Questions tagged [routing]

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

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How to achieve this setup? Client -> VPN -> Whonix-Gateway -> Internet

i have a server running different services, one of them is a openvpn host. Since i dont want to boot up the whonix gateway and workstation localy i thought about connecting via my own vpn to my own &...
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KVM virtualized firewall NIC configuration + iptables

I'm currently considering setting up a virtualized firewall on top of KVM. This virtualized firewall can be Pfsense, Opnsense, Ipfire, whatever basically, haven't decided yet. What I currently was ...
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How can I configure outer and inner PFSense boxes to allow specific traffic to pass, and so devices can ping each other?

I have the following infrastructure currently set up, with colors for what I would like to achieve: The outer pfsense (EDGE) is currently providing a DMZ to the public and OpenVPN to our road ...
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29 views

PortForwarding eth0 to ppp0

I have a RaspberryPi which connects to the internet on eth0 which has static IP, I have installed Squid and I have also enabled 1694 port on my Mikrotik router to be forwarded to 3128 port on my ...
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What is wrong with my routing config?

I have a Raspberry Pi connected to two interfaces. wlan0 is my home network, which is assigned a static IP address from the router. wwan0 is my USB modem. I want both interfaces to have a static local ...
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Forward packet from loopback interface based on routing table

I have a problem in which I need to process some packets and send out to more than one interface/network. My solution is to send the packet to a loopback/dummy interface and based on the Linux routing ...
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43 views
+100

Can remote users on the VPN be accessible from the same IP address as when they are physically on the network?

When a client is physically on the network their IP address is 10.1.0.10. When they remote into the VPN server they are on the 10.250.0.0 VPN network, so their IP address may be something like 10.250....
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Bypass openvpn for incoming connections

I have a PC at home which I can access over SSH (my router forwards that port). It works fine except when my PC is connected to the VPN, in which case all traffic (including response to incoming ...
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OpenVPN: Send another gw (from a client-tun on the server) to a client (ccd)

I need some help for reaching my goal to route the traffice from: vpnclient (10.8.0.3) to Server (10.8.0.1) and then over an established clienttun on the server (gw 10.0.199.1) I want only use my ...
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66 views

Can't connect Mikrotik OpenVPN Client to Linux server

Greethigs! I would really appreciate any help! For the last two days i cannot make Mikrotik router connect to Debian 10 OpenVPN server. For each connection attempt router shows the following error ...
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Redirect and sniff IOT device traffic

I have an IOT device that periodically connects to my network over wifi and uploads data to its manufacturer's website over http. I would like it to continue to do so but additionally I would like to ...
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Is it possible to assign an IP to a tagged dual-mode port (Brocade)

I have a router (ubiquity USG) and a Brocade FCX648 Layer 3 switch. (I have a second one in a stack, but that's unrelated). The end goal is to be able to connect the switch to my router, provide IPs ...
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Connection reset by peer unless immediately after target machine reboots

I have a strange networking problem. I have a VPN setup on udp:1195 on an office (changed the port from 1194). The VPN server is 10.9.0.1, my client receives 10.9.0.2 when connected. I can ping LAN ...
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How to find out where the TCP traffic is getting dropped?

I am facing a strange issue today. An HTTP API that is deployed as a Google Cloud Function (which was working well till a few hours ago), is not responding (time out) now when I use my usual WiFi ...
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66 views

IPv4 Forwarding (NAT) only works after toggling IPv4 forwarding to off then on

This literally makes no sense and I'm stumped about why this is happening, but hear me out. Currently I'm using Proxmox 6 (Debian) and I created a NAT so VMs/LXC containers can communicate between ...
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23 views

Configure linux to route traffic from internal network through ipsec tunnel (policy based)

My company hosts cloud services. We have a partner that also hosts cloud services. We want to connect our network with theirs using ipsec / strongswan. Our clients should be able to reach the target ...
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Nftables, ssh server behind firewall. Pre/Post Routing

I want to make post- and prerouting rules to allow the following: I have an ssh server running on the internal network at port 22 that I want to make available externally on say port 2200. How would I ...
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How to troubleshoot a routing issue

I am running into a weird problem suddenly. I have Windows 10 on my computer and I have a Hyper-V virtual machine on my computer that runs Windows Server 2019. Inside this, I am hosting a web site. ...
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45 views

OpenVPN, no internet after connection

I have an OpenVPN server on Ubuntu and several OpenVPN clients on Windows 10, both are behind a router (port forwarding has been done). Each client can connect fine and can ping/connect to each other, ...
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23 views

Client traffic is not routed throught VPN

I try to create a simple Strongswan connection between a server and an Android phone, using Strongswan Android application. My Android phone informations : Android 8.0.0 with Samsung Experience 9.0 It'...
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196 views

Static route - gateway not used

I'm trying to use gateway address 10.10.121.10 in order to forward TCP traffic via this machine. I would like to make that traffic from my machine is going over 10.10.121.10 and that machine 10.200.32....
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115 views

RTNETLINK answers: Invalid argument when adding route

I wish to add static route for my interface eth1. But Whenever I use route command , I get this annoying error RTNETLINK answers: Invalid argument. Current routing configuration Destination ...
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Route thru 2 Access Points (APs)

I have a network as follows: ----------- AP 192.168.2.1 ----------- | ----------- 192.168.2.2 Box1/AP1 192.168.1.1 ----------- | ----------- 192.168.2.3 Box2 ----------- So Box1 is connected to ...
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35 views

Simple routing not working

I have a problem with my virtual environment. On this picture you can see my configuration: I have a total of three subnets. Where one router with 192.168.1.1 is physical and one virtual router and ...
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Can I route traffic to a connected VPN based on a given hostname?

The company I work for (small startup) has setup a VPN to add an extra layer of security to the services we connect to (say, for instance a Wiki). We, the employees, work from home and connect to the ...
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DD-WRT not routing clients over OpenVPN

I have a Linux router and OpenVPN client at home (running dd-wrt) which is connected to my office network via OpenVPN. From the router itself, I can access my office LAN and its hosts. However, from ...
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37 views

Connection reset by peer on HTTP, IP twice in traceroute

So I rented a Vserver and when trying to obtain a Letsencrypt Certificate I got the message "Connection reset by peer". Connecting via curl http://196.189.91.208 also does not work in 4 of 5 ...
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312 views

Wireguard VPN can't access internet and LAN

I have a server running Ubuntu 20.04 and wireguard 1.0.20200513-1~20.04.2. I installed the wireguard app on my phone (Android Samsung S20+) and disabled WIFI and connected to 4G. When the VPN is ...
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51 views

Is it possible to have a IP belong to multiple ASes?

I'm wondering if it is possible to have same IP address belonging to multiple ASes? especially in case Anycast IP, so we could provide the node in different ISP's networks? A router, so that we can ...
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1answer
109 views

Postfix - outbound SMTP traffic going out wrong interface

I have a postfix server that was working fine (inbound and outbound) until I made some networking changes. I added an interface (for a second public IP address, via a VPN tunnel. I intend to run ...
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21 views

Strange ipv6 routing issue

I have a Juniper EX4550 as a gateway to our customers with ipv6 enabled. I can ping, for example, google.com from the 4550 with no problem, so the routing is correct. However, when I ping from a ...
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94 views

Kubernetes: route outgoing UDP traffic through service

My question is about Kubernetes' internal traffic routing and probably about routing / NAT in general. Goal: I'm running a Wireguard service on Kubernetes and I'd like to route all outgoing traffic ...
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How to access a host on 192.0.2.0/24 from Linux?

I've got my hands on the FSM-510G switch that has a default IP set to 192.0.2.1. It's obviously not in the LAN CIDR block, so what should I do on a Linux host to be able to access it directly? The ...
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Route all requests through OpenVPN only for specific user in FreeBSD

I have a software that I want to run through the VPN, but the remaining software on the machine shouldn't run through the VPN (the VPN is slower than my home connection). I'm playing with ipfw, route ...
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Google Cloud Platform send requests from a backend vm to its own Internal Load Balancer

In this Google Cloud Platform page https://cloud.google.com/load-balancing/docs/internal/setting-up-internal#test-from-backend-vms (2020-10-12), underneath section "Sending requests from load ...
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59 views

Dual Gateway Setup in Mikrotik

I`m really new to Mikrotik Environment, I need a help from you guys for following scenario I have one adsl router(Main internet connection) with IP range of 192.168.1.0/24 connected to Ethernet 1 of ...
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123 views

How to forward/route packets via wireguard overlay network?

My question is related to basics in network routing and iptables, and is probably due to my lack of understanding on how I should set this up. I have established an overlay network between hosts using ...
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21 views

Why there's only one-way ping between two routers?

I have a ZTE F609 connected to ISP with local address 192.168.1.1/23. I also have a Tenda 11N connected to the ZTE. The Tenda WAN address is 192.168.1.97/23 and local address 192.168.2.1/24 My problem ...
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How can i route traffic between different networks

Am new to networking and have someone gotten things to work by using online resources. I am supposed to route traffic from one network to another such that a Pc in one network can ping and communicate ...
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99 views

Unable to Ping IP Addresses on VIF interfaces on VyOS

I'm having issues with 2 VyOS routers, not being able to ping IP address on VIF interfaces. Below is the configuration on the router, which is also running BGP (which I've confirmed is working as ...
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591 views

connect two routers with different subnet

I've seen a lot of questions about this, but haven't really understood/didn't match my issue. I'm a newbie regarding networking. I got two routers, both are connecting to the wan (giving them ...
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38 views

Confused about routing and netmasks

I'm having some issues with OpenVPN and multiple VPNs. Not earth shattering, but after bringing up a combination of VPNs I didn't intend to I've ended up in a situation I don't understand. Looking at ...
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21 views

Is it possible to connect hardware VoIP phone to the PBX behind IPSec VPN?

I have a hardware VoIP phone, a PC with VPN Client, a PBX (FreePBX) over that VPN connection. I have a softphone that works pretty well through that IPSec connection. Can I use named PC as some kind ...
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58 views

How to disable / remove multicast completely?

On one of my Windows Servers (Windows Server Standard 2019), I'd like to remove multicast handling completely. Completely really means completely - completely ignore incoming multicast traffic, and ...
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26 views

Route specific application using OpenVPN GUI config file - Windows

I want to use NordVPN via the OpenVPN GUI. But specifically what I want to do with that is only route one specific app through it (maybe by specifying it's path or something). I can't find anything ...
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122 views

How to do VPN split tunneling for specific port(s)?

I was going by this tutorial, looking at the sections for split tunneling with OpenVPN or Windows Powershell (IKEv2). I'm relatively new to this sort of stuff, so I would really appreciate some help. ...
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33 views

How to connect multiple clients to an OpenVPN server using static key auth so they see each other?

I have an openvpn server with three clients connected to it using static key authorization. I need to connect them in a way that the clients can "see" each other. So, for example, I can ping ...
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45 views

Should I assign my VPN a static IP or use a DHCP reservation?

I'm setting up a Raspberry Pi with OpenVPN on my home network. The router for my network is a NetGear Orbi. In the router's configuration I'm able to assign a static internal IP address (say 10.0.1....
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56 views

Weird bandwidth issue with double NAT and Windows clients

I have the following issue and literally tried everything already and cant figure out, what's the root cause of this, how it is explained, and then also how to maybe fix it. Setup: Cable Router 192....
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22 views

Open port on technicolor router

I need to open 87 port on server router (Windows server), but unfortunately I didn't found informative documentation of how to do it. Maybe somebody here had similar case and can guide me how to open ...

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