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

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6
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0answers
290 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 ...
6
votes
0answers
792 views

Forwarding traffic from TUN device (C++ backend) to the default gateway

The following problem is just a piece of the bigger solution I have a problem with. All other elements seem working so far, so I'll try to describe very small piece which I have problem with. I've ...
5
votes
0answers
20k views

Openvpn routing for lan to lan through tun

I am trying to setup an OpenVPN tun to connect two lan's The open vpn connection is up and working but there is a problem with my routing or nat or something. What I need is an example of what a ...
4
votes
0answers
164 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
770 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
113 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
160 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
134 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
138 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
481 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
15 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
37 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
63 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
45 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
49 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
61 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
106 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 ...
2
votes
0answers
101 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
58 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
345 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
159 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
162 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
581 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
51 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
30 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
26 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
16 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
21 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
70 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
35 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
71 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
13 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
665 views

How to get OpenVPN Client (Mikrotik RouterOS) <-> OpenVPN server (Debian/Linux) setup to work

I have some issues with making MT to work with OpenVPN server (Debian). I can make successfull connection to OVPN server, but traffic is not routed through OVPN server. Here is my configuration. ...
1
vote
0answers
81 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 ...
1
vote
0answers
36 views

OpenVPN: routing to two VPNs

Using Ubuntu 14.04 (up to date). I'd like to use two VPNs (openvpn) a the same time. LAN is: 10.1.1.0/24 The 1st VPN, homemade, is only routing the 192.168.1.0/24 network via the tunnel. Routes ...
1
vote
0answers
54 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
0answers
49 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 ...
1
vote
0answers
95 views

forward vpn traffic from tun1 to tun0

I've been banging my head on this for a while and gave up trying to figure it out. My knowledge about routing and iptables is just too limited to understand this it seems. I have configured a split ...
1
vote
0answers
329 views

Assign a public ip to openvpn client

For learning purposes, I'm trying to set up openvpn server, so that each connected client would get a unique public ip address. I have a vps server and I ordered extra 8 static ips and they are ...
1
vote
0answers
97 views

Multicast destination NAT on same network interface, with netem

For testing purpose, in a big network where IT will shoot me if multicast data are not streamed in the right VLAN, I am trying to degrade multicast packets with a server running netem configuration. ...
1
vote
0answers
73 views

Ubuntu 12.04 Router Firewall TTFB Delay

I use Ubuntu Server as my router/firewall for my network for a number of reasons. Until recently, I was using 10.04 with great success for this purpose. The OS provides DNS lookup and DHCP using ...
1
vote
0answers
54 views

Linux: even with route, packets not going over the interface

I apologize but this is a question I jotted down when debugging another problem, so I can't provide any additional information. Anyway: suppose we have no firewall rules, and the following route ...
1
vote
0answers
24 views

Summary Error Configuring HAProxy via pfSense

I configured a frontend record that is refering to a backend server pool with one record. The referred HAProxy Backend server pool contains a single record with the Max con value set to 2000. In the ...
1
vote
0answers
152 views

Change source address based on destination IP: NAT or routing?

I have a router/host with multiple public IP addresses. I want to change the source ip depending on some destination addresses. This has already been asked here: If the traffic originates from some ...
1
vote
0answers
63 views

OpenVPN routing based in LDAP Authentication?

To understand the solution better this is an example: The company has 1000 users that constantly switch seats (computers are set with DHCP IP, so the user can constantly have his IP address ...
1
vote
0answers
110 views

IP-rules don't seem to be working on CentOS-6.6

I faced a bit odd difficulty with policy-based routing on CentOS-6.6 server. I have a setup where I need to enroute all packets originated from 172.25.0.0/16 destinated to 172.24.0.0/16 and some ...
1
vote
0answers
51 views

Connecting 2 sections of a guest network using a pair of layer 3 switches

I have 2 subnets, these are physical sites which are connected with a point-to-point fibre link, 10.0.0.0/16 is our main site with our main gateway, 10.2.0.0/16 is the second site which sends all ...