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

4
votes
4answers
1k 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 ...
-1
votes
1answer
50 views

Set default route to virtual ip

I have a Virtual private cloud running on 10.0.0.x. In this network two machines share a virtual ip to provide HA and connection to the internet via aaa.bbb.ccc.164. There configs are: Proxy1: ...
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 ...
5
votes
4answers
4k views

Openvpn, forward packets very slowly

I rebooted my server, and an odd issue just came out. I am running on ArchLinux, the clients are Ubuntu, Android and Mac. The problem is that accessing the internet via the clients is slow, about ...
5
votes
0answers
31 views

Overcome asymmetric routing while migrating between sets of ISPs

We are migrating from one set of addresses to another set, both /24, and trying to minimize any down time during the migration. Ideally we'd run both for a period of time as we shut down the old ...
0
votes
0answers
13 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 ...
2
votes
2answers
1k views

Redhat / CentOS Static Routing

Looking for some advice, I'm pulling my hair out trying to figure this out! Running Redhat (CentOS) with fairly normal configuration and I've disabled the firewall for now. I have a web server which ...
0
votes
0answers
13 views

IPTables SNAT and DNAT - How to choose correct IP Address?

I have a physical host on which I run some virtual machines. IPTables is fully open and unconfigured but I add the following rule so the VMs can access the internet: iptables -t nat -A POSTROUTING -s ...
-1
votes
0answers
14 views

OpenVPN multiple LAN Routing

This is My network topology. Edi and Ted can ping one another Ted and Maria can ping one another Edi and Maria CANT ping one another USA is my VPN server for 19 VPN clients. This is first time ...
0
votes
0answers
29 views

what is the “ip route” equivalent of “route add -host” in linux?

Specifically, route add -host allows me to specify the host via hostname to add a route to a host, e.g., route add -host www.google.com gw 192.168.1.1 However, I cannot find a way to do this using ...
-1
votes
1answer
17 views

sharing more VPN connections on several computers in LAN [on hold]

my LAN looks like this: router 192.168.0.1 router (default gateway, connects whole LAN to internet) pc2 192.168.0.2 Linux pc connected to external VPN No.1 pc3 192.168.0.3 Windows pc connected to ...
0
votes
0answers
12 views

Router OpenVPN client connected, but remote VPN machines not visible

My goal is to connect my Asus RT-68 router to remote VPN network, so LAN computers can access remote ones. Remote OpenVPN server is run on Zentyal Linux distro. My LAN address range is 100.100.0.0/24 ...
1
vote
1answer
4k views

cisco ip nat / port forwarding

I have been trying to get port forwarding working with a newly installed cisco router. I cannot seem to find where my fault is and have been looking for quite a while. The relevant section of my ...
4
votes
1answer
2k views

Windows Server 2008 R2 RAS VPN: access server on internal interface ip

short question: I'm usually a linux admin but need to setup a Win2k8 R2 server for a student project. The server is running as VM on a root server and has a public internet IP assigned. Additionally I ...
-1
votes
0answers
20 views

how to redirect domains to localhost iptables [closed]

i wanted redirected all the traffic on my network to localhost. currently i am trying to use iptables to do so from below command.. iptables -A PREROUTING -t nat -i eth0 -p tcp --dport 80 -j DNAT ...
0
votes
1answer
32 views

Load balancing between two (or more) GRE tunnels

I have a hosted service (think zScaler™) that is having me send my traffic to it via GRE tunnels. I am given two appliances and want to load balance my traffic between the two tunnels. I could ...
0
votes
3answers
32 views

Forward packet to another host in the same network

I have 3 hosts in the same subnet, each host has one network interface: A: 192.168.0.1/24 B: 192.168.0.2/24 C: 192.168.0.3/24 On host A, I just ping host B once. This should generate a packet ...
1
vote
1answer
23 views

Routing via sub-interfaces not working?

I'm trying to isolate outbound network traffic to a specific target for metering purposes, so I thought I'd route it via a dedicated IP address. In order to achieve this I have setup a subinterface ...
6
votes
2answers
24k views

Clear all and only persistent (static) routes on Windows

Is there a simple way of doing this via a shell command / batch ? A VBScript would also be ok.
0
votes
1answer
21 views

accessing another subnet behind proxy

I have squid proxy with dansguardian with ip x.x.1.125 and all computer have this ip as their gateway. Now I need them to access an application on x.x.othernetwork.41 ip. But when I turn on ip ...
1
vote
1answer
117 views

Routed port on BNT 8124 (Blade Networks/IBM switch)

How can I create a routed port on a BNT 8124? I need to create a /30 routed link between the BNT 8124 and a Cisco 4948 I have a port configured with: interface port 22 name "BNT_Routed_Link" exit ...
0
votes
1answer
20 views

DNS requests from a local server to another local server

I have two servers running in one network. External IP of main server: 1.2.3.4 (domain.com) External IP of secondary server: should not be available directly from outside Main server (dns, mx, ...
0
votes
0answers
14 views

overlapping subnets - how to give one precedence?

I have Linux devices with a single ethernet interface and two IP adresses. The first (eth0) is statically configured to 10.1.1.146/24. The second (eth0:1) is configured via DHCP and it may happen ...
0
votes
0answers
19 views

Is it possible to use one WAN for upload only and one WAN for download only? [migrated]

I have a pretty poor DSL connection at my office, especially regarding upload. I was wondering if it exists some solutions to use a 4G WAN for upload only and my DSL for regular download. By doing ...
2
votes
3answers
3k views

How can I prevent OpenVPN from clobbering local route?

I have a local network on 192.168.1.0 with netmask 255.255.255.0. When I connect to a VPN though OpenVPN (as a client), it pushes a route for 192.168.1.0 that clobbers the existing one, making my ...
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 ...
-1
votes
0answers
7 views

How can I create separate/isolated regions on a home network? [migrated]

I currently have a flat network at home. My boradband router comes in and is connected to a switch, which supplies the Ethernet drops within the house. I also have a wireless router connected to the ...
2
votes
2answers
1k views

How access remote network with OpenVPN?

I am currently trying to configure OpenVPN to access our company network remotely. I was able to establish a connection and ping the server at the configured address (10.8.0.1), but I was not able to ...
0
votes
2answers
45 views

Routing traffic to multiple non public IP systems

We are a small startup and one of our basic requirements is to enable cloud access to our core system (running on a basic linux distribution) for our clients that often use a Internet connection with ...
0
votes
1answer
73 views

Dnsmasq , redirect all but google.com

My router uses dnsmasq. In my dnsmasq.conf, I write: address=/#/127.0.0.1 in order to resolv any domain to my local server. It works. Now I'd like to make possible to join www.google.com. Any other ...
0
votes
0answers
23 views

Multiple IP Addresses on EC2 on Same Subnet

I have an EC2 machine which needs to listen on multiple private IP addresses on the same subnet. Each private IP is mapped to a public Elastic IP. eth0 is assigned via DHCP. The alias addresses are ...
0
votes
1answer
25 views

Freebsd 10 install with non standard gateway route

Some service providers offer dedicated/vps nodes with non standard gateways (ie not in the same subnet). For instance : ip add 10.0.1.1/32 with gateway 56.0.1.1 For this purpose some manual steps ...
1
vote
1answer
53 views

OpenBSD routing: Cannot reach gateway from IF configured to static block

When trying to set up an OpenBSD router I've run into an apparent routing problem. I have a 1U machine with 6 gigabit NICs (em0-em5). My ISP provided me with the following: xx.xx.97.246/28 static ...
4
votes
2answers
541 views

IPv6: differences between “routed prefix” and “link prefix”?

What are the exact differences between "routed prefix" and "link prefix" for IPv6?How do these differences in a wireshark-Trace? (if you observe a Host with an assigned "routed prefix" or a Host with ...
0
votes
1answer
43 views

Forwarding IPs to Switch for NAT

I have a Question. We actually have a Cisco 1812 Router and we're Switching to an ASA 5512-X. The Problem is, the ASA 5512-X only has 6 Ports. The 1812, had 8. All in use. We need to translate 3 ...
1
vote
4answers
2k 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 ...
0
votes
0answers
12 views

How to avoid looping of packets while implementing k-shortest paths algorithm in Network Simulator-3? [migrated]

I am trying to implement k-shortest paths algorithm in NS-3 for IPv4GlobalRoutingProtocol. I am concerned about how to avoid looping of packets. My implementation calculates k-shortest paths from ...
0
votes
1answer
33 views

PPTP with restrictive access to local network for connecting clients

How can I restrict access to my local network for VPN-clients connecting to a VPN-server (PPTPD) located on my network? I would like clients to be able to connect to my linux node running a VPN ...
2
votes
1answer
4k 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 ...
2
votes
1answer
31 views

route table issue when I appended option net.ifnames=0 to grub2

I appended two options net.ifnames=0 biosdevname=0 to grub2 because I want to change default network name to old name eth0 on RHEL 7. After that, I edited /etc/sysconfig/network to set default ...
0
votes
1answer
25 views

Routing set of users/devices through a specific WAN with a Dual WAN router

I have two internet connections and I want certain devices/users to always to go through the specific connection while the others would be able to use either WAN in a typical load balancing setup. The ...
0
votes
1answer
26 views

Most robust way of forwarding multiple URL via one IP

This is probably subjective but if anyone could suggest a robust solution for the following that would be fantastic. We have potentially multiple URL's in service which are currently 1:1 with Public ...
-1
votes
1answer
37 views

Cisco Router - How do I host multiple websites with one public IP

I'm having some difficulty configuring my Cisco 4300 Series router to host multiple websites with a single public IP. I have created my access lists, but the techs over there tell me I must have one ...
0
votes
0answers
45 views

Migrating from Static Routes to BGP:: now TRACERT/PING works but Windows CIFS or HTTP do not

When we switch from a static routed private non-BGP circuit to a BGP private circuit linking two offices, Windows shares and HTTP browsing of internal machines across offices fails with timeouts. ...
0
votes
1answer
32 views

Can't manage / ping Sonicwall's LAN interface from across MPLS

We have two of our sites connected via an MPLS that bypasses our firewall. Traffic between the sites, when hitting our core switch is routed directly to a second interface on our ISP's router. The ...
0
votes
2answers
76 views

Debian Jessie /etc/network/interfaces post-up route gateway won't persist reboot

I have a Debian Jessie box with 2 interfaces. I want eth1 to route public traffic on public static IP 1.2.3.4, and eth0 to route mgmt traffic on 192.168.0.55, so I edited /etc/network/interfaces to ...
0
votes
2answers
48 views

Iptables forwarding with single interface

Is it possible to use Iptables to forward all traffic going to certain network to given ip address? I have Ubuntu server to act as router in network 192.168.1.0/24. Its IP is 192.168.1.254. (This ...
0
votes
0answers
10 views

Routing traffic through veth interfaces

I'm trying to route traffic through veth pair on ubuntu 14.04. Traffic flows fine but the problem is that i can't use tcpdump and other tools on the virtual adapter directly because the traffic is ...
0
votes
0answers
28 views

OpenVPN - smcroute for multicast tunneling

Good day Problem: After some tiresome research, I discovered not only does OpenVPN not allow Multicast over tun, but I am also not able to switch to tun due this feature not being present in VPN ...
2
votes
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 ...