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

learn more… | top users | synonyms

0
votes
0answers
11 views

How to prevent the pppd to remove the default route?

We use multiple providers, one of them to create connection uses pppoe through pppd daemon on ubuntu 14.04. Early without multiple providers pppd manages default route by itself (creating it when ...
0
votes
1answer
2k views

Configuring Shorewall for routed OpenVPN

I have an Ubuntu server 14.04 machine that serves as a NAT router. The routing is achieved using Shorewall, mostly in line with this tutorial. The LAN has the subnet 10.0.0.0/24 On this machine I ...
2
votes
0answers
38 views

OpenVPN Access Server: Remote Subnet Cannot Access Client's Resources

I have OpenVPN Access Server running. Here's the configuration: 172.18.16.0/20 Client (172.18.16.101) ----- OpenVPN Server (172.16.0.0/20) | ...
0
votes
1answer
32 views

Setting up a virtual IP for high availablity [on hold]

Disclaimer; I'm completely new to server maintenance, availablity and clustering. I'm trying to achieve a high availablity server cluster configuration (failover, no load-balancing). I have two ...
0
votes
0answers
23 views

Machines disregarding default gateway

Our gateway is a router which redirects all browsing traffic to a proxy server (Ubuntu 14.04.3). Proxy server then process and sends the traffic back to the router through a different interface. Proxy ...
1
vote
1answer
23 views

ssh from Server to Client through PPTP tunnel

I was able to set up a small PPTP VPN with a Server and two clients. All machines run Ubuntu 14.04. The connection works great and is reliable. I can ping all machines from everywhere. Also HTTP ...
0
votes
1answer
29 views

OpenVPN and gateway on linux [on hold]

I have home server with Debian installed When I turn on openvpn it creates new interface - tun0 It also adds some routing rules for that interface, including 0.0.0.0/1 via 192.168.101.1 dev tun0, ...
0
votes
0answers
9 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, ...
3
votes
1answer
78 views

How do I enforce preferential routes with BGP & Quagga?

I have two routers that I'm setting up currently and they will be feeding my network of servers with a private AS number provided by the datacentre. What I want to do is provide both a VRRP failover ...
0
votes
1answer
947 views

Pfsense PPTP VPN Error 806

I was previously using another firewall software and simply by port forwarding port 1723 from the ADSL interface to a Windows Server attached to the LAN, we were able to VPN in. Since switching to ...
1
vote
0answers
35 views

Ping not reaching in OpenVpn clients to subnet and vice versa

I have a vpn server which is connected to vpn client having ip 10.30.0.x now. I want it to able to ping another private client connected to vpn server. Please note that other private client is private ...
1
vote
1answer
554 views

Creating a multi-wan/isp failover router where wan IPs are dynamic on Debian

I'm having an incredibly hard time creating a basic router on Debian which has connections to two ISPs where the ip addresses are dynamic. I don't need bonding, I really just need some way to detect ...
-1
votes
0answers
9 views

Can't ping Subnet A from Subnet B with router between them [migrated]

I experimented with subnetting in my home network and Raspberry Pi. The ISP Cable Modem has 4 eth-interfaces and 1 wlan interface which all seem to be switched together. The routers IP is 192.168.0.1 ...
0
votes
0answers
16 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 ...
4
votes
2answers
2k views

IP Routing - how does it work again? [closed]

Can someone explain how IP routing works to me? E.g. if I ping 123.123.123.123, how does each router know which way to go as shown in a traceroute dump.
0
votes
0answers
17 views

Changing source MAC address of routed packets

I have linux box with one network interface and IP forwarding enabled. Let's say my IP address is 192.168.1.1 and MAC is 11:11:11:11:11:11. When a packet which is not targeted for my host arrives, it ...
3
votes
0answers
131 views

Linux device route without broadcast

I have the following setup: A network namespace, ns1 A pair of virtual interfaces, ns_ext1 and ns_int1. ns_ext exists in the global namespace, and ns_int1 exists in ns1. A GRE device, gre1, which ...
1
vote
1answer
56 views

Packets being routed to the wrong IP

Looked around, can't find a similar issue anywhere... I have been having some very strange and hard to explain problems on my network lately, and in my efforts to find the cause, I came across an ...
0
votes
0answers
38 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 ...
1
vote
1answer
27 views

Dest host dont accept UDP when there is no route to source

I have three hosts with following config: Host A: IP:192.168.1.1/24 Host B: IP:192.168.1.2/24 Host C: IP:192.168.3.1/24 Everything happens on CentOS 6, and all interfaces are VLAN tagged (if it ...
1
vote
3answers
1k views

Ubuntu Server, 2 Ethernet Devices, Same Gateway - Want to force internet traffic through 1 device (or at least allow it to work!)

I have a Ubuntu 10.04 Server with 2 ethernet devices, eth0 and eth1. eth0 has a static IP of 192.168.1.210 eth1 has a static IP if 192.168.1.211 The DHCP server (which also serves as the internet ...
1
vote
1answer
8k views

Setting up routing in CentOS 6.4 as a router/DHCP server with two nics

I am stumped about how to setup centOS 6.4 to route packets. |Local Network| -eth0- |CentOS 6.4 box| -eth1- |Internet| The centOS box has a dhcp server running. Currently it is handing out IP ...
0
votes
1answer
26 views

Can't communicate out of VM instance for Modbus TCP/IP over port 8080 - routes poosibly required

I have used Google Cloud Developers Console to set up a Windows 2012 Server. I am trying to use this a web server for monitoring hardware utilising Modbus TCP/IP. I have installed a SCADA software ...
0
votes
0answers
11 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 ...
2
votes
1answer
23 views

Connecting two clients openvpn

I have two clients one connected to vpn server through vpn and another without vpn. I can ping both the clients from my server but I can't do directly using one client to another. I am adding route ...
1
vote
1answer
3k views

strongswan VPN on OpenWrt

Hi I'm running Barrier Breaker version of OpenWRT and I have setup a VPN according to: http://wiki.openwrt.org/inbox/strongswan.howto I can connect to the VPN with my iPhone or Mac (to 10.10.1.0/24 ...
1
vote
1answer
586 views

Route Split for OS X

Hey guys. I'm attempting to install a static route for a Mac Pro desktop. I'm using Route Split 1.4, which creates a startup script called /etc/routes.sh (The SH script does actually wait for the ...
3
votes
8answers
6k views

Force Juniper-network client to use split routing

I'm using the Juniper client for OSX ('Network Connect') to access a client's VPN. It appears that the client is configured to not use split-routing. The client's VPN host is not willing to enable ...
1
vote
1answer
14k views

Routing from mikrotik two IP addresses to same gateway

I have 2 static addreses (a.b.c.72/24 and a.b.c.128/24) on gateway1 and gateway2 interfaces. ISP have one gateway a.b.c.1 . I can use a.b.c.72 only on gateway1, a.b.c.128 only on gateway2. How to ...
1
vote
1answer
2k views

Route IP from one vlan to another vlan in the same vrf of the same router

Can you route a IP (/32) from one vlan to another vlan in the same vrf of the same router ? Exemple: example_router#show version Cisco IOS Software, c7600s72033_rp Software ...
9
votes
4answers
21k views

Windows static routes w/o specifying gateway (next hop)

I have the following scenario: Computer A: 198.51.100.8, netmask 255.255.255.0 Computer B: 203.0.113.9, netmask 255.255.255.0 Both computers are on the same LAN segment; no default gateway is ...
0
votes
1answer
32 views

Site - Site VPN using Zentyal (OpenVPN)

I've got some servers in location A which has a Zentyal machine running, lets call it Z1, I then have another Zentyal machine running in my AWS VPC, location B, lets call it Z2. Z1 is connected to Z2 ...
8
votes
1answer
2k views

Windows VPN server can talk to VPN clients, but won't send packets from its local network to the VPN clients

I want to configure Windows Server 2012, and its Windows 7 and Windows 8 VPN clients, with an SSTP VPN that uses split tunneling and off-subnet addressing, but I'm running into a problem: the RRAS ...
3
votes
2answers
965 views

Prevent SSH connection lost after logging into VPN on server machine

I encountered an issue that I can't deal with. When I'm logged onto an VPS over SSH and try to estabilish VPN connection on that VPS, the SSH connection between VPS and my machine get lost. I assume ...
0
votes
1answer
30 views

How can i disable reverse path filter rp_filter in mac

I am following this Ubuntu Linux - two interfaces, same subnet, different vlan - MAC/ARP issues # sysctl -w net.ipv4.conf.eth1/102.rp_filter=0 # sysctl -w net.ipv4.conf.eth1/103.rp_filter=0 But ...
0
votes
1answer
551 views

Multiple VPN connections on the same Computer at the same Time with the same Subnets

What's the best approach for such scenario? : One machine „GATEWAY” SERVER with configured multiple VPN connections. PC1, PC2, PC3, PC4 are the clients that with the same time wants to connect to ...
0
votes
1answer
3k views

How to route traffic over an active VPN tunnel by domain name?

I set up a VPN tunnel to my web server targetting its FQDN: (e.g. my.server.com) using the built-in Windows 7 VPN feature and the built-in Windows 8 Routing and Remote Access (RRAS) VPN feature. How ...
3
votes
1answer
91 views

When is route lookup performed when a packet flows through iptables?

Iptables is often illustrated using diagram I fail to understand when route lookup (routing tables) is performed: inside the "Routing Decision" grey boxes? If so, does it mean a packet is routed ...
0
votes
3answers
1k views

Simple OpenVPN setup on Windows Server 2003 SBS with RRAS

I am trying to set up the most basic VPN configuration with OpenVPN. The server is Windows Server 2003 SBS. A typical client system is Windows 7 Professional. The server has two physical NICs (WAN ...
0
votes
1answer
30 views

Iptables not routing GRE protocol

First things first, there might be a few English errors, considering it's not my native language. I'm having a problem with VPN(GRE protocol) passing through Iptables. I've done this at least a dozen ...
0
votes
1answer
25 views

No internet access when toggling `redirect-gateway` in OpenVPN client config

I have a router with IP 192.168.1.1 subnetting 192.168.1.0/24. On that subnet, a Synology NAS has an IP of 192.168.1.181 and is running a VPN server using subnet 192.168.2.0/24. When I connect a ...
0
votes
2answers
973 views

Application request routing and load balancing

I use Application request routing in my farm environnement. I got 2 ARR server and 2 IIS server in my farm. I configure my routing to load balance request even to my iis server, but when i look ...
0
votes
2answers
65 views

Hyper-V host with one External IP address. How do I assign guest VMs an internal IP and configure NAT?

I've been struggling with this for a few days now, I've got a Hyper-V host with one statically configured external IP address. There is no DHCP server or internal network to retrieve an IP. How do I ...
3
votes
1answer
115 views

how to realize a traffic volume limit with linux

I am helping to organize a little conference. There is no internet connection, so we are limited to a mobile LTE connection with a limited volume. We have a Ubuntu-based server that acts as a router, ...
0
votes
2answers
38 views

Can I access a NAT addressed host behind a gateway from the WAN side without DNS or VPN (with DNS if it's not possible)?

I have a very simple gateway running a minimal Linux which is serving as an IP router with NAT and DHCP on the LAN, and a static IP on the WAN. The gateway router from the LAN side goes to a big ...
1
vote
1answer
86 views

Routing all traffc though OpenVPN on Windows

I have problems with routing ALL windows traffic thorough OpenVPN tunnel and tried to solve this issue for hours. However, most advices about it did not help in my situation. I have OpenVPN ...
0
votes
0answers
17 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 ...
3
votes
3answers
4k views

How can I achieve OpenVPN client routing without NAT on Linode

I've set up an OpenVPN network, and it is working properly in the sense that I can access the inner/LAN machines from the remote client. However, my problem is that all traffic from the remote ...
1
vote
1answer
1k views

Pfsense OpenVPN Site to Site Routing issues

I know this question has been asked a plethora of times before and I have looked over probably 100 different answers and still cant seem to get this to work. Im trying to create a very simple site to ...
0
votes
1answer
26 views

Two-way routing for router and openvpn server subnets

I have a router with IP 192.168.1.1 subnetting 192.168.1.0/24. On that subnet, a synology nas has an IP of 192.168.1.181 and is running a VPN server using subnet 192.168.2.0/24. When I connect a ...