the process by which data packets on communication networks are forwarded into the direction of their ultimate destination by routers.

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3
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0answers
78 views

timing issue after route add/delete (route not used)

I have an application that is running a raw IP socket, destination of this socket is governed by routes installed via the 'ip route add' command. These routes can change during the lifetime of a ...
0
votes
2answers
62 views

OpenVPN client as gateway for other clients

I have OpenVPN network with one server and two clients. When I setup my default route on C1 to go through S (which does have ip forwarding and NATing enabled), everything works as expected. The ...
0
votes
2answers
110 views

Accept incoming connection from a second gateway

I searched a lot about the question, but can't find solution for my situation. We've got a Windows 2003 server that runs Advantage Database Server (ADS) through which our site connects to our ...
-2
votes
1answer
37 views

networking - Dedicated NIC for different traffic

I have two servers which acts as a reverse proxy which accept incoming requests from internet and passes on to application servers, then responses from the application servers are then served to the ...
1
vote
1answer
47 views

How to route requests to correct LAN card

I am trying to make a ping request to a 192.168.1.x address on my network, but the request appears to be routing to the wrong LAN card and timing out; I have a VM with 2 LAN cards setup as follows ...
0
votes
0answers
45 views

Racoon IPSec tunnel VPN - can connect to everything, except VPN host

I've got an Android client connecting to a racoon IPSec VPN endpoint using Xauth and PSK. Everything pretty much works as expected - the client can ping the internet and can also connect to other ...
0
votes
0answers
38 views

OpenVPN - Routing from one VPN into another

I have the following situation. I have a root server, which acts as a VPN server for my company network and as a VPN client to multiple customer-networks. Every seperate connection works (I can ping ...
0
votes
0answers
55 views

How to set mark on packet when forwarding it in nat prerouting table with rp filter 0?

I have a serious problem with my server ubuntu 13. I have two ADSL lines and an internal network as follows. i.imgur.com/v4ddHXf.png (URL IMG) IP redirections made ​​two because there are two older ...
2
votes
1answer
127 views

iptables: access connected openvpn client from the LAN with the VPN server

I have what is essentially a routing problem, and I'm not familiar enough with routing and iptables to effectively troubleshoot and set up my network needs. What's working I have an openVPN network ...
0
votes
1answer
88 views

Route traffic to some host in Internet via VPN server

I need route traffic to some host in Internet via VPN server. Configuration: Computer: ubuntu-12.04 eth0 - x.x.x.x/24 tun0 - inet addr:10.8.0.6 P-t-P:10.8.0.5 Mask:255.255.255.255 There is ...
0
votes
1answer
132 views

How to forward traffic to VPN device

I have set-up OpenWRT in a virtual machine which acts as a router. It has two network interfaces: br-lan: connected to vm internal network eth1: connected to internet through host via NAT I have ...
0
votes
1answer
30 views

Can I assign a virtual interface (VPN) to a 'real' interface / NIC of my choice?

I have a small server , running MINT linux with two NICS (eth0 and eth1) and I'd like to setup the MintBox as a VPN client to connect to a web-hosted VPN server. All works wonderfully on the VPN ...
2
votes
1answer
208 views

OpenVPN not redirecting all traffic through VPN

I have just finished setting up my VPN, and google shows my IP to be that of my VPN, so this works fine. However, when I log in through SSH to the VPN server, it shows my last login to be that of my ...
0
votes
4answers
59 views

What can be done to migrate network applications when the client configuration cannot be changed?

We have a number of situations where a client application needs to be migrated from one host to another in an active production network. The servers continue to run other applications. The problem is ...
1
vote
2answers
52 views

Guest OS provide internet access to another Guest through Host-Only adapter

I have a set-up like this: Ubuntu (Host OS) OpenWRT(Guest OS) | Damn Small Linux(Guest OS) OpenWRT is connected to Ubuntu through two interfaces, eth0 via NAT (for internet) and eth1 ...
0
votes
1answer
68 views

OpenVPN not redirecting

I've tried to follow the official documentation, but I can't seem to get it to work. In my /etc/openvpn/server.conf I have push "redirect-gateway def1" push "dhcp-option DNS 8.8.8.8" set and I ...
1
vote
1answer
101 views

OpenVPN - VM-Setup with MacVTap, ICMP echo works, TCP/UPD don't

Short résumé No errors, no dropped packets, pings reach clients, tcpdump shows packages travelling, everything else never reaches the LAN hosts (or OpenVPN clients). Edit After trying to eliminate ...
0
votes
1answer
58 views

Routing traffic through a virtual machine [closed]

I have OpenWRT running in a virtual machine. It's network adapter is bridged to the host. Host ifconfig root@michael-VirtualBox:/home/michael/Scripts/python# ifconfig eth0 Link encap:Ethernet ...
0
votes
1answer
45 views

If one SMTP Server is down, routing all requests to another, how to achieve?

I have an application which uses e-mail notifications at many levels, so if an SMTP Server is down, I get in trouble. I can't switch the SMTP adress in all my configs fast, or lets say even don't want ...
2
votes
0answers
69 views

xenserver vm routing fails half the time on the same network

I recently switched from openstack (due to complexity) to xenserver at work, I ran into an issue that I can't solve, I can ping the server all the time but the vms part of the time. here is a ...
1
vote
1answer
52 views

How to make UNC access to a different network?

I'm running a virtual machine (VMWare/Fedora 12) on a server(host). The virtual machine has a running webserver on port 80, is on southpawtech network domain (different from the one on which the host ...
0
votes
1answer
203 views

OpenVPN split tunel

I've been trying to set up vpn just for one specific ip address. What I want is to have so all traffic that is sent to single ip ( 1.2.3.4 for now ) would go through openvpn client. My current ...
0
votes
0answers
48 views

Issue with routing across two networks with DHCP and NAS involved

I have a Linux network set up with three sub networks 192.168.1.0 (chaos), 192.168.3.0 (chaos-hs), and 192.168.5.0 (ute-netz) with three machines casimir, ute, raspberry, a nas server nas and a router ...
0
votes
1answer
84 views

how to forward all traffic on specific interface to ip address

I have one Linux machine that have 2 interfaces. The first one is used as a default one and provides access to internet, the second interface was added as a dedicated link to send packets from tcpgen ...
1
vote
2answers
290 views

How to configure and enable NAT with server core installation

Using Microsoft Server 2012 Core: What is the equivalent core/Powershell command to enable and configure NAT. I have configured NAT on servers with the following GUI steps: Server Manager, Tools, ...
0
votes
0answers
33 views

No such device error when trying to create IPSec tunnels

I'm trying to establish parallel tunnels between the same two routers, each of which route traffic from slightly different subnets. I can always set up the first tunnel without a problem, however when ...
1
vote
0answers
64 views

Debug: Cisco VPN Router runs 100% CPU

I've turned logging on and all I am currently getting are Debug/Kernel logs. Nothing above debug. This was also during offsite hours when hardly any traffic was going on. I have also upgraded to the ...
0
votes
0answers
33 views

simple subnetting, regarding vpn

i am using 2 cisco rv180 to build up a ipsec tunnel. thats working. but i cant get any packets trough the tunnel. first i was using: local: 10.0.0.X 255.0.0.0 remote 10.0.1.x 255.0.0.0 but 0 ...
0
votes
1answer
57 views

Routing between two PC

I have two computers connected by wire directly: PC-1 ============= PC-2 PC-1 configuration: IP Address: 192.168.1.1 netmask: 255.255.255.0 PC-2 configuration: IP Address: 192.168.1.2 ...
0
votes
0answers
185 views

Using OpenVPN only for specific applications on Linux

I have a working PPTP VPN with very specific routing requirements that I need to replace with OpenVPN due to issues with our ISP, and I am having issues adapting my routing rules to OpenVPN. I only ...
0
votes
1answer
62 views

Trying to add IPv6 route returns an RTNETLINK answers error

On CentOS 5.10 I'm trying to add static IPv6 route via external GW (6::a0c:34a) as follows: ip -6 route add 12::/64 via 6::a0c:34a dev eth1 The above returns a RTNETLINK answers: Invalid argument ...
-1
votes
1answer
61 views

Trying to RDP to Windows machine using iptables

I am a newbie to iptables. Sorry for the basic question. I am trying to connect to a Windows Machine using Microsoft's "Remote Desktop Protocol" This service uses TCP Port 3389. My Linux server is my ...
0
votes
0answers
21 views

SonicWall VLAN Device Redirection

I have a device (Network Attached TV tuner) I use on my X0 VLAN. I have a wireless (W0) device that I would like to be able to access this device on my VLAN. The problem is right now the devices ...
0
votes
2answers
52 views

Routing to different networks but same IPs and subnet [closed]

My issue is like this: From our network, we have to connect to different client networks and their internal LAN is not defined by us. Every client is connected through separate IPSEC GRE tunnel on ...
0
votes
1answer
34 views

arpspoof: fetch packets of different gateway

I have to test a network which have 5 different gateways. I am connected to one of the gateway and I am able to ping the other gateway in the network. It is possible to generate fake arp request using ...
0
votes
0answers
43 views

Redhat 6.1 LVS (DR) over private subnet

I am trying to run LVS on RHEL 6.1, but with traffic from the routers to the real servers over a private subnet. with direct routing (behold this drawing: http://i.stack.imgur.com/aJ22w.png) ...
2
votes
1answer
198 views

Dual ISP Inbound NAT — Asymmetric routing

routing question here. In a dual ISP scenario is there way to use both external IPs and nat them to a web server in a higher security level? The issue I am running into is on the return path for ...
0
votes
1answer
37 views

Website traffic divert and remove the information in website [closed]

We hosted a website through the help of an private company(PC). Our information is available in the website. We terminated the services of the PC for certain reasons. The login and password of the ...
1
vote
0answers
200 views

Connect to ESXi from vSphere Client (different subnet, Internet) [closed]

How can I connect through vSphere Client installed on my laptop (Linux Mint 15 and Windows 7) to EsXi 5.5 installed on Dell PowerEdge R210 Server? I have a router, Netgear WGR614. They're in a ...
2
votes
1answer
557 views

Fortigate VPN Routing issue

I have 200B Fortigate unit with 2 internet WAN connections. I also have a remote site which I'm connected to via IPSEC VPN through WAN1. This site has only one GW IP address. I'd also like to setup a ...
0
votes
0answers
108 views

Multiple virtual interfaces with multiple openvpn interfaces

I currently have 4 interfaces with static IP addresses from the local network; eth0:0 eth0:1 eth0:2 eth0:3 I also have 4 OpenVPN TUN interfaces which are connected to various servers around the ...
3
votes
3answers
542 views

Almost working: How to set up iptables and iproute2 rules on dual WAN linux server?

I have a Raspberry Pi (running Raspbian) with three network interfaces (one ethernet and two USB wifi nics). What I want to achieve is this: I have two WAN connections to the internet (DSL + Cable), ...
0
votes
0answers
40 views

MPTCP router - How can i share access to LAN network?

MPTCP is a emerging protocol that is able to split one TCP session over multiple links. In order to do that the source and destination have to be MPTCP capable. I have configured MPTCP on a linux ...
1
vote
1answer
49 views

Understanding VPN Implementation

The above image shows what I think occurs during an OpenVPN connection. Hosts A and B are connected to the VPN through the VPN server at 1.2.3.4:1194. My question is: if host A wishes to send a ...
1
vote
0answers
24 views

Zyxell USG200 NAT for local computer using wan address

My WAN public address is linked to the server with NAT. How can I set up the firewall to let all local computer use the same NAT rules for www.mypublicaddress.com address from INSIDE the network? I ...
1
vote
2answers
354 views

Tap0 not receiving traffic

I have created a tap device tap0 address 10.2.1.4 and added it to a host bridge br1 with address 10.2.1.1 I have "nc 10.2.1.4 -l 1234" running on the host and from another machine I do a "nc ...
0
votes
0answers
26 views

Webserver with two seperate connections without masquerading?

I've got a QNAP x86 NAS with 2 GBit-LAN interfaces running an Apache Webserver. I've also got two seperate internet connections with two seperate public ip's that have two seperate dns-entries. As ...
0
votes
0answers
36 views

Static Routes for LXC Container

I have set up an LXC Container to have an IP Address from the same Subnet as the Host (i.e. a Bridge Setup) on Ubuntu 12.04LTS. The Host/LXC does not assign any adresses, this is done inside the ...
0
votes
1answer
28 views

Routing public IPs (each a /32) through a VPN to another server

Hopefully the title makes sense; I have a server currently in a colo facility, with many IP addresses routed to it. They are individual IPs and not in a contiguous block. Due to vastly improved ...
1
vote
1answer
56 views

Prevent hijacking IPs in a bridged network (KVM/libvirt)

Is there a solution to prevent a VM user assign/use IP addresses he doesn't own but are routed over the same bridge like his own addresses? The current setup looks like this with libvirt and KVM: ...