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

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28 views

Port forwarding with different gateway

Here is my current setup: Public IP -> Iptables firewall_A with DNAT from Public IP to -> mail server Iptables rule: iptables -t nat -A PREROUTING -d PUB.LIC.IP.ADD -p tcp --dport 25 -j DNAT -...
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14 views

Problems with Mobile IP VPN and aitwach / app

i have this setup: Some Android devices configured with IP Range: 192.178.10.X - connected over 3G with Mobile IP VPN (mobile IPSEC Tunel / VPN). Endpoint is a static ip. My router configuration (...
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1answer
136 views

Changing openvpn dhcp pool

I have a config at the moment which is working almost fine until some clients connect, the server starts to kick the clients off from the server or something like that. As I have checked every clients ...
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2answers
109 views

Route traffic from ASA to different firewall default gateway

I should probably start by explaining the topography, we have two different internet connection with separate firewalls.One is an asa and one is a meraki, the default gateway for all the servers ...
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1answer
78 views

Proxmox VE (routing and port-fowarding issue)

I have installed PVE, I received three public Ip address two of them are in the same range, the third one is in different range. I wanted to give PVE host one pub IP to be reachable externally, and ...
0
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1answer
59 views

Better routing path to reduce network latency to China

When I am at home (comcast internet infrastructure), the packets go to either the att backbone router or the greatoaks.ca router and then cross the ocean to China CNC backbone router (219.158/16). ...
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1answer
55 views

New iptables rules not showing up

I'm trying to use iptables to forward incoming traffic on port 80 to a web server running on another IP address and port. Not that it appears to make a difference, the web server is running in a ...
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0answers
87 views

systemd-networkd multiple ip and gateway using single interface

How to achieve multiple ip and gateway with systemd-networkd? When using ifconfig, route, andip`, it's something like this: ifconfig eth0 222.124.201.x up netmask 255.255.255.248 up ifconfig eth0:0 ...
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2answers
59 views

Connecting two ESXi servers via LAN

i have an issue with configuring two ESXi servers to communicate with each other. My configuration looks like this: 2 ESXi servers with 4-4 Ethernet ports. ETH01 on each server is used for internet (...
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1answer
99 views

Multiple internet connections with internal subnet

We have 4 x business broadband connections and 1 static IP address. We have several servers which need to access one another and the internet and some need to be accessible remotely from the internet. ...
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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 ...
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2answers
61 views

PFSENSE: routing packets based on source IP address

I am trying to route packets (actually, trying to change DEFAULT GATEWAY) depending on source IP address with PFSENSE. ONE-SPECIFIC-IP ---> SPECIAL GATEWAY ANY-IP ---> DEFAULT GATEWAY ...
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0answers
56 views

Cisco 2851, nodes on local network can access Internet but router can't [closed]

I am using a 2851, on GE0/1 I have a BT OpenReach VDSL modem and GE0/0 goes to a switch and the rest of my network. The desired configuration is pretty straight forward and mostly works, I want the ...
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0answers
61 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 ...
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1answer
72 views

Choosing gateway based on Source IP in Windows

So here is the scenario I have one NIC configured with two ips and two gateways for two diff networks. Consider the gateway/subnet are 192.168.0.1/24 and 192.168.1.1/24. If connection is initiated ...
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268 views

IPv6: Destination unreachable: Address unreachable

My server can't ping/reach any other outside. ping6 works for my local fe80::468... address as well as the 2a01:4f8..., but not for fe80::1! Errors/Troubles/Issues: ip neigh show fe80::1 dev eth0 ...
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0answers
55 views

Nginx folder redirection without changing the url

I want to redirect an old path to a new one without changing the url and keeping the suffix of the url for the redirection: dev-osm.blah.com/NYC/v2/site/links?key=a12345 redirect to dev-osm....
3
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1answer
48 views

Forward traffic to VPN network

I have a cloud server running on Ubuntu 14.04 which is connected with an IPsec tunnel. The server has a real interface with a public IP x.x.x.x and a virtual interface 172.16.100.1 All the traffic to ...
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20 views

I want a connection to a (PLC) webserver reachable @ 10.0.0.10 via 2nd NIC (10.0.0.1), but on 1st NIC another 10.0.0.10 host is also reachable

I have a PC with 1st NIC for company intranet and internet (gateway defined, etc.) and a second NIC 10.0.0.1 where I want to reach my PLC webserver directly connected at NIC 2 and having IP 10.0.0.10 ...
0
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1answer
59 views

LAN access but no internet connection unless different subnet [closed]

Dear SF@StackExchange, I'm using an access point that provides LAN as well as WLAN capabilities using 4G to connect its hosts to the internet. DHCP is deactivated by design. Regardless of the OS ...
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0answers
37 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 ...
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1answer
96 views

Linux GRE keep alive

What are possibilities in Linux kernel (?) to work with Cisco endpoint encorporating GRE keep-alives? We have GRE IPsec tunnel set up with another company. We would like to have backup tunnel which ...
5
votes
1answer
69 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 ...
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0answers
44 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 "...
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29 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 ...
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140 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 ...
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32 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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1answer
28 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
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1answer
65 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 ...
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44 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 ...
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1answer
29 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, www)...
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1answer
64 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: eth0:...
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39 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
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1answer
46 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
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1answer
48 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 ...
2
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1answer
88 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
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1answer
75 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
42 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
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1answer
35 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
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3answers
54 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 ...
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votes
1answer
97 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
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1answer
50 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
136 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
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0answers
63 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 ...
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2answers
593 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 ...
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116 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 ...
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3answers
114 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 (A->B)...
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2answers
55 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 ...
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0answers
33 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 ...
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36 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 = ${if match{$h_X-Spam-Status:}{\...