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

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5
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0answers
18 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
12 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 ...
0
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0answers
11 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
11 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
26 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

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
11 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 ...
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votes
0answers
20 views

how to redirect domains to localhost iptables [on hold]

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 ...
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 ...
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 ...
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 ...
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, ...
-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 ...
-1
votes
1answer
46 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
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
24 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 ...
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
1answer
50 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 ...
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
31 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
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
24 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
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 ...
-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
1answer
25 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 ...
0
votes
1answer
30 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
0answers
9 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
2answers
74 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
0answers
26 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 ...
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
2answers
41 views

Live Migration - Switch Infrastructure

We will be deploying into an environment intended for maximum resilience/redundancy and the capability for rapid scalability. Context This environment is: 1 x NAS server with FreeNAS RAID 2 x ...
0
votes
0answers
24 views

openvpn pass ip to client like hidemyass does

I have a debian server with 64 external ips (ip blocks) and no internal IP. They go like eth0:1 eth0:2 (virtual interfaces) I have successfully setup an openvpn server on it so that I can connect from ...
1
vote
0answers
18 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 ...
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 ...
0
votes
0answers
45 views

Routing host traffic through Linux KVM (pfSense) router

I have a pfSense virtual machine running on a CentOS 7 host. The host has 2 network adapters, enp1s0 and enp3s0. enp3s0 is connected to a bridge br1. My pfSense virtual machine is also connected to ...
0
votes
1answer
31 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 ...
-1
votes
0answers
2 views

Troubleshooting port forwarding [migrated]

I'm trying to run a web server from my home network, but I have some difficulty reaching my server from the WAN. If you have an idea where the problem could lie, or need more information, please let ...
0
votes
0answers
14 views

How to implement user-based routing for a mobile app

Here I have an interesting case I recently knew about. Let's say a small software shop creates mobile and web apps that make requests to a web service. The software is sold to single users and also to ...
0
votes
1answer
29 views

Static routing between LAN, IPSec and VPN

I got the following network setup: LAN: 10.10.2.0/24 -> IPSec -> 10.10.1.0/24 (VPN Server addr: 10.10.1.5/24) VPN: 10.10.3.0/24 IPSec connection is transparent Users between 10.10.1.0/24 and ...
0
votes
2answers
47 views

Create smaller subnets from large subnet

My network is 10.10.0.0/16. I would like to break this up into /24s. My environment: I use /etc/hosts with dnsmasq for DNS and isc-dhcp-server for DHCP on an Ubuntu 14.04 server (gateway, router) ...
1
vote
0answers
56 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 ...
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
1answer
13 views

Reliable UK/EU ICMP Targets for Periodic Routing/Connectivity Tests?

I need to test routing between my United States datacenters and United Kingdom and Mainland Europe ISPs. This is used to distinguish between general transcontinental routing issues and specific ...
0
votes
0answers
21 views

ASA 5510 Inter-Vlan routing issues

and thank you in advance for your help. I am having an issue where we are migrating from an ASA 5505 to an ASA 5510 and the software versions are quite different as well so they handle VLANs ...
1
vote
1answer
24 views

Linux: NAT from lan to a bridge results in erroneous nat between bridge components. How to fix?

Consider a machine with 3 NIC's. Two bridges are active; from eth1 to a vlan on eth0 and from eth3 to another vlan on eth0. Interfaces: auto lo iface lo inet loopback auto eth0 allow-hotplug eth0 ...
1
vote
1answer
34 views

Replace client switches with Netgear to match core or instead mix/match Cisco?

We are looking for how we can have a more reliable, simpler network. How can we keep out administrative burden low, and work smarter not harder when it comes to our infrastructure? Background: We ...
0
votes
1answer
45 views

The route addition failed: The parameter is incorrect

How can I null route a IP range? I get a parameter is incorrect error. route -p ADD 65.55.223.0-65.55.223.255 MASK 255.255.255.255 0.0.0.0 The route addition failed: The parameter is incorrect.
1
vote
0answers
31 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 ...
0
votes
0answers
42 views

How to set up routes and rules at Debian gateway to bypass VPN for certain hosts?

I built my own router running Debian 7, having two NICs: Internal ethernet, eth0: 192.168.42.0/24 External link to VDSL modem, eth1: 10.42.42.42/8 (address arbitrary, just used for PPPoE). I have ...