later, when I wanted more public ips, I requested for a /29 network. I was told to keep using my earlier /30 network on the interface which is facing ISP, and the ...
0
votes
1answer
254 views

Setup dhcpd without gateway on purpose

I have an XP machine with two network interfaces. One is connected to my company's network (and the Internet). The other is a very local network which connects some hardware with my PC. Both the ...
6
votes
4answers
1k views

Is it possible to find out what gateway is available on a network without prior knowledge?

A colleague and I both presumed this was a clear "no" but, admittedly, our networking knowledge is limited. Is it even possible that, without prior knowledge of the network configuration (i.e., no ...
2
votes
2answers
7k views

How can I share my internet connection to my LAN with Debian?

I'm trying to make my Debian server the router for my LAN. I got two interfaces: eth0 connects to internet through PPPoE, eth1 to LAN. I switched on forwarding in sysctl net.ipv4.ip_forward=1 and ...
0
votes
1answer
4k views

How to make LAN PCs (Windows) accessible from a SonicWALL L2TP VPN connection

We have several LAN devices connected via a physical wired network to a SonicWALL TZ210 on subnet 192.168.2.0/24. Several of those devices are assigned DHCP addresses in the range 192.168.2.100 to ...
4
votes
7answers
728 views

multiple internet connection at office

We have been using two separate Internet connections in our office. People will share internet connection by setting their gateways to either of these. Gateway is one of our local server through ...
1
vote
2answers
1k views

Checkpoint R75 Security Gateway without default route

I've set up a virtual lab network in vmware with two networks. vmnet2 (192.168.100.0/24) and vmnet3 (192.168.200.0/24). My R75 is having the ip addresses 192.168.100.1 and 192.168.200.1, and is the ...
0
votes
2answers
665 views

Traceroute doesn't reach gateway

i have problem with my opensuse 11.3 network. So, i've assigned ip 192.168.137.2 to it, and another computer (win7) with ip 192.168.137.1 On the opensuse, the gateway is the 192.168.137.1. and the ...
0
votes
2answers
278 views

webserver from local network (behind NAT)

I have a debian server (gateway, web) which is behind ISP's NAT. I need access on webserver from my local network but domain has DNS record for external IP. Can I create "fake dns" for my local ...
3
votes
2answers
925 views

how to add iptables rules for two NICs on CentOS(act as a gateway)

I have a machine C with two NICs, namely eth0 and eth1, with CentOS 4.9 installed on it. Also I have a machine A connecting to C through eth0 and a machine B connecting to C through eth1. Now I want ...
1
vote
1answer
515 views

machines of two subnets communicate through CentOS(with two NICs)

folks. Firstly, I really have done a lot of searching, but still couldn't find a problem which was exactly the same as mine, and I have tried some of their answers, but didn't work. Finally, I put my ...
0
votes
3answers
1k views

Ubuntu 10.04: Two interfaces on a same subnet with a same gateway

My ISP has given me a 187.x.x.224/29 subnet. The gateway is 187.x.x.225 I have a Ubuntu server with 6 ethernet ports. The server does NAT routing and also acts as a webserver. My plan is to have eth1 ...
0
votes
1answer
76 views

Which brands of wireless routers and DSL modems care about security? [closed]

Which vendors have established a strong security process during development where they educate firmware developers about security issues, arrange security engineers to review the code, accept ...
1
vote
4answers
680 views

How to setup a small office network with a VPN client and a shared Internet gateway

I manage a small-office network but have very little actual networking knowledge / understanding. The network has a consumer grade wifi router (Netgear DG834G), several PCs/Macs, some iPads connected ...
1
vote
2answers
760 views

Port Forwarding not working locally

I have a new Comcast Business Gateway that just replaced my old, perfectly-functional residential modem. I noticed the router I had only had a 10/100 ethernet WAN port but I have a 100mbit connection, ...
0
votes
1answer
65 views

Servers cannot see internet gateway though their configuration is the same to another which can

I have 2 switches at the Data Centre - one is connected to the internet, and one for the internal private network. All servers have one NIC into the internet switch and one to the private one. All ...
0
votes
1answer
917 views

Openvpn basic configuration for full traffic routing

My client machine is Ubuntu 11.04, my server machine is Ubuntu 10.10. I'm trying to achieve the simplest quick and dirty solution possible to get all my client machine's traffic to be redirected to ...
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 ...
2
votes
1answer
298 views

Rackspace Firewall/Gateway Setup

I have rackspace account and wish to have this sort of setup: Firewall/Gateway eth0 - Public IP (56.X.X.X) eth1 - Private IP (10.X.X.X) Ubuntu 10.10. Accepts connections from the internet and ...
0
votes
2answers
461 views

Linux add route error

Here are these Linux and IP: LinuxA: eth0 188.9.5.2, tun0 10.0.0.1 LinuxB: eth0 188.8.6.3, tun0 10.0.0.2 LinuxC: eth0 188.9.7.4 LinuxD: eth0 10.62.8.5 On LinuxA, I can ping to 10.0.0.2 of LinuxB. ...
0
votes
2answers
521 views

How can I use a gateway (or proxy) situated at the other end of a wifi layer 3 bridge?

I have a main and branch office. The branch office has a flaky internet connection and I'd like to let users in that office surf the internet using gateway (or proxy) in our main office. I have a ...
1
vote
1answer
165 views

Which cloud services allow layer 2 link level connections between servers?

There are advantages when you can deploy one server A so that it serves as the IP gateway for machines B, C, and D. In a real machine room, for example, A can balance incoming customer connections by ...
1
vote
2answers
993 views

SMS Gateway Hardware/Software

What would be the best hardware and software to set up a Linux-based SMS gateway using a Sprint texting plan?
1
vote
2answers
3k views

Configure router/gateway on Ubuntu issue: unable to reach hosts behind ISPs gateway (network map provided)

I try to configure my notebook running Ubuntu 11.04 (desktop edition) as a gateway (may be router needed? --- this is the bit of confusion for me), so that I can share Internet connection (incoming on ...
2
votes
1answer
527 views

Static routes for making hosts on different network accessible

I have a ubuntu router machine with following network settings: br0 192.168.1.15 netmask 255.255.255.0 br0:1 192.168.2.209 netmask 255.255.255.248 I have a pc attached to the br0:1 network with ...
0
votes
1answer
453 views

Squid X-Forwarded-For enabled for specific domains?

I want to set up a squid gateway, which doesn't forward the X-Forwarded-For header to most of the websites. But I want it to be forwarded to a specific domain. Here's the sample I'm trying to ...
2
votes
2answers
449 views

Multiple Gateway improve performance

I have a proxy Server and a PBX server that both have their own router as a gateway. Nevertheless, the company acquired an additional more stable ISP and now I have three Internet connections. Is ...
0
votes
1answer
111 views

use windows server as 'remote' router for specific websites

We use a software on our windows 2008 server that regularly needs to connect to a licensing server. For budget reasons, we don't have a public fixed IP address. The problem is that the licensing ...
1
vote
3answers
313 views

ISP like Linux WAN router/gateway

My ISP has installed a fiber link at the place where I work. It has provided an ethernet WAN link to my office and has given a set of static ip's on 187.xxx.xxx.224/29 network. I need to setup a linux ...
7
votes
6answers
11k views

What's the difference between a gateway and a router?

Here we can see the router is 67.23.27.187(first hop), but the gateway is 67.23.27.1. What's the difference between a gateway and a router? How does my computer know the IP of the router when only the ...
2
votes
3answers
530 views

How do I set up a gateway through linux?

I want to create a linux gateway proxy for my wireless router. I have a modem connected to a non-wireless router connected to a wireless router set up as an access point. I want to put the linux ...
0
votes
3answers
558 views

Ubuntu: block access sites through internet gateway

We have a local server which manages our internet connection. This server functions as a gateway, and that way we share the internet throughout the office (instead of using a router). However, I'd ...
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 ...
1
vote
1answer
3k views

Linux Gateway: One network card how to masquerade from one subnet to another

Good morning one and all. In our network we have a single Linux machine that has aliased IP addresses. Each of these IP addresses sit on a network controlled by a remote router to an ISP. We want ...
1
vote
2answers
119 views

Mailserver vs. Mailgateway

What is the difference between a MailServer and a MailGateway?
0
votes
2answers
362 views

Centralized MAC filter for wireless lan

I am attempting to install a MAC filter in between a switch that handles my wireless network and the core of the network. The idea is to have a centralized MAC filter bypassing the filters built into ...
0
votes
2answers
1k views

Routing traffic through a specific port depending on Subnet requested

I have my network setup with a sonicwall device as the default gateway so all my traffic goes in and out through it. Now I have just setup a VPN on a cisco router from our local network of 192.168.5.X ...
0
votes
1answer
2k views

Enabling NAT forwarding using a second WAN interface and a second gateway on ubuntu

I have 3 interfaces: eth0 192.168.0.50/24 eth1 10.0.0.200/24 eth2 225.228.123.211 The default gateway is 192.168.0.1 which I want to keep as it is in the changes I want to make. I want to ...
0
votes
3answers
8k views

Error 504 Gateway timeout

I would like to know if an error 504 Gateway timeout always come from the load balancer or it can also be originated from Apache and the PHP code it's running ? Thanks
2
votes
3answers
3k 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
174 views

Is it possible to use 2 lines from 2 diffrerent ISP?

How can I (if it is possible) to set up the network gateway if I have 2 internet lines from 2 different ISPs? Furthermore, one of them is forwarding /28 static ip for (into) our network. Is there a ...
3
votes
4answers
640 views

Stress test speed on a gateway?

I'm interested in stress testing my gateway server but am lost on how. Most of the stress testing applications I've seen only see how much load an app like Apache can handle, but not this. ...
0
votes
1answer
346 views

Incorrect default gateway listed across entire domain

Our DC is a Win2k3 box that also does DHCP for the domain. I was having some network issues the other day that turned out to be DNS related and resolved those. Anyway, when I was running diagnostics I ...
0
votes
1answer
556 views

Multiple IP's using one NIC connectivity problem - Windows

I have a frame relay network that is directly connected to a GPRS network. I also have a ADSL high speed network and recently I have been trying to achieve the following network configuration using ...
0
votes
1answer
57 views

Blocking Clients while Forwarding All Traffic

Greetings, How to block clients by masking their subnet mask or changing their gateway information while forwarding any outward traffic from such clients to a specific proxy or server to display some ...
2
votes
3answers
1k views

How much does a IPtables router slow down a connection?

I would like to know if introducing a new gateway in my network will slow things down. The question may sound unclear but here is an illustration: Before Installing gateway server Main Router ...