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

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Why might one host be unable to access the Internet, when it can ping the router and when all other hosts can?

I have a Draytek Vigor 2830n. It's kicking out a 192.168.3.0 LAN. It performs load-balancing across dual-WAN ports, although I've turned off the second WAN to simplify testing. There are many hosts ...
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98 views

Linux iptables NAT

So I need to setup a server that servers a NAT server for IPMI network xxx.xxx.xxx.xxx = external IP(internet IP) aaa.aaa.aaa.aaa = internal IP A bbb.bbb.bbb.bbb = internal IP B User 1 -> ...
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3k views

Setting up Windows Server 2012 Foundation to route all Internet traffic through an OpenVPN connection using RRAS

First of all I'm not (yet) a fully trained IT professional but just a college student so please forgive me if some of the things I'm about to ask might seem "stupid" because the answers are totally ...
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88 views

Smartphone conflicting with LAN?

Recently, I've been having sporadic problems with internet connection on some computers. It turns out that an IPhone, when connected to the wlan, was causing this. These computers with Internet ...
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42 views

Redirecting OpenVPN Server routes towards other VPNs to clients

I have an openVPN Server that share a network in tun mode, the main network that it share is on the class : 192.40.190.0/24 . The config file that I have on the Server is like the following : local ...
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3k views

OpenWrt on TL-WR1043ND - VLAN to VLAN communication

I have this network configuration at home: 3G Wifi router - for access to internet, 192.168.1.0 subnet Router TP-Link TL-WR1043ND - OpenWRT (12.09), 192.168.2.0 subnet, connected wirelessly via ...
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502 views

Using iptables to route all internal data to tun0 from eth0

Looking for a few answers ;) I'm running Zentyal on a gateway. The gateway is also an OpenVPN client, to a server I run out of another country. Interfaces are thus : External : eth1 (dhcp from the ...
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1k views

RRAS PPTP VPN Connected but not get ping my local LAN

Two days back i had configure RRAS VPN server on Windows server 2008 Std R2 with two (LAN (192.168.100.173 with 255.255.255.0 subnet, without gateway,no DNS -- only ip Address was there) / WAN ...
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428 views

Server routing and vtun on Ubuntu Server

I have an Ubuntu 12.04 LTE virtual server, kernel 2.6.32, and a VPN with vtun running. In the VPN, the server is 6.6.6.6, and the two clients are 6.6.6.29 and 6.6.6.35. If I ping 6.6.6.6 from any ...
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792 views

OpenVPN Client-specific routing when using username/password authentication

So I have an openvpn running on a debian machine and I have set it up to work with PAM authentication via the pam module AND NOT the provided example script. However, requirements changed and now I ...
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117 views

NAT Public ip to that many number of pvt ip

i have a Linux box with two interfaces one with ip 10.10.18.2 and other with ip 192.168.1.2,192.168.1.3 aliased. A xen host is connected with ip 10.10.18.3 and gateway 10.10.18.2 to this through a ...
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2k views

How to enable source-based policy routing with pfsense

I'm trying to setup pfsense to use WAN1 for all LAN traffic except when a computer has been added to an alias I labeled "PRIORITY". Those computers use WAN2. On the firewall rules, I set a LAN rule ...
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319 views

OpenVPN routing without affecting host routing table

I have a Linux OpenVPN server with two clients, A and B. I've set these up with client-to-client so they can talk to each other. I want to make client A to be the default route for client B so that B ...
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442 views

Clear OS Community and packet time out in client machines only

I am having Clear OS Community Edition running as router with 2 network interfaces. Interface eth0 is connected to LAN with ip 192.168.122.2 and interface eth0 with ip 192.168.2.2 is having internet ...
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157 views

No external src ip in log files (my router ip appears instead)

I recently retired my workhorse WRT54G router/AP in favor of a Linksys EA2700. Since then, all inbound traffic (bound to an Ubuntu 10.02 box running LAMP)logged to Syslog, Apache's error and access ...
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74 views

Precenting ISP IP leakage using VPN gateway service

I read a post here on serverfault detaling a procedure to re-route gateway traffic to a fake gateway to prevent ISP IP leakage if VPN dropps. My questions to adapt this prcedure to my specific needs ...
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175 views

Configuring linux gateway to forward packets

I have a windows box with a wireless card (ip 10.10.96.22) configured with a default gateway of 10.10.96.21/24 (this is my linux laptop's wireless ip). From the Windows box I can ping my linux laptop ...
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134 views

AP Clients not pingable from outside

Here's a rough scheme of my network: - http://i.stack.imgur.com/zrlJJ.png The network is divided into VLANs. The linksys device is connected to a VLAN20 access port. Clients 4, 3, 2 ping the rest of ...
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293 views

503 Error After Microsoft Request Routing Is Installed - 32 bit 64 bit madness

I have a requirement to install the Microsoft Request Routing component for IIS 7.5 running on a Windows 2008 R2 SP1 64Bit machine. After installing Microsoft Request Routing via the Web Platform ...
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207 views

Advertise iBGP learned routes to sub-AS confederation peer

I am having a difficult time figuring out one of the fundamental rules of iBGP, eBGP, and confederations. Consider the following routers which are all in the same Autonomous System (AS) r1 == r2 ...
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483 views

Checkpoint NGX FW1 Routing Between Networks

We have an old Checkpoint NGX FW1 firewall which we have to maintain. For the most part we leave it alone and it just chuggs away and works. The person who originally set it up left years ago and ...
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91 views

Divert TCP connection

I am trying to divert a TCP connection. Given a client (C) which is connected to a router R and two servers (S1 and S2) are connected to the router, C initially connects to S1. I am trying to write an ...
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86 views

shorewall prevents routing from protected zone entities to other protected zone entities

I'm using shorewall as the firewall and gateway for a production site. The site also has a couple of VPNs running into it that are hosted on a different server on the same site (in the protected ...
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452 views

OpenVPN not routing on DD-WRT

The problem is pretty easy to explain, basically I have 2 tunnels open on the server. 1 tunnel goes to our main office so I can manage the company servers. Another tunnel goes to our branch office ...
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656 views

Where is HP Procurve route type “ICMP” coming from?

I've got the following test network: Architecture: edge_a: 192.168.e.1 [edge vlan] (edge switch, no acl) [admin vlan] 192.168.m.1/24 core: 192.168.m.2/24 [admin vlan] (core router, yes acl) ...
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109 views

IIS7.5 non-http port routing

I am trying to use IIS7.5 as a way to route to vnc on different servers or virtual servers. I cant get http to work but not non-http protocols like VNC, telnet, etc. Is there a way to do that? ...
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130 views

reconfigure vpn from cisco to juniper

Right now I have a vpn from a cisco router (ASA 5505) with a network 192.168.1.0/24 connectiong to a Juniper firewall (SSG-520) with a network 192.168.100.16/28. I want to reconfigure the subnet on ...
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322 views

Exchange 2010 org subdomain mail routing fail

I have a central setup with EX2010 and with a separate system as an edge transport, serving email addresses for aa.domain.com and domain.com. For some reason, this means I am unable to send email to ...
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861 views

How to use Ubuntu PPTPD as Gateway?

I just set up Poptop on our Ubuntu 10.04 server so we could use it as a VPN. I can connect to the LAN through PPTP but I can't use it a gateway (I needed to uncheck the "use default gateway on remote ...
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15 views

Possible routing issues with OpenVPN

I'm trying to use OpenVPN on my arch box to be able to route some traffic through an OpenVPN connection, but not all traffic. But I'm having trouble trying to use my OpenVPN tunnel when using for ...
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14 views

Ubuntu 14.04 VPN metrics

I have been using VPN on Windows server 2008 R2 daily. The problem came when I manually installed Ubuntu on my notebook (Ubuntu 14.04). It prefers first connected network interface if IP ranges are ...
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14 views

Ubuntu 16.04 LXD No any communication between guests and master

Welcome. I had a little problem with my LXD server. On my master I have some guests systems (ubuntu 16.04 image), all of them are bridged to master and are in my local subnet at home, and have an ...
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13 views

SAVE default scope global nexthop in CENTOS 7

I have two internet connections from two different ISPs and I need to balance & failover the traffic originating to and from my network between the two ISPs. My settings: FIRST ISP (eno1): ...
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25 views

VoIP NAT to connect to companies of the same ip address range together

I am currently using packet tracer to configure the network for Company A. I have configured DHCP and telephony service successfully but the problem I'm facing is when company A tries to contact ...
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24 views

Packets dropped connecting to Azure VM through Point-to-Site RM Gateway

I've setup a point-to-site Virtual Network Gateway using the Resource Manager model. I followed both of these instructions: ...
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22 views

Internet throught VPN in local network, using windows 7 as router

I have windows 7 (192.168.1.0/24) using as router in SOHO network. Everything works fine until I'm creating openvpn connection on windows 7 (10.0.0.0 mask 255.255.255.252). Windows 7 machine has ...
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12 views

How to make a local interface, accept a packet that's coming from another local interface which is destined to the first one

before starting, let me say that I'm not talking about ip forwarding. ip forwarding is enabled and working. My problem despite being hard to explain in one sentence, is rather simple, and yet it seems ...
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30 views

Cisco 3750 intrer-VLAN routing not working

I've defined three VLANs on my 3750 switch. I've also enabled the routing on it. It is a standalone switch. But the routing is not working between the VLANs. I don't know what to do. There is the ...
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17 views

Iptables linux routing with 2 chain proxies

Im trying to setup a connection between a PCs in my local network, to foreign resource XYZ in a specific way. My network is currently configured like this: I have a pc behind the proxies -> Then I ...
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32 views

Codeigniter links not working without index.php

I have a code igniter application that used to work properly in wamp, but after shifting to lamp it stopped working normally. Also I have used Modular Extensions to make my app follow HMVC Only the ...
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26 views

SSH to OpenVPN Connected System AND Tunnel through VPN

I want to SSH to a Docker system running Debian (latest), with OpenSSH, and OpenVPN installed. I also want to create a Dynamic forward (SOCKS proxy), and I want it route through the VPN connection as ...
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13 views

Two(one OpenVPN) Networks Routed to Two Seperate Interfaces

I currently have a working network configuration. It is setup so that my Debian router connects to my modem, grabs an IP from DHCP using the physical eth0 interface connected to the WAN port on my ...
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20 views

Force routing to a gateway when pinging self IP

I will try to explain my problem the best I can, and maybe there is a better solution. I got a topology that includes a host and a gateway. Also I got an application with both client side and server ...
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27 views

Port forwarding with different gateway

Here is my current setup: Public IP -> Iptables firewall_A with DNAT from Public IP to -> mail server Iptables rule: iptables -t nat -A PREROUTING -d PUB.LIC.IP.ADD -p tcp --dport 25 -j DNAT ...
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14 views

Problems with Mobile IP VPN and aitwach / app

i have this setup: Some Android devices configured with IP Range: 192.178.10.X - connected over 3G with Mobile IP VPN (mobile IPSEC Tunel / VPN). Endpoint is a static ip. My router configuration ...
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64 views

systemd-networkd multiple ip and gateway using single interface

How to achieve multiple ip and gateway with systemd-networkd? When using ifconfig, route, andip`, it's something like this: ifconfig eth0 222.124.201.x up netmask 255.255.255.248 up ifconfig eth0:0 ...
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164 views

IPv6: Destination unreachable: Address unreachable

My server can't ping/reach any other outside. ping6 works for my local fe80::468... address as well as the 2a01:4f8..., but not for fe80::1! Errors/Troubles/Issues: ip neigh show fe80::1 dev eth0 ...
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50 views

Nginx folder redirection without changing the url

I want to redirect an old path to a new one without changing the url and keeping the suffix of the url for the redirection: dev-osm.blah.com/NYC/v2/site/links?key=a12345 redirect to ...
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20 views

I want a connection to a (PLC) webserver reachable @ 10.0.0.10 via 2nd NIC (10.0.0.1), but on 1st NIC another 10.0.0.10 host is also reachable

I have a PC with 1st NIC for company intranet and internet (gateway defined, etc.) and a second NIC 10.0.0.1 where I want to reach my PLC webserver directly connected at NIC 2 and having IP 10.0.0.10 ...
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39 views

Strange default route. 0.0.0.0/0 to 0.0.0.0 appearing

Debian 8 on a beagleboneblack, fresh install. I bring up the network devices via the usual /etc/network/interfaces and the network initially comes up correctly. A few moments or minutes later ...