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

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8
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462 views

Getting Squid and TPROXY with IPv6 working on CentOS 7

I'm having trouble getting TPROXY working with Squid and IPv6 on a CentOS 7 server. I was previously using a generic intercept setup with NAT, but it was limited to IPv4 only. I'm now expanding the ...
4
votes
0answers
216 views

some IPs within a subnet not reachable

I'm running 3 Debian-Servers, each with its own IPMI. All IPs are within the same subnet with the same gateway. The problem is, that each server can ping its own IPMI but not the IPMI of the other 2 ...
4
votes
0answers
1k views

IPv6 routing over OpenVPN

Trying to learn how IPv6 works with OpenVPN, so I wanted to setup following scheme. I have a VPS server (Ubuntu), which have been allocated a /48 subnet. ISP ipv6 gateway is XXXX:XXXX:XXXX::1 Server ...
4
votes
0answers
794 views

bridged network problems running VirtualBox appliance inside VMware server

One of our hardware vendors supplied us with a virtual appliance that they said needed to run inside VirtualBox. That's non-negotiable - as it's designed to run as an appliance, they need some way of ...
4
votes
0answers
2k views

vmware DNS in host-only configuration

I want to connect a Linux VM running in VMWare on a Windows 7 laptop to an enterprise network using host-only configuration. I was able to setup bidirectional routing between "host-only" VMWare ...
3
votes
0answers
75 views

Ubuntu 12.04 - Issue with routing between ethernet and bond/bridge

I have a device which has 3 Ethernet devices and one WiFi-device on board. I'm using eth0 for an internal network (192.168.1.0/24) and eth1, eth2 and wlan0 to connect to an external network ...
3
votes
0answers
174 views

pfSense Internal Traffic Policy Based Routing

What is the current and correct way to apply policy based routing to pfSense internal traffic (originating from the firewall itself)? Creating a floating rule with the WAN interfaces selected, ...
3
votes
0answers
169 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 ...
3
votes
0answers
191 views

How to split traffic through two different network adapters based on TCP port in OS X

I have a scenario where we will be using a Mac to stream video content to an RTMP server. This RMTP service provides 2 ingest URLs so that you can upload the same video content twice and have ...
3
votes
0answers
179 views

Solving an asymetric HA Firewall/router

I have an old Linux HA firewall/router setup that never quite worked. As it was never quite put into true production (just testing and demo's), I always had to have one firewall shutdown to make it ...
3
votes
0answers
115 views

“ip route get” on Ubuntu returning default instead of static route

We've been trying to solve this seemingly simple routing problem for days. We are trying to route traffic through an OpenVPN tunnel. Specifically, traffic to 10.0.1.136 should be routed through our ...
3
votes
0answers
508 views

Openstack seems to not map internal IPs to local network properly

I have a very confusing issue which I can't seem to resolve. I followed a guide by Loic Dachary on installing Openstack Folsom on Wheezy, and deployed it on two hosts: a cluster node, and my ...
2
votes
0answers
42 views

Routed bridge networking for KVM guests along with eth1 alias interfaces for shared hosting with dedicated IPs for each virtualhost

First question here on serverfault, so kind of a newbie, all feedback is welcome. I have a dedicated server running Debian GNU/Linux 8.4 (jessie) with one public IP and multiple additional public IPs ...
2
votes
0answers
21 views

Cisco Switch Routing performance monitoring

It is quite a question for me: I have Cisco Catalyst 2960S switch which is nice hardware even despite its age and EOL. I'd like to set it as small router between several networks within a remote ...
2
votes
0answers
46 views

Route single IPv6 address using router advertisement

I have a server in my local network that connects to an external VPN server and gets assigned the public IP address 2a02:c200:1:10:3:0:4315:2. Currently, when other computers in my local network ...
2
votes
0answers
68 views

Website inaccessible until host is pinged from client (on a class A subnet)

There is this really weird issue on the internal network, this happens constantly to "random" machines. Machine (client) boots up, goes to ...
2
votes
0answers
78 views

Multi vlan internet access via Watchguard

i'm pretty new to network and routing so i would appreciate some tips on this. I have a firewall(watchguard x1250e), connecting to a switch(Nortel Baystack 5510) with multiple vlans for internet ...
2
votes
0answers
56 views

How to Route google apps gmail based on subject line?

I set up a bunch of routes in my new google apps system (migrating from doing inbound email with mailgun forwarding). In one case we need to forward all email with a particular subject to another ...
2
votes
0answers
66 views

IGMP Snooping limitations and when do you start to use PIM?

At a head end I've just inherited, all our multicast streams run on cisco switches with IGMP snooping enabled. Because all these streams are to be kept local and isolated we've never really looked ...
2
votes
0answers
110 views

Non-local IP for next hop in routing

I'm working with an MPLS network and I am slightly confused about some route entries. Interfaces are (these are fake IPs): eth0 10.10.10.1/24 (LAN) eth1 10.9.9.1/24 (MPLS) eht2 2.2.2.2/24 ...
2
votes
0answers
59 views

How can I test an ICMP Re-direct message?

I want to test whether my linux machine is actually accepting ICMP re-direct message and updating the entry in routing table.This is what i have done so far to achieve the same. Simulated a ICMP ...
2
votes
0answers
372 views

How do I get IPv6 packets to my KVM virtual machine?

My setup is: Debian Wheezy x64 on the host and on the guest. I am using a tun/tap setup to connect a virtual machine to the host. The KVM network options I use are: -net ...
2
votes
0answers
83 views

Route public subnet to client location

Due to the fact that my ISP introduced CGN/DSLite and I still need public IPv4 addresses, I was thinking about tunneling an unused /29 that I own from my server to my local Linux box. After doing ...
2
votes
0answers
169 views

Openswan bad routing record after connect

I have a problem in openswan configuration. In the routing table create following lines on the client, after connect to server: Dest mask Gateway Conn Metric 0.0.0.0 ...
2
votes
0answers
171 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 ...
2
votes
0answers
734 views

Route specific network traffic through vpn in virtualbox guest

I am running OSX with a windows server 2008 guest in Virtualbox. My goal is to route some of the network traffic in the host through the server guest. This is because the win2008 server has a VPN ...
2
votes
0answers
583 views

Connectivity issues with dual NIC machine in EC2

I'm trying to get some servers set up in EC2 in a Virtual Private Cloud. To do this, I have two subnets: 10.0.42.0/24 - Public subnet 10.0.83.0/24 - Private subnet To bridge these two, I have a ...
2
votes
0answers
2k views

Routing only some local IPs through VPN on dd-wrt

Much similar to this entry: http://serverfault.com/questions/94283/using-dd-wrt-to-connect-to-vpn-and-forward-all-traffic-of-certain-devices-through , I have set up my router with dd-wrt + OpenVPN to ...
1
vote
0answers
18 views

Route all traffic from virtual interface to temporary tun0

I'm trying setting up at home an automated torrent client to download some big GIS databases I produce at work and release as .torrent files. My home server is a Raspberry PI with one Ethernet ...
1
vote
0answers
11 views

Is there a way to tell a machine accesible via a gre tunnel to join multicast groups via pimd or smcroute?

this has been stumping me for some time and would love any help on this. So I am subscribed to a data vendor through an intermediary firm. The intermediary firm has physical connections to the data ...
1
vote
0answers
14 views

How should I use Cisco ASA 5510 and Catalyst 3550 together

So I took on a project at my job moving four separate networks into one Colo center. Currently I broken everything down from the four networks into 4 VLANS on the ASA 5510. Each are assigned IPs ...
1
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0answers
34 views

IPv6 Routing // Destination unreachable: Beyond scope of source address

I want to setup Dual Stack on Customer VMs. The Router is a VM too. Running on Debian Wheezy. Overall virtualized by ESXi. IPv4 is working fine. Ping from Customer VM ping6 -c 1 heise.de PING ...
1
vote
0answers
49 views

forcing proxy traffic to route via a specific 3G dongle interface

I've searched for details on how to do this but I've been unsuccessful - I wondered if someone could offer up some advice. I have 2 network cards (LAN and 3G in my case), LAN is my main interface ...
1
vote
0answers
15 views

Routing a flannel overlay network through AWS VP peering

I have 2 VPC on AWS VPC-A 172.31.0.016 and VPC-B 172.17.0.0/24 I've created a VPC peering and I can reach all the services running on VPC-B from VPC-A and vice versa. Now I created a flannel virtual ...
1
vote
0answers
68 views

Cluster red hat add a default route , no RIP protocol is enabled

We have a couple of Red Hat Enterprise linux server with clustering uname -a: Linux deda-ora1 2.6.18-194.el5 #1 SMP Mon Mar 29 22:10:29 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux rpm -qf ...
1
vote
0answers
42 views

Route traffic between OpenVPN networks

The goal is to have main OpenVPN server and multiple OpenVPN subnets that are reachable for main server clients. All subnets' servers are clients of the main server too. Here are configs: main ...
1
vote
0answers
47 views

Proper NAT/routing configuration for device-wide iON VPN (using NETunnelProviderManager)

I am trying to set up a VPN server environment to work with the test program provided by Apple called SimpleTunneler, which uses NETUnnelProviderManager introduced in iOS 9.0. For the server portion I ...
1
vote
0answers
33 views

How to ping machines behind an openvpn client router

I've a network located in 3 phisical places. In the first place I've a PC called PC1 configured as OpenVpn Client with a 10.8.0.3 ip address. In the second place I've a Router configured as OpenVpn ...
1
vote
0answers
30 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
0answers
29 views

Exim Route based on Email Header

I am currently crafting an Exim Router to manually route all emails to a user's Spam Box that have a certain header in it. The following condition works : condition = ${if ...
1
vote
0answers
70 views

VRF-like multiple routing tables on Windows

Does modern Windows kernel support some kind of VRF-like (or Linux network namespaces) multiple routing tables? I am considering a Windows server with 5 NICs. Every NIC attached to its own VRF ...
1
vote
0answers
34 views

OpenVPN Tunnel not working for subnets after some time

okay this sounds weird, I have one OpenVPN Server with 2 clients, 1 client works fine, the second one drops out after about 1 day. The server is 10.7.2.1, the client 1 10.7.2.2 (not working) and ...
1
vote
0answers
66 views

RRAS IKEv2 Behind Router

I have an installation of Server 2012 R2 running that I need to deploy an IKEv2 VPN on. It's my way of accessing files at my office. The current setup involves a NAT Router (Just a standard ...
1
vote
0answers
21 views

Losing connection to devices over the weekend

We have a networking scheme such as: 10.1.0.0/16 10.2.0.0/16 10.3.0.0/16 Each network is associated with a switch. Each switch connects to a layer 3 core switch that also acts as our router. We ...
1
vote
0answers
23 views

openvp client “spoofing” server with IPv6

An openvpn client (windows 64 bit -presumable windows 8-) is connecting my OpenVPN server normally. After connecting, it is routing all it's vpn related traffic through the vpn, natting (seems to be ...
1
vote
0answers
94 views

Routing with Two Subnets - Azure VPN to RRAS (inside WRT1900AC Network)

In my network I have a Linksys WRT1900AC Router and a Microsoft RRAS VPN Server. The local LAN address is 10.10.1.0/24. In Azure, I have a Network that has a VPN connection to my RRAS VPN Server ...
1
vote
0answers
50 views

ARP issuse in SUSE Linux

I am dealing with a very strange problem. I have a VM running SLES 11 SP4 in VMware Environment. The machine has two NIC. All of a sudden the second NIC stopped working. It's not even pinging the ...
1
vote
0answers
126 views

Routing public IP addresses to customers in a WISP setup

We have a fibre leaseline with a /29 range for our pfSense WAN port 61.179.145.40/29 So the WAN of our pfSense box is 61.179.145.42 with a gateway of 61.179.145.41. Our ISP has also routed ...
1
vote
0answers
15 views

OpenVPN fail-over, keeping same IPs and certificates?

So I have a OpenVPN server (10.0.0.1), and several OpenVPN clients connecting to it. The server authenticates via certificates and keys generated by easy-rsa, and hands out a unique IP (10.0.x.1) and ...
1
vote
0answers
107 views

IPv6 Ubuntu - Not routing IPv6 to LAN

I'm trying to routing my ISP IPv6 to my LAN. Everything seems ok but clients (on Win7, Ubuntu) not reaching any IPv6 network. Something is missing but idk what. Thanks. ISP Router <-> eth1 ...