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

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Cisco VPN, Site 2 Site Via VPNC Gateway

i may be barking up the wrong tree here, been racking my brains over this. I've been asked to setup a Cloud network which will house a number of services. They asked me to use our excisitng Cisco ...
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1answer
15 views

Destination host unreachable

An user reports issues with wwan0 interface. 4: wwan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether 02:fa:a8:34:86:69 brd ff:ff:ff:ff:ff:ff ...
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1answer
9 views

Redirecting marked packets to Tun device

I have a small program that needs to do various things with a selection of packets, based on various iptable rules. The packets are MARKed this way: iptables -t mangle -d 10.10.0.0/16 -j MARK ...
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1answer
5k views

Manually Setting Interface metric priority of Network Adapters not preferring lower metric route on Windows

After Connecting to Cisco VPN AnyConnect, Now I have two network interfaces having set same default routes, but with different metric values. Even after manually changing/raising the metric value of ...
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11 views

Why would my logged public IP differ depending on the type of server (or computer) I am connecting to?

I am writing a p2p gaming lan emulator that uses the torrent infrastructure to network peers, set up lobbies, etc. Currently, the only infrastructure we are using is the trackers (we plan to us Tox ...
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16 views

Is there any adsl2+ modem with router capability for which traffic routing from one lan port to another can be forbidden [on hold]

Is there any adsl2+ modem with router capability for which traffic routing from one lan port to another can be forbidden for all ports without use of non firm firmware(such as openwrt for D-Link ...
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1answer
33 views

192.168.x.x with Subnet 255.255.0.0, would like to link with 192.168.2.x with subnet 255.255.255.0 [on hold]

Is it possible to connect these two networks together, without changing the subnet? For example by putting a router in between. Network A IP :192.168.x.X Sub :255.255.0.0 Network B IP : ...
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1answer
3k views

Using VPN connection in OSX will only route through the first service in “Service Order”

I am trying to get my VPN connection to only route network traffic related to my workplace through the VPN connection and any other traffic through my Wi-Fi connection. If I have my Wi-Fi at the top ...
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19 views

How to connect to VPN from Linux and send only part of traffic via it

I have target host, username and password. I can connect in Windows via Cisco AnyConnect. But all traffic goes via that tunnel. Under Linux I used to use Vpnc, but it requires also additional secure ...
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2answers
7k views

Why can't I ping a network printer from a specific computer only on the same network?

I have a small home network with a few computers/tablets and a network-enabled printer, all connected through wifi. The problem is I cannot connect (ping) from one specific computer ("A", ...
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16 views

Which configuration files affect the routing table of a Debian system

As far as I know basic network configuration goes into /etc/network/interfaces and the system generates the routing table from these information. I was also taught that in general ...
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1answer
31 views

How to autoconfigure IPv6 route

I configured a simple router that should provide IPv6 connectivity to machines that are on LAN behind it. The router has 2 network interfaces (eth0, eth1), machines have 1 (eth0). On router's eth0 is ...
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1answer
243 views

Re-establish route to localhost on Windows Vista

route -f How do you re-establish a route to localhost after this? I can re-establish connections to the Internet via wireless using route add {wirelessgateway} {wirelessip} if {wirelessif} route ...
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10 views

Passenger issue with Rails routes

I have been tasked with getting a Rails 2.3.14 app running with Phusion Passenger 5.0.7 standalone in FreeBSD 9. Setup is all complete and done, the issue I am facing is Passenger doesn’t seem to ...
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1answer
2k views

Subnet mask separation between 192.168.2.x, 192.168.3.x and 192.168.1.x

My current setup is following: 192.168.1.x is the main zone behind a NAT router of my internet provider 192.168.2.x is another zone, where all my devices live - they are behind another NAT router, ...
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3answers
2k views

iMac OSX “no route to host”

I have an issue with one of my computer on my network. It is an iMac running OS X 10.5.8. The issue is accessing certain websites. For instance, one of these websites is that the computer is ...
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2answers
4k views

Setting up a second router as bridge?

I have a fios router in my basement with wires that connect to it running all throughout my house. At the ends of each of these wires are ethernet outlets (not sure if that's the technical term, but ...
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10 views

Failover gateway using server 2012

I wonder how i can setup server 2012 so that i can use two internet connections in such a way that if one of my internet service providers goes down, that a different gateway is used. If possible ...
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20 views

How to stop route delete 0.0.0.0 mask 0.0.0.0 resetting on reboot?

I've used the command route delete 0.0.0.0 mask 0.0.0.0 which works super: the PC sits on the Local network and can access the other computers and is accessible by the other computers but cannot go on ...
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2answers
2k views

Default gateway 0.0.0.0 on-link

My laptop's NIC went bad and I had to start using a USB Ethernet adapter. When I start up the computer, or even simply unplug and plug in the adapter, it gets two default gateways which show up in ...
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3answers
38 views

Understanting wifi routing and gateway

EDIT : I've found a solution as explain here So I'm completely lost. I'm a real beginner about linux networking. I have 3 interfaces eth0, wlan0, wlan1 (2 wifi usb dongle) on my raspberrypi. My ...
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6 views

Public Webserver sees gateway IP in log

I was given a server with NGINX. It has a public IP with port 80 forwarded to it (I guess assigned in the firewall), but when the requests come, the IP is the one of the Gateway/Firewall. I would ...
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2answers
2k views

Multiple IPs on Multiple NICs same subnet

So, I've got two NICs: eth0 eth1 and I have multiple IP addresses assigned to each: auto lo iface lo inet loopback allow-hotplug eth0 iface eth0 inet static address 10.0.0.194 netmask ...
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1answer
5k views

How to debug Remote Desktop Connection when intranet connection works, but not external

How can I setup Remote Desktop Connection (RDP) when I've exhausted all my known searchable resources? I am attempting to set up Remote Desktop Connection on my Windows 7 Ultimate version and have ...
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2answers
26 views

When is an IP replaced in routing?

If I have 2 networks, 192.168.1.0/24 and 192.168.2.0/24, and my IP is 192.168.1.2 with the following routes: Destination Gateway Genmask Flags Metric Ref Use Iface default ...
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1answer
2k views

Setting default route for tun1: RTNETLINK answers: No such process

I am currently trying to route all incoming and outgoing network traffic to/from applications listening on an OpenVPN tunnel tun1 through said tunnel. Here are my devices: tun0 is an OpenVPN server ...
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2answers
3k views

SSH Connection Error : No route to host

There are three machines in this scenario: Desktop A : user@1.23.x.x Laptop A : user@1.23.y.y Machine B : user@192.168.z.z All the machines have Ubuntu 11.04 (Desktop A is a 64bit one) and have ...
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1answer
16 views

Permanent addition of IP address in route in Linux

How to permanently add route IP address in linux For static/temporary adding of IP address in route I am using route add -net "DESTINATION_IP" netmask gw
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22 views

Route certain traffic through tun0 and some through eth0 based on destination IP

I have the following setup, a linux box with 2 physical interfaces sitting between my modem and my router, on eth0 it is set to DHCP and get an IP from the modem, I then run a DHCP server on eth1 so ...
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1answer
23 views

Two lines with the same ip destination in routing table

I am studing a particular case in routing table. As the title i have this table for a particular router in a net: destin.IP Mask NextHop Interface 193.14.5.160 ...
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3answers
111 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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23 views

Docker tunnel traffic on specific port via VPN

Not sure if this is docker specific or a general networking question. I'm running a Debian Jessie server with serveral docker containers. My understanding is that docker creates a virtual interface ...
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14 views

Networking, Creating subnets

Am having trouble trying to create a small network for my office. I have two Asus RT-N12 wireless routers, internet connection from an ADSL modem, Windows server 2012r2 which I want to be my domain ...
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34 views

2 Nics setup on CentOS 7

I have problem with 2 NICs when I try to setup new webserver on CentOS 7 ==== My goal ==== I have 2 network cards on server, eth0 (for public ip) and eth1 (for internal ip) My goal is my server can ...
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1answer
3k views

Windows 7 Set metric to use 2 different network interfaces at the same time

I'm looking for a way to use at the same time wired and wireless interfaces. My situation: 1 Gbit ethernet interface (10.100.x.x) 1 WiFi 802.11 b/g/n interface (192.168.x.x) The PC is part of a ...
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1answer
66 views

Multiple Gateway, for VPN and Internet

I'm pretty new as a system administrator and I've got a problem to deal with in my company. We recently got a VPN and it is working great, I already tested it and all is good. Now in my main site, ...
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36 views

How to redirect all traffic from one network interface to another on the same linux host

I am writing testcases for a network switch. This involves sending something on one network card (via the switch) and checking that it is received on another network card. I want to disable all direct ...
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47 views

Print 100's of documents to 35 different printers daily

Imagine having ~35 clients that demand that their reports be sent to printers (not faxes, not email), but nice color high resolution printers. You have 20 to 30 reports per client .... so around ...
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1answer
18 views

How is mac address shared from one host to another?

If i have two systems in the same network, how is the mac address shared in the network access layer? By this, I mean how is the destination mac address known to the source?
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31 views

Routing RDP traffic to Windows 7 VM using pf

I have a machine running OS X Server which has a Windows VM running via Parallels. I need to route traffic from the external adapter on port 3389 to an internal/virtual adapter. I have tried quite a ...
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13 views

Cannot set static routing or DHCP pool

I've been doing a project in Packet tracer. To start of, this is my topography: LINK, and this my configuration: LINK My todo list is: -create topography : done -set IP's and subnets : done -set ...
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1answer
49 views

On a host with two IP addresses, I am getting “no route to host”, but SSH works

I have a very strange problem. A server has two IP addresses on a single network interface: eth0 has 172.20.40.1 eth0:0 has 10.1.1.1 The address for eth0 is static, the one for eth0:0 comes from ...
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1answer
5k views

Redirecting or routing all traffic to OpenVPN on a Mac OS X client

I have configured an OpenVPN (2.2.1) server on an Ubuntu virtual machine in the Amazon elastic compute cloud. The server is up and running. I have installed OpenVPN (2.2.1) on a Mac OS X (10.8.2) ...
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37 views

Use two different connections: one exclusively for download and the other for upload: possible? [duplicate]

I hope you can help me with this dilemma. I have two different connections, one is via router/ethernet, the other one is mobile: the first one has a very good download speed, but lacks of upload ...
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2answers
360 views

How to link two routers LAN to WAN

My former modem was replaced by a all-in-one modem/router (10.1.9.1/24) after a speed upgrade. I still have my DD-WRT router (10.1.10.1/24), which I want to be my main router, i. e. as DHCP server, ...
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1answer
35 views

Linux: routing table - Gateway column: 0.0.0.0 vs *?

I have found SO question about What does 0.0.0.0 gateway mean in routing table? but this is not exactly what I want to know. I have noticed that in some outputs (e.g. here) of Linux route -n command ...
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0answers
23 views

Proper network architecture for fault tolerant multi WAN multi building WLAN setup

I need help with deciding the correct network architecture for a guest WLAN deployment. We have 3 buildings, and each of them has its own LTE router (Mikrotik RB411U) connected to an Ubiquiti ...
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1answer
24 views

I can't set up the following Netsh settings, because the object is already exist

I use the Netsh int ipv6 show int in terminal, the result: 1 50 4294967295 connected Loopback Pseudo-Interface 1 11 10 1500 connected Local connection When I wanted to use the ...
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2answers
32 views

Can you assign different default gateways on a per-application basis in Windows 7?

I have two internet connections (one satellite and one DSL). I want to route all my gaming traffic through the DSL connection and all other traffic through satellite. Each WAN is served from its own ...
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1answer
22 views

Forwarding requests to my external IP to a different IP

When I connect to my external IP in linux, it gets forwarded to my gateway (router). But I need to run a server, so I need to be able to forward requests to my external IP to my computers ip address. ...