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

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Windows 7 IP routing

I'm really stuck on this one and I have been told stack over flow is a great place to come for advice. I have a machine running Windows 7 Professional with two internal gigabit NICs. I have enabled ...
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38 views

How do I route data from a VPN-Connection to a server connected with ICS? (Windows)

I am running a Windows 8.1 machine as a centerpoint in my network, it has three network interfaces, Wireless Wifi, Ethernet, and a VPN tunnel. The Ethernet interface is used to share the computer's ...
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1answer
51 views

Is it possible to setup a private IPv6 subnet and route to the Internet?

I am still trying to figure out how IPv6 works. But I had a question. I currently have an pfSense firewall attached my Comcast service and configured with to request a v4 and v6 WAN address from ...
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1answer
94 views

Virtual servers not forwarding when DMZ set in DLink 2730B

My router is a DLink 2730B. The target machine IP is 192.168.1.6. I’ve applied DMZ Host to this IP, and have configured on 'Virtual Server' the following settings: Port 21 on 192.168.1.6 is ok, I ...
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176 views

Routing specific port ranges to specific gateway on Asus AC68 router using iptables and ip route

Linux noob here. I was hoping someone could help me with configuring some routing rules on my router, an Asus AC68. The router is connected to two gateways, wan0_gateway and wan1_gateway. I have ...
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78 views

Not able to SSH into Raspberry Pi when PPTP is active

I have a Raspberry Pi set up as a seedbox, and I'm trying to make it connect to my VPN. I'm using PPTP to connect, and I can make the connection work just fine, and my IP address as shown to the ...
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39 views

Route IP traffic to different machines based on API call

I have a requirement to route IP traffic on public IP a.b.c.d:xyz to either e.f.g.h:xyz or e.f.g.i:xyz, based upon some known state of those machines (known to my app). The traffic itself would not ...
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1answer
261 views

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 ...
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24 views

Sharing APs, but different gateways

I'm moving into a student apartment building with three friends soon, and I could use some help in designing the network. The situation is as follows. We each have our own outgoing connection with a ...
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1answer
135 views

OS X, packet filter (PF), route-to options

I was trying to setup "policy based" routing with pfctl (PF) on OS X 10.10, however no matter what i do, i am getting "syntax error" from pfctl. config is rather simple: cat ./test.conf inf="en0" ...
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1answer
261 views

OpenVPN over SSh port forwarding : can't redirect all trafic through VPN

I'm trying to escape my university wifi network rules with my Macbook (OSX 10.10). The university allows us to use a server, say bastion.univ.com, to mount an ssh port forwarding. I've an OpenVPN ...
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1answer
147 views

No 6to4 default route in Windows 8.1

On my Windows 8.1 laptop, i can’t connect to native IPv6 hosts over 6to4. route print -6 shows that no default route is set: ...
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6 views

Network access, routing issue

My ISP is providing me 3 IP addresses over a single network cable each assigned to a MAC. The main network cable is connected to a switch. 2PCs and 1 Router are connected to that switch. PC1 is ...
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2answers
93 views

Neighbor solicitation or advertisement not forwarded between interfaces

I have Ubuntu 12.04 installed in a VirtualBox VM on a Windows 8 host computer. Windows 8 had a hosted (wireless) network to which I can connect with my Android phone. The eth0 interface of my VM is ...
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15 views

VPN Client to Client Communication

Yesterday I setup a new VPN server which is located in a datacenter with a static ip address. My homeserver is connected to this VPN server and my smartphone as well as my notebook and I'd like to ...
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291 views

Skype doesn't connect through OpenVPN

I have an OpenVPN server running on a VPS. When I connect to the VPN using the redirect-gateway option to route all traffic from the client through the VPN, Skype loses its connection. As soon as I ...
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46 views

Connect to IPv6 network with a VPN not supporting IPv6

I have connection to IPv6 network, as well as a VPN connection (IPv4 only). However, the two conflicts with each other: when I connect to the VPN, I cannot connect to IPv6 host, by domain name or IPv6 ...
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20 views

Route network traffic back to the same wire

I would like to monitor outgoing traffic from my wi-fi connected phone using Wireshark on my Windows desktop. I changed default gateway on the phone to the IP of the desktop and Wireshark can now see ...
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35 views

What are the inconveniences of replacing a router by a computer?

I need to manage the internet usage of all the computers (between 10-50) in a network with deeper capabilities than those that a classical router offers. I would like to have features like: ...
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1answer
110 views

Setting up alternate routes to blocked sites via Wi-Fi in Mac OS X

My office has restricted access to Internet sites such as Skype & Dropbox. I also have access to an unrestricted Wi-Fi. The laptop is connected to both access points. Now my problem is, when en0 ...
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2answers
86 views

Routing 2 NICs with Windows 7

I have a network topology according the picture below. The first computer is conected to computer 2 through network adapter with IP 10.44.12.112. I need comunicate with the computer 1 with PLC, but ...
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287 views

sudo route - n add not working in Yosemite

I'm hoping someone can help. I log into one of my customers via a PPTP Mac native VPN. Prior to Yosemite, I would connect to the VPN, then run this command so I could access mail/internet while ...
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1answer
34 views

Why are my routes being removed/replaced when connected to vpn?

Since I work on customers sites and most of the time I need to be connected to my company's network (vpn), I usually create routes to access customers servers. However, sometimes when I'm connected to ...
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2answers
313 views

DNS Resolving Issue For Mavericks

I am observing a weird issue on my Mac running Mavericks (OS 10.9.5). I am able to browse any website without any connectivity issues. However, when I check my nslookup results, I am observing weird ...
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36 views

Static routes in ISC DHCP

I have an Ubuntu 14.04 server at home running bind and ISC DHCP. Bind is caching from unblock-us.com so that I can get access to US Netflix content. This all works fine. I'm running into trouble ...
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1answer
89 views

How to solve routing issue when connecting to VPN?

I am located in the Middle East, and connecting to a VPN in New York. Some time in the past couple of weeks, something appears to have gone wrong with the routing, such that it is now impossible for ...
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1answer
63 views

Subnet Masking vs Routing

To extend a network beyond the amount of 254 hosts, there are basically two options, if I understood it correctly: I could use a second network, having a different network prefix and connect the two ...
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1answer
144 views

Reach a VPN client from a host on private subnet on AWS VPC

I have a setup like the one on turnkeylinux's github https://github.com/turnkeylinux-apps/openvpn/blob/master/docs/site-to-site.rst I have a VPC with public and private subnets, and a NAT instance on ...
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2answers
2k views

Adding static route to OS X Yosemite Failing

Trying to add a static route on my MBP (en0 is wifi, en4 is thunderbolt ethernet). ablair@hayate:~$ sudo route add -host 1.1.1.1 192.168.0.1 add host 1.1.1.1: gateway 192.168.0.1 ablair@hayate:~$ ...
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1answer
506 views

unable to ping my win7 computer from an another computer in different subnet while I could do the opposite

subnet A(192.168.137.0/24) has P(192.168.137.1) and Q(192.168.137.2) computers subnet B(192.168.7.0/24) has Q(192.168.7.1) and R(192.168.7.2) computers P is my windows 7 computer connected to ...
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49 views

Adding a static route for gmail?

I have my PC (windows7) on two networks - WiFi Hotspot and LAN at the same time. I would like to add a route on my PC such that requests to gmail go to the Wifi Hotspot and everything else to LAN ...
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68 views

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 ...
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1answer
43 views

Application specific routing table in linux

I've two systems A and B with different network provider but connected to the same switch. Suppose IP of A is 0.0.0.10 and IP of B is 1.1.1.10. I can make them connect locally or over internet by ...
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65 views

Dynamic Routes at Home Router

I am currently using a linux box as my home router (PPPoE to my ISP and NAT, etc). Some websites are blocked in my country (don't say the name out loud), so I have another PPP in my router to a VPN ...
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1answer
76 views

Cisco AnyConnect VPN peculiar routing

I have noticed that when my VPN connection (Cisco AnyConnect 3) is active, I have the following routing entry: Persistent Routes: Network Address Netmask Gateway Address Metric ...
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174 views

VMWare Player bridged guests can't see host on network

I have a Windows 7 Ultimate 64-bit machine running 3 VM's on VMWare Player 6.0.3. The host is not able to communicate with the guest machines, however the guests are able to communicate with all other ...
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33 views

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
42 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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32 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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116 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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965 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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60 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
55 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
71 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
117 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
137 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
189 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
124 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 ...