Questions tagged [routing]

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

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Routing Between Intranet and Internet

I have 2 ADSL Modems: One is for intranet connectivity, the other is for accessing the internet. I connect the intranet to my PC on network interface "Local Area Connection", and connect to internet ...
Ehsan's user avatar
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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 - ...
Manny's user avatar
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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 ...
EricFromChina's user avatar
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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 IP-...
avggeek's user avatar
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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 ...
James Wilson's user avatar
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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 ...
GJ.'s user avatar
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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: ...
drekka's user avatar
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Use Spotify with 2 network connections (1 x LAN, 1 x tethered iPhone)

I have 2 network connections on my PC here at work (1 LAN and 1 over a tethered iPhone). Now I'd like to listen to music using Spotify. Since our firewall is blocking the connection to Spotify's ...
Gilles Radrizzi's user avatar
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Network routing issue

Here is the situation. I've turned server ns1 (a dual-homed linux box) into a router by enabling ip_forwarding on it (echo 1 > /proc/sys/net/ipv4/ip_forward) Server ns1: eth0: 10.10.0.200/24 (...
Sparctus's user avatar
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Determining cause of TCP/IP connect issue

I need HTTPS access to the host ws.betaqxl.com, but connect fails: :: curl -k -v https://ws.betaqxl.com * About to connect() to ws.betaqxl.com port 443 (#0) * Trying 91.204.81.183... Timed out * ...
Lumi's user avatar
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How do I update my routing table to accommodate VPN without using remote gateway?

Windows 7 x64 I have a VPN connection to my work network. It works fine if I have the "Use default gateway on remote network" is checked, but I don't want that. I know I need to update my routing ...
Sako73's user avatar
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Accessing IP cameras from outside network

I have three IP cameras installed on my LAN and I am accessing all of those on the same LAN using Internet Explorer. How can I access any of these cameras from another LAN? Each camera is set up ...
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Linux router frequently drops connections

Until a few months ago, I had my Linux desktop serving double duty as a router for my home network, and all was well. Then I set up a small Linux machine to act as a stand-alone router, and since ...
Flimzy's user avatar
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Make all network traffic from PC1 pass through PC2

I'd like to have all network traffic pass through a computer, so that I can write some scripts that do basic traffic analysis (want to create a simple firewall). I have a home wireless network and ...
bill j's user avatar
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How does a MacOSX VPN connection route traffic by default?

I connect to a VPN from home to work. I use Mac OSX 10.6.x's built-in Cisco support to connect. There are no non-default settings after authentication (eg to do with routing). How does network ...
Peter Mounce's user avatar
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How do I get my other computer to connect to the internet?

I have a WAN VPN with dynamic IP. I have configured my D-Link DIR-300 router so my computer is now connected to the internet. I want internet also on another computer in the room. Although I've ...
Guest's user avatar
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pix 501, static route to d-link router (different subnet)

I have pix 501 cisco firewall with internal ip 192.168.10.1. I have connected d-link router (dir-655) to pix 501. The d-link router has internal ip 192.168.0.1 The picture would like something like ...
ra170's user avatar
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Configure WRT-54GL to accept/forward connections from WAN

Is it possible to configure WRT-54GL (using only its own web interface and without modifying the firmware) so that it doesn't filter connections originating in WAN (this is done elsewhere on its ...
dpq's user avatar
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How to set priority on network interfaces on Linux

I'm working on a custom Linux OS (built with Yocto) and I have two internet sources, one is GSM and another one is Wi-Fi. GSM is handled with PPP connection (ppp0 interface) and for Wi-Fi I use ...
przemoch's user avatar
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Why does my Android phone fail to make DNS queries only when using Windows Server as its gateway?

(question initially asked on Server Fault, but marked to post here). Before anything, I should confess that I am a true Network-Rooky. As a hobby project I have set up a few things across my house: ...
Xyv's user avatar
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How to create Unreachable routes (IPv4 and IPv6) in Windows?

I need to set some rules to block network traffic, both IPv4 and IPv6. The routes should be a blackhole or unrecheable depending on the case. In Linux and MacOSX seems simple, there are specific ...
n3mo's user avatar
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2 answers
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Chrome not able to browse from ethernet network when connected to wifi. But IE can

My PC is connected to a WIFI access point to access internet. That is working fine. Now, I have connected an embedded system (say a router) to my PC using an ethernet cable. Now I am able to ping ...
tanmoy's user avatar
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Port forwarding router to listen on node.js server on home computer

I have a domain name: www.domain.com I went to my registrar that holds that domain name and logged in. I setup a DNS record type A with my public IP address. Now if I go to www.domain.com, I'm ...
BobbyBear's user avatar
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Is there a RIP (Routing Information Protocol) Client for Mac OS X El Capitan?

As a Windows support guy, I have recently tried setting a Mac up to access our work and clients' VPNs. We use Mikrotik Routers with RIP enabled to publish the routes for the multiple remote subnets to ...
Alasdair C-S's user avatar
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3 answers
4k views

How can I redirect a hardcoded IP address to a hostname

I have a device (an IP phone) that only allows an explicit IP address to contact the remote server. However, the IP address of the remote server can change (it's dynamically assigned). I figure there ...
David's user avatar
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3 answers
453 views

How does IPv4 subnetting work? [closed]

How does Subnetting Work, and How do you do it by hand or in your head? Can someone explain both conceptually and with several examples? Server Fault gets lots of subnetting homework questions, so we ...
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2 answers
9k views

Linux bridge network influenced by route table

I was doing an experiment about linux bridge and my network topology is like: As you can see, there are two hosts located in a LAN, Host1(10.74.68.58) and Host2(10.74.68.47). On Host1, I created a ...
ruanhao's user avatar
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Empty entries (***) when using traceroute on a PC but not when using traceroute in the router

Today when I try to traceroute www.google.com from both my router and my PC, I saw a weird behavior. Router's Traceroute traceroute to www.google.com (173.194.38.176), 30 hops max, 40 byte packets ...
caramel1995's user avatar
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3 answers
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Resolving IP conflicts when connected to an OpenVPN server

I have a home network, which consists of multiple machines in the 192.168.1.0/24 subnet. My friend also has a home network, which uses the 192.168.1.0/24 subnet. If I connect to my home network using ...
Ozbekov's user avatar
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How can I connect my WSL docker container to a local instance of Mariadb/MySql on Windows?

I'm a bit lost on how to set up routing from within a WSL docker container back to things on windows. I should note that I am deliberately not using Docker Desktop. So here's the scenario: I have an ...
Eric's user avatar
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2 answers
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How does Windows 10 find a routing rule in routing table?

Consider the following routing table: Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 192.168.8.1 192.168.8.2 2 ...
William's user avatar
  • 123
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3 answers
282 views

Does an off-the-shelf router have all LAN ports bridged?

I want to roll my own router, as the one provided by my ISP is terrible. The router of course provides DHCP and routing on all 4 of the LAN ports. Does this mean that it provides DHCP and routing on ...
cat pants's user avatar
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2 answers
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can anyone explain this completely random local IP address that appears on my network?

I have a DD-WRT router, and I am connected to a VPN. My routers local IP is 192.168.11.1. The VPN uses local address 10.10.0.6. However there is this strange IP address 10.16.128.1 that is always ...
wardr's user avatar
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1 answer
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understanding IP routing on windows PC

Here's my understanding: ipconfig lists all NICs my PC has (real or virtual) and with ipconfig /all. I can see all the info for them. Correct? arp -a prints the arp cache for each active NIC. The arp ...
user3813234's user avatar
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3 answers
77 views

Forwarding video from one IP range to other on same pc

My home network has two parts: Internet -- | router | ---- | switch | -----|--PC1 192.168.2.1 | 192.168.2.254 | |--PC2 192.168.2.2 ...
Michel's user avatar
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1 answer
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How does email routing work?

I want to understand how email routing works. Lets say I am trying to send a message to someone @gmail.com. According to my current understanding, the following steps happen: DNS MX query on gmail....
user2586432's user avatar
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2 answers
110 views

for a pair of hosts on Internet, are the routes the same in two directions?

for two hosts on Internet when a host send a packet to another host there is a route between them is the route the same on two directions? for example, two hosts A and B 1) the route from A to B 2) ...
misteryes's user avatar
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Redirect some IP to localhost

Can I use route or some other tool to tell my linux box that it should connect to localhost instead of a given IP (of some other machine on the internet, not on the same subnet)?
eseib's user avatar
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3 answers
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Router configuration - what does the NAT option mean?

In my router I have this option: I know what is NAT, but what does it mean the bridge option here? and how the NAT is related to it? what is more secured enable or disabled or bridge?
0x90's user avatar
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2 answers
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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 ...
Bruce's user avatar
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127 views

Fast wired network in a large building

As everyone knows, ethernet wiring is faster than any WiFi and more secure to boot. Using Cat 8 ethernet cabling can currently provide the best networking speeds where the switches and router can take ...
Chris Rogers's user avatar
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2 answers
207 views

How to make multiple virtual machines publicly accessible behind a small business router?

For simplicity, let's say we have 3x virtual machines each with their own static IP address on the basic small business router. What is the best way to configure 'things' to ensure each can be ...
Michael Cropper's user avatar
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1 answer
2k views

Use tcpdump to find all packets in and out and the interface used for each

I would like to debug the routing behaviour on a Linux box working as a router. What I'm looking for is the equivalent to tcpdump which can show me all IP packets going in and out of my box along the ...
mat's user avatar
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What happens to the route of a packet when I am visiting a site through a vpn?

I tried googling the answers but I am still confused. So lets say that I am connected to the home router. When I visit a site(say google.com),the traffic first passes through my home router. However,...
Lew Wei Hao's user avatar
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1 answer
9k views

Route ssh to specific gateway

I would like to know how can I force the use of port 22 to the interface I want, any interface, Wi-Fi or Ethernet. For example route *:22 to Wi-Fi. I checked route command but it looks like it's not ...
VivienG's user avatar
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1 answer
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How do you get 2 local networks to talk to each other?

So I have a bunch of switches which connect up some PCs on a data network and IP Phones and other devices on a telephone network Devices on the data network are configured both statically and via ...
Saajid Ismail's user avatar
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2 answers
233 views

Map internet name to a machine on my network

I have a domain and a WWW server within my network. I have one public address and running NAT on a router. Server is naturally port-forwarded. Let's say my domain is kitet.com so when anyone on the ...
Kitet's user avatar
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Router not allowing static IP?

When I set a static IP on my device, it works for a short time, then it won't connect again unless I do DHCP. It's like the router chooses an IP for the device, and only allows it to use that one. Why ...
tkbx's user avatar
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Are static routes from an ISP to a company network classful or classless?

The background to my question is a recent Cisco networking skills exam, where one requirement was to set up an ISP router with a static route back to the company's border router. I used a Class B /16 ...
Adam M-W's user avatar
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2 answers
239 views

Routing loop issues

I recently made a change to my Internet connection settings. Now, I am unable to open websites like facebook.com. I am also unable to login into Reddit. I think that should be solved once this is ...
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