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

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Forcing local IP traffic over cable only works for a few seconds

I have a machine with three network devices (eth0 - eth2) with eth1 and eth2 connected together via a network cable. I access the system via ssh using eth0. eth0 is on one ip range 10.87.3.x and ...
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1answer
41 views

Configuring route from source to destination

not an expert in Solaris networking so would like to ask your opinions Say i want to configure packet routing from source 10.126.120.130 (A) to destination 10.214.140.9 (B). I configured it this way ...
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45 views

Wireless NIC Configuration Troubleshooting

My wireless connection at home doesn't work anymore... I was onsite with a client, and their network team installed a few static IP address routes so that I could connect to their internal network, ...
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0answers
30 views

Ping works when initiated from one node, but not from the other

I have two remote nodes on different networks. No node has a route for the other node network, so default gateways should be activated. Node 1 has the correct default gateway that enables the ...
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113 views

windows server 2008 R2 vpn cannot access internet

It seems I have a rather complex case here that I've been stuffing on net for a week but still not go. I would try to explain this issue(s) at the best I could and hopefully get this solved. I have a ...
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843 views

How to setup routing / NAT / Remote network for VPN in pfSense?

I have a gateway machine—running under pfSense—and it has VPN connection to private network in range 10.0.0.0/8. I have standalone OpenVPN program, which allows me to connect to this net ...
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54 views

Is there a way in windows to force/encourage a program to use a specific NIC (not as a developer)

I have multiple network cards, and can use more than one of them to connect to the internet. It is simple to force connections to a specific target IP to go through a specific NIC, using the route ...
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1answer
46 views

Routing through two different network interfaces with conflicting ranges

This is similar to the question Is there any alternative to virtualization for handling two different interfaces, different networks and same IP range? but that is about linux. And also similar but ...
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1answer
63 views

How Does a Router Map Inbound Traffic to LAN Nodes? [duplicate]

Imagine a home network of several computers connected via router to an ISP. Computer A wants to request a webpage from a remote website, 10.234.12.8. The address is not in its ARP cache, so it ...
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1answer
108 views

How to route traffic from NIC1 to NIC2 when both NIC's are in different subnets?

I am implementing anycast ip on multiple servers which have 2 NIC's installed NIC 1 is connected to the production LAN with a subnet and a Default Gateway (automatic registration in DNS enabled for ...
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15 views

VLAN routing query on HP Swtch

I have Layer 3 HP switches throughout my organisation. They are set up to perform routing between all the VLANs connected to them, and everything is working. I am pretty proficient with using them, ...
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1answer
127 views

VPN Issue - Unable to reach Servers when connected to VPN

I have a user who's laptop every time he connected to the VPN the internet on his laptop would completely cut out. To get round this issue I changed the config of the VPN connection to not use the ...
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1answer
172 views

allow incoming ssh with openvpn client

I have set up an OpenVPN client on my home router. The moment the tunnel goes up, I can no longer ping my router from the internet using its WAN_IP. I would like to allow certain incoming connections ...
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2answers
116 views

How does MAC Source Address Learning work with regards to hubs?

On my previous assignment for a networking class, I compared answers with a classmate regarding Source Address Table for a problem that had 3 devices connected to a switch. Device A + B were ...
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0answers
64 views

OpenVPN route specific traffic through normal interface

I use OpenVPN service and I test my software with a remote server. My problem is that VPN connection is slow and picture uploading through VPN with FTP service is laggy. I want to use C# database ...
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53 views

Disable/forward ping on router

I'm trying to ping my computer from an external device but it's is behind a router which answers the requests. The router is a TP-Link WR841N running OpenWRT 12.09. I'm guessing I'll have to use ...
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1answer
52 views

Multiple uplink routing on Linux

Objective I'm trying to setup some kind of "uninterruptible Internet supply" for a Linux machine. For this reason I'm using two uplinks: a standard wired connection via eth0, and additionally a 3G ...
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1answer
95 views

Confused about entry in windows route table

Disclaimer: I know very little about this, please humour me with the obvious because I'm probably not aware of it. I have a windows PC on subnet: 192.168.0.0/255.255.255.0 its IP is 192.168.0.2, ...
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51 views

How to relay broadcast traffic using ncat?

I have 2 servers, 192.168.1.1 and 192.168.2.1. I want to relay any broadcast traffic (192.168.2.255) through 192.168.2.1 to 192.168.1.1. Here's what I'm doing to relay port 137 traffic, and it seems ...
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2answers
327 views

Routing works with netmask 255.255.255.0 but does not work with 255.255.0.0

I had multi WAN router with LAN address of 192.168.10.1/24. Also, I had a device with address 192.168.100.1, which was connected BEHIND WAN1 interface. To access this device, I have added a static ...
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0answers
580 views

mac osx override default route for address range by net mask

On my mac I have two adapters, I'd like to use the WiFi as WAN and Ethernet as LAN by setting up some custom routing. The service order is set to WiFi then Ethernet which in the routing table looks ...
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3answers
706 views

Difference between proxying and routing

I'm well aware what proxies and routers are used for. But I don't know how to reliably differentiate them. Here is a list of factors that I find in them. Proxy server Can freely modify application ...
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1answer
264 views

How to route an app outside the VPN/default route?

I have a Linux machine that is always connected to a VPN (vpn0 interface), and the default route goes through the vpn0 interface. The connection to my router is done through the wlan0 interface. I do ...
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1answer
39 views

Can't reach device through multiple routers

I have the following construct:        (WEB)             |     Router(Fritz Box)      192.168.178.1           /              \   Router           PC 192.168.178.34   (Asus WLan)   192.168.1.1        ...
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142 views

Why does my PPTP VPN connection fail to route to the remote network in Linux?

I'm trying to connect to my office's PPTP VPN on Linux via ppp. The gateway has a local IP address in the 10.4.x.x net and I need to access other machines in the 10.x.x.x net (which I can do normally ...
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1answer
497 views

The route addition failed: The system cannot find the file specified

I am trying to add a route line in command prompt : D:\Users\OM-11>route add -p 10.9.12.0 mask 255.255.255.0 192.168.6.2 metric 21 if 192.168.6.26 CP is opened in administrator mode, my windows ...
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0answers
55 views

Reroute all localhost requests to static ip

I've been searching the net for hours to no avail. I have a project in Visual Studio that has service references to localhost, but I need to be able to reference the actual ip of my computer, not ...
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1answer
33 views

Minimal Network latency

Ok guys, I got this on a test about networking in the university. So lets assume ideal conditions for this one: In Which communication schema the network is expected to have minimal latency in ...
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0answers
147 views

Setting up outside access to private network using openvpn and a server in the middle

I am Trying to set up the following: [HOMEROUTER] -- [INTERNET] -- [SERVER] -- [INTERNET] -- [External Client] | | | ...
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47 views

Configure Juniper SSL VPN on separate server for users

We have some client servers in USA and users in our LAN connect to these servers using Juniper SSL VPN client provided by the client. Now the issue is, numbers of users are increasing and it's been ...
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49 views

no route to host: Is this associated with SSH or system network configuration?

Problem statement: Not able to ssh from pc1 to any other pc's mentioned below after adding the IP rules tried below System setup: I have a set of 4 machines connected to HUB. Their N/W config: ...
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1answer
788 views

IPfire OpenVPN access to LAN (Green) network

I've set up a separated(Dev) network with IPfire: Web --> dd-wrt --> Home Network (192.168.0.0/24) --> IPFire (192.168.0.29) --> Dev Network (192.168.2.0/24) I would like for the team to be able to ...
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1answer
114 views

How to NAT between 2 network interfaces without impacting routing

My Linux-based router has 5 Ethernet ports. It is currently acting as a router between ports 1 & 2 and the dedicated WAN port, without NAT. Port 1 is 192.168.1.1/24, port 2 is 192.168.2.1/24, WAN ...
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149 views

multiple ip and subnets in virtual routed xen environment

I'm trying to setup a multi ip, multi subnet environment using xen on debian wheezy host. I have only one NIC and the guests are also debian wheezy. this is my original, working, ...
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1answer
56 views

What are the primary determining factors for the latency of an Internet hop?

Consider the following output from traceroute, from me in Sweden to a server in the US: 1 192.168.1.1 (192.168.1.1) 0.127 ms 0.148 ms 0.167 ms 2 ...
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2answers
61 views

Does a router require the MAC address of next hop to send packet or is the IP address of next hop enough?

When packet gets converted into a frame, it gets a "Destination hardware address", "Source Hardware address", "Ether-type field" or "length", "data field" and a "Frame check sequence field". Now, at ...
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32 views

Route external traffic through vpn

I have a laptop and a desktop pc. The laptop runs Win8.1 and Hyper-V, the desktop runs Win7 and a cisco vpn client. For some reason I don't fully understand, I can't run both the Hyper-V and the cisco ...
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1answer
220 views

VPN on SSID #2 (OpenWRT)

I am a new at openwrt (attitude adjustment - TP-Link WDR3600), I am trying to get an OpenVPN On Dedicated Wireless Access Point (VAP). Let me show you what I'm trying to do here with visuals: SSID ...
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1answer
3k views

How to enable ip masquerading/forwarding on CentOS 7

I want to enable IP masquerading/forwarding on CentOS 7, but when I specify net.ipv4.conf.default.forwarding=1 in /etc/sysctl.conf, it doesn't work. Can any one help with this problem?
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31 views

IP rule table look up does not seem to work

I have a sytem with three network interfaces. Below is the configuration that I'm trying to set up. wlan0 (its actually an WiFi AP interface) - other devices connects via this interface. net1 - ...
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28 views

Local Network Addresses Visible to ISP

While I was on a support call with my ISP, their network engineer started listing IP addresses that were visible to him on my local network. He was right on the money as far as IPs that were up. I'd ...
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0answers
71 views

expose VPN IP to External IP

I have setup a VPN on a windows server 2012, I have several machines at multiple locations, (ie: laptop/workstation etc..). What I need is to be able to connect to the VPN from anywhere and would be ...
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130 views

Mac OS X Internet Sharing VPN Over WIFI - Selective IP Address Routing

I am using internet sharing to share a VPN PPTP Connection over Wi-Fi. My Mac Mini is an access point and I have clients connecting through it. This works a treat and all devices connecting to my ...
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1answer
130 views

Can I avoid losing three IPs per network on a bridged Xen networking setup?

About a month ago, I asked this question on Superuser. The answer given there certainly works, but I've run into an issue I haven't thought of before. The setup I had running (based on the previously ...
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3answers
73 views

Two (multiple) internet providers?

I have two (multiple) separate internet providers. Is it possible to setup my network so that it use both (all) of them to speed up both download and upload (packet-level routing)? If it is not ...
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0answers
36 views

TCP 'ip route change' not working to change cwnd on Linux

I'm trying to change the cwnd using 'ip route change'. The command I'm using: ip route change 172.16.231.0/24 dev eth0 proto kernel scope link src 172.16.231.26 cwnd lock 7. The first time I run ...
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0answers
227 views

Allowing internet connection through VPN

I had created a VPN income connection in windows 7. Everyone connected can see my local files and all, but I would like them to also be able to use my internet as well. my computer IP is ...
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1answer
68 views

Route traffic to a destination to another destination using iptables

How to route traffic to a destination to another destination and receive response using iptables I have two vps on cloud. Lets say VPS-A and VPS-B. If a request to 8.8.8.8 generated from VPN-A, I ...
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2answers
3k views

Routing all traffic over VPN on Ubuntu Linux

After having spent now hours troubleshooting, trawling potential solutions on this site and others, and I am resigned to beg the advice of my betters. I am working to route all network traffic on an ...
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88 views

How do I set up split tunneling when using a VPN client in linux?

I work from home and use a VPN client to access a client's servers (Juniper Network Connect). The VPN client creates an automatic default route that routes ALL my traffic through the vpn. I only need ...