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

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Linux forwarding packets to remote destinations (not localy)

Network case: Source--Routers ... eth0=LINUX=eth1 ---- some routers.. -- Destination 2.2.2.2 10.0.0.1 192.168.0.1 1.1.1.1 and 1.1.1.0/24 via 192.168.0....
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119 views

Routing to a secondary IP address on the same network interface

I am adding a secondary ip address to my eth0 NIC so that I can experiment with making the machine a router. On the router, ip addr show eth0 gives me: 3: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP&...
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18 views

Disabled Routing and Remote Access

I have disabled Routing and Remote Acces in Windows small business server 2011 standard. Since that users are prompted to enter credentials each time they want to access to a shardrive or network. ...
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101 views

How to route traffic between tagged and untagged traffic on Juniper EX3300 switch?

I have 3 different subnets as below subnet1: 11.11.11.0/24 tagged with vid 1111 subnet2: 22.22.22.0/24 untagged subnet3: 33.33.33.0/24 tagged with vid 3333 now machines in subnet2 want to ...
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156 views

IPv6 VPN routing to IPv4 network

I have been trying to solve my problem to access an IPv6 network from an IPv4 VPN connection for two days now. My setup is as follows: Local Debian IPv4 server <-- OpenVPN --> Remote IPv4/IPv6 ...
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40 views

Route WAN traffic to router which is placed behind switch first

Would be possible to do the following as it is at image? I would like to send all traffic coming from internet to Router with FW first and then to the LAN. I thought this could be achieved by using ...
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90 views

Azure VPN and On Site routing

Edit: I did cleaned up the question to focus on the main and more urgent problem to solve. I create a site to site VPN on Azure and connected it to a Virtual Machine hosted in our Server room in the ...
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94 views

Routing subnets per interface on a dual nic windows server

The server I'm working on has 2 NICs. C:\Windows\system32>route print =========================================================================== Interface List 20...00 50 56 ad 02 3b ......Intel(...
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28 views

Cant configure NAT in iptables

Есть два сервера с линукс. Первый выполняет роль роутера, он имеет два сетевых интерфейса, один из которых подключен к интернету, другой к локальной сети. Второй сервер подключен к локальной сети. ...
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19 views

IP Routing for VPN Failover on ASA - Did I miss anything? Is there another method?

To handle the 4x VPNs I plan to use the following scenario for Routing: Prefered Order for VPN connection: ISP1<-->ISP3 ISP1<-->ISP4 ISP2<-->ISP3 ISP2<-->ISP4 Example Site ...
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30 views

Why, on a linux router, clients can still connect even after the network adapter is down or the iptables routing is disabled?

I have a Linux machine which I use as a wireless VPN router. It has a very classic router setup, whose highlights are: openvpn to connect to the VPN, which is connected to eth0, and makes the tun0 ...
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38 views

Proxmox routed network mit multiple external IPs

I've got the following IP Addresses: **Main-IP**: 85.xxx.109.203 Gateway: 85.xxx.109.1 Netmask: 255.255.255.0 **Additional IPs**: 85.xxx.154.15; 85.xxx.154.18; 85.xxx.154.21 ...
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99 views

cisco 1800 series NAT with secondary IP

I have some troubles doing NAT. If I set up NAT for a particular port, the server replies, but it does so from a different IP address, (specifically from the main IP). If I set up NAT to B.B.B.B, the ...
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117 views

pfSense + OpenVPN: Can not Ping Remote LAN

Problem: I can ping pfSense OpenVPN server from the OpenVPN client, but can not ping devices on the remote pfSense/OpenVPN LAN. Situation description: Below diagram displays my small test network ...
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102 views

Connecting tenants of two OpenStack servers using Openvpn is not working

I have two openstack servers in the same network: OpenStack server 1 having the IP: 192.168.25.9 OpenStack server 2 having the IP: 192.168.25.13 I have a tenant in each OpenStack server and I am ...
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228 views

UFW Router default deny routed and ufw rules

I have an ubuntu 14.04 server running as my internet gateway in front of a dmz and a second ubuntu 14.04 server running as a router between my dmz and internal subnet, both using ufw in front of ...
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145 views

Why does Pfsense not allow me to see clients connected to local network or other VPN clients?

Hi so essentially I want to be able to remote desktop into a client on another network via the web through OpenVPN. However I can not see any of the client that are on the local LAN network. even ...
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56 views

Issue Cisco PIM and multicast routing

I'm in the process or redesigning an IPTV headend that is running on mainly layer 2 (IGMP snooping) to layer 3 (Multicast routing using PIM Sparse mode), this will all be done mainly using cisco kit, ...
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105 views

Cisco ASA 5505 access external IP address from internal

Got a bit of a head scratcher. ASA Version: 8.3(1) ASDM Version: 6.3(1) So I have an ASA 5505 with 3 interfaces (Inside, outside and Hosting). The inside interface has the IP range of 10.0.0.X and ...
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146 views

Route Print shows Interface as “c”

We are having issues with servers that are losing their network access after reboot. When I was looking at route print, I noticed under the Interface it says C. Any idea what this is? Currently ...
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19 views

apache2 returning 403 for DELETE requests

I ran into a strange error with apache2 server. I have multiple virtualhosts configured for my web-app, and I am using context path to differentiate between different apps. All of a sudden, most (...
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119 views

why iptables SNAT doesn't help to answer ARP on the vlan tagged subnet?

I'm using iptables SNAT to setup a "router" on a linux box, it suppose to do NAT for 2 subnets. one untagged subnet 10.0.10.0/24, the other one is vlan tagged subnet 172.16.0.0/24. both subnet come ...
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16 views

Cannot disable return path filter on recent linux

I used to be able to disable all kind of return path filtering by just setting all the conf/*/rp_filter variables to 0 (one year ago, more or less). Now with a recent kernel (4.1) I don't seem to be ...
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156 views

Ubuntu multiple gateways

I have an OVH dedicated server, with multiple virtual machines. I have a pfsense firewall, and an ubuntu machine behind the firewall. So I had a failover IP set using the firewall as the default ...
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48 views

How to route multicast traffic under Ubutun 14.04

I am trying to achieve a very simple goal here, which is to set up a iperf server on my desktop machine to receive any incoming traffic, joe@longbeach:~$ iperf -s -u -B 224.0.0.1 -i 1 ----------------...
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137 views

Ping is happening but arp is not resolved

I am seeing one interesting problem. I have setup two devices connected through lan cable over eth3 interface. Now a vlan session has been created on both the interfaces. Device 2: root@10:~ >...
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29 views

Getting server to reply to client via either network (they can see each other in multiple networks)

I have multiple internal networks, each of them also corresponding to a different VLAN. There's a firewall that acts as the gateway for everyone on every network. It has multiple interfaces, one on ...
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90 views

use of secondary public IP subnet in Sonicwall NSA firewalls

I have a Sonicwall NSA 3500/4500 firewall. I have a primary block of public IP addresses that are working fine but I need to utilize a second block of IPs that are routing over the primary from the ...
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122 views

Different gateway per command

I have a network with multiple gateways and one is set as the default gateway on a server. I want a single specific command to use a separate gateway for all its traffic. How would I achieve that? ...
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103 views

Setup server hosting hyper-v as a router

I have a windows 2012 server hosting several windows VMs by hyper-V. As I was building this infrastructure at home all VMs got IPs assigned from my home router (DHCP). So both hyper-v manager and VMs ...
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28 views

Bizarre routing table name resolution issue with openvpn

I have been having some rather odd issues with my routing table. I am running a Debian Wheezy system, and for a while now, whenever I connect to my home wireless network AND my VPN server, (but not ...
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23 views

Cannot connect two different networks on rhel6 on 2 virtual NIC's

I have a RHEL6 machine on VMware with 2 Virtual NIC's. The output of the ip's and networks are as below: $ ip a|grep "inet" inet 192.168.17.128/24 brd 192.168.17.255 scope global eth0 inet 192.168....
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29 views

Problems with route table with two nics on different subnets

I have an Ubuntu server with two NICs on two different vlans. Both nics are able to reach the internet. The server is an Ubuntu MAAS machine and therefore has pxe and dhcp and such. The DHCP server ...
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66 views

RRAS Routing Shenanigans

I have A RRAS server running on an AWS VPC (10.145/24 network) with address 10.145.0.77. I have a DHCP server/scope set up (10.250/16 network) on a separate Microsoft loopback adapter to offer DHCP ...
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226 views

Adding a remote default route gives SIOC[ADD|DEL]RT: No such process

I have searched the whole web for this but it seems no one has had similar problem. I have a local network (no internet) which my router ip is 10.201.32.10 and my gateway is 10.201.32.41 I have a VPS ...
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577 views

ZyWall USG-100 Firewall block access to internal subnet beyond another router

I'm experiencing a strange problem with a ZyWall USG 100 Firewall, that I can't solve with leaving the firewall enabled on the ZyWall. I have the main network subnet that is 192.40.192.0/24(LAN1 on ...
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66 views

Route traffic based on source IP

I have two routers set up with different WAN IP's from different providers. Both routers have LAN IP's on the same subnet (10.2.2.x) and are connect to a switch. All hosts currently on the LAN subnet ...
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33 views

Auto modify all routes by a specific dev

I have to modify all routes using one specific dev. Not even modify, just append a correct src то the end of a route, like this: x.x.x.x(destination network) via y.y.y.y(MYDEV ip) dev MYDEV(network ...
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186 views

VPN to Windows Server 2012 on ec2 not routing

I have a Windows Server 2012 instance on EC2 so I can VPN into the private network to access machines not exposed via a public IP. I can connect to the Windows Server VPN by its public IP and ...
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206 views

Deploying SSTP VPN on Windows 2012 - How to route packets to other servers?

I've finally managed to deploy an SSTP VPN between my Windows 2012 (non R2) server and Windows 7 client. It's amazing how much easier it work with a real certificate and avoiding the self-signed ...
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131 views

How to set up a Linux gateway for multiple WAN networks?

I have a network with the following IPv4 and IPv6 addresses: eth0 Link encap:Ethernet Hardware Adresse 30:85:a9:42:3e:60 inet Adresse:109.2xx.239.145 Bcast:109.2xx.239.255 Maske:255.255....
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385 views

Return traffic through same interface as entered

I've created a GRE tunnel on my Linux server (VPS, OpenVZ). Server gets a public IP address from this tunnel and I need it be accessible from Internet through it. There is already a default gateway, ...
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836 views

Zyxel GS1920-24HP LLDP-MEP LLDP VoIP

I've edited this post to hopefully conform with what is expected from a question. What i'm trying to achieve I belive is quite simple. I have a Zyxel GS1920-24HP and two routers giving out DHCP on ...
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113 views

Bridge configuration on OpenVZ

I have been using an OpenVZ environment left behind by a previous employee. A while ago I needed to use virtual eth devices to try a specific application. After removing VETH might have misconfigured ...
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131 views

Windows Server 2008, Route LAN IP to choice of Gateway

On my windows server i have a WAN and LAN interface. ON my LAN interface the ip is 10.200.0.1/16 and my WAN has an ip of 192.168.20.100 with multiple gateways192.168.20.1, 192.168.30.100, and 192.168....
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168 views

How to add additional network segment?

Long-standing network (A) is as follows Network A: 192.168.37.0/24 GatewayA: 192.168.37.1/255.255.255.0 (eth1) ADSL on ppp0 (via eth0) Kernel IP routing table Destination Gateway Genmask ...
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109 views

Best way to add multiple IP to single interface

My hosting provider routes an IP block to my eth0 interface. Until today I've been adding the block using IP alias via ifconfig, unknown to me that it was an old solution. I've now learnt that there ...
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347 views

OpenVPN Access Server: Exclude specific IP addresses

I have setup an OpenVPN Access Server (openvpnas) on a Linux box and use the OpenVPN Connect client on Windows. How I could exclude specific IP addresses (e.g. google.com current ip) from routing ...
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271 views

Unable to access intranet web site from client machine

I have installed windows 2008 r2 server on a machine with 2 network cards. I am able to access internet from this server. I have installed mysql and mssql 2008 on this machine. I can access both the ...
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280 views

route vpn over wifi when ethernet is first priority

I have a very special problem and google couldn't help me so far. I usually connect to the Internet via ethernet (en3). For some applications etc I need a wifi connection (en1). So my service order ...