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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Upload rate of servers

This question might sound very dumb. I'm thinking. If 1000 clients download a file at the rate of 1Mbps, does the server have to upload at 1Gbps? If there are 10,000 clients, the server has to upload ...
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Isolating devices on a LAN without using (router) VLAN

I have been pondering the best solution for the following goal: Isolate a device(s) in a lan, without the use of a router with VLANs (as consumer grade hardware usually do not support this) My ...
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2 computers on the same subnet of an ISP can't talk

I have networks connected to the same ISP. Both routers are configured with a static IP like: Router 1: Static IP address: 123.123.123.201 Subnet Mask: 255.255.255.0 Gateway: 123.123.123.1 Router 2: ...
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access web server on private network

I would like to access a web server(10.0.0.3) on private network via other machine, that has connection to the private network(10.0.0.2) and has a public ip too(23.88.XXX.XXX). I am trying with this, ...
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How to add a static route to a host via interface using 'route' tool?

I'm new to *bsd systems. Usually in linux-based I add routes like that: # eth0 ip address ip a add 10.100.1.2 dev eth0 # gw is accessible via eth0 interface ip route add 10.100.2.1 dev eth0 # ...
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Bridge member interfaces not passing traffic to each other [closed]

I know this is a relatively common issue, however I've ran into an impasse I have researched extensively for a solution, and yet I am close to completely giving up on finding a way to enable ...
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Injected packets using libPCAP library is not seen from python socket sniffer and netcat

I am using libpcap to transmit packets between two VETH pairs {veth1, veth1peer} and {veth2, veth2peer} and using each others peer to inject packets upwards to veth1 or veth2 and disabled "rp-...
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Forwarding (local) RTSP/HLS traffic via VPN to expose on WAN IP of VPS

I feel like I am overcomplicating this extremely by wanting to do it securely, so a fresh look at this would help a lot. I have a webcam that I want to publish / embed on a website. My current setup ...
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How to route traffic from LAN to inner switch on Hyper-V?

I have a Hyper-V host (192.168.88.234) on my LAN network (192.168.88.0/24). Additionally the host has an Inner Switch with the address 10.0.0.1. I have added route to the Inner network through the ...
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Lower throughput in a Bridge created as a Ethernet Switch in a Ubuntu Server -

The setup is given below. I have a server with NIC(eth0 and eth1). I have created a bridge br0. The idea is I want to send the packets received from eth0 via br0 to eth1. (Laptop)__________Ubuntu ...
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Forward all incoming traffic without redirect

How to forward all traffic to another domain? serverA has a serverA.com domain serverB has a serverB.com domain I want to forward all incoming traffic from serverA to serverB For example, when ...
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SNAT and NAT on windows server

I want to ask how can Server2 (windows) here have internet access without changing the firewall rule? based on this diagram Server1 and Server2 has connection through the switch, i was looking for on ...
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Add a static route to access a host on the client side of VPN

Remote server (Windows Server 2012 R2) connects to local router and after that the server is accessible from 192.168.22.104 as 192.168.170.254 without any manual actions from me. Now I would like to ...
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Linux pass-through routing [migrated]

I have a reasonably ordinary Linux machine with two ethernet interfaces which I'll call eth0 and eth1, and a WiFi interface which I'll call wlan0. For various reasons, I do not want this machine to ...
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Bridge and Wireguard network config

I have Intel NUC with WireGuard client. It works fine. I want to connect another machine via NUC by Ethernet and WireGuard. (Router) <----> NUC (Ubuntu + VPN client) <----> Another Linux ...
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Routing KVM VM traffic over wireguard from host OS

I'm trying to setup a Wireguard tunnel on my host OS and route all network traffic from a specific KVM VM over this Wireguard VPN. My KVM VMs are setup using bridged networking. The interface name on ...
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Routing some traffic through an Azure point-to-site vpn

A client is setting up some AWS resources for people from my company to access. They are requiring that we setup a VPN so that they can whitelist just the gateway's public IP. I've setup an Azure VPN ...
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Block IPs without receiving traffic

I'm hosting on OVH Game dedicated server, the bandwitdth of this server is 1gbp/s, I'm receinving attack from other OVH Servers and they are saturating the bandwidth with 1gbp/s. OVH doesn't filter ...
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Wireguard site-to-site routing opnsense

I have Wireguard running in docker container (wg-easy) on VPS, the other machine connected is home server running opnsense. VPS: local network is 10.0.0.0/24 local address is 10.0.0.73 Wireguard: ...
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How to setup routing for a Linux VPN server with separate ingress and egress IPs

I am setting up a Linux server as a VPN using Wireguard (previously configured via Algo, now doing it myself). My goal is to have two different public IP addresses: one for ingress (VPN clients ...
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Windows machine not routing traffic to correct NIC

I have a windows laptop with two NICs. One is a wireless interface (used for general internet usage), the other is cellular modem using a SIM which makes it a part of private network (IP 10.100.100.12)...
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Routing packets from VPN interface to other pods change source IP

I have a pod that runs WireGuard, IPv4 forwarding is enabled in that pod, thus all packets sent from WireGuard clients are routable to the other pods. WireGuard client -> WG-NIC inside WireGuard ...
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routing or redirecting a specific url traffic to different server

Our LAN is connected to the internet through a local squid proxy setup (10.1.0.139:3128). All users on LAN used to access the internet through this proxy server. Recently our head office has made a ...
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Quagga OSPFv3 does not update IPv6 routes

NOTE: I've posted this on SuperUser but reposting here because I think it may be more suitable. I'm trying to configure Quagga to use OSPFv3 to create proper IPv6 routes between two OpenWrt routers ...
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How can I have a fixed IP to the randomly selected OpenVPN server?

We currently run a single OpenVPN server with clients that run apps that talk to it via its (unfortunately often) hardcoded IP 10.8.0.1. We're switching to multiple OpenVPN servers on the same host, ...
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Routing only tcp outgoing traffic through a tun0 interface

I have an ubuntu 20 system, and I'm trying to create a tunnel between my system and a remote server since my client system can't have any incoming/outgoing TCP traffic. I created a tun0 virtual ...
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How does a vpn route all traffic through it's tunnel but allow it's own traffic to go over the internet

TL;DR I want all outgoing traffic from my system to be routed to a tun0 device, wrapped with DNS packets and then sent to the internet, but the DNS packets also gets routed back to tun0 device. ...
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USB wlan1 Hotspot stops working when eth0 cable is plugged in

I setup successfully an USB wlan1 as AP via hostapd, and isc-dhcpd (it listens only to wlan1-interface) on a Raspberry 4 (using Raspbian). Regardless if wlan0 (the onboard WIFI) is connected to a WAN ...
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2 Interfaces with different metric, and a single default gateway - losing connection

I have a weird issue. I have two interfaces: One is my WiFi, The other is a 4G USB I am trying to set up the default GW through the 4G USB (which is NATed by the 4G provider, hence, I can't SSH ...
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How can nftables be configured using a declarative specification?

How can nftables be configured using a declarative specification? I've been reading up on Firewalld, iptables commands, etc. I'm looking for a way to write the rules in JSON, YAML, TOML, etc. and just ...
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Route traffic to Kubernetes cluster using iptables

I have a kubernetes cluster (currently only 1 node) running on my root server (netcup) and try to route traffic to it. Im pretty bad in networking so hopefully someone can help me. On the cluster ...
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Openvpn Client Doesn't Route

Hello I setup a mikrotik openvpn server I am able to successfully login into router my problem is it doesn't route anything and this problem only appears on ovpn l2tp and pptp works fine.when I search ...
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How can I connect two routers to the same switch

First of all, I'm not talking about those all-in-one routers that do wifi/switching/routing. It drives me nuts when people call a Wifi box a "router". Anway, I would like to do the ...
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Routing packets between two nics on the same system

I have a small network setup with a ubuntu router that has two nics. enp2s0 is used to set up a network with vlans, enp3s0 connects to a different local network. enp3s0 ip 192.168.53.203/26 enp2s0 ip ...
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How to map a subdomain to a specific port on the server? [duplicate]

I have a server that has a docker container running on port 443 (registry), which I access by addressing https://registry.mywebsite.com. I want to also direct https://pages.mywebsite.com to that ...
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Best practice for preferring the network interface that actually has internet?

I have an embedded device where I have three network connections, eth0, wwan0, and wlan0. wwan0 is a metered connection, so I would generally prefer eth0 or wlan0. The problem is that at any given ...
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What are the downsides of using IPv6 Multicast for majority of all communication including one-to-one?

Given IPv6 Multicast allows for a sub-pub communication model, it seems like a no-brainer for the vast majority of communication, but its very rarely used beyond video streaming, and I'd like to know ...
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Two Subnet Routing

Consider the following scenario Network 1 Switch (Call it Switch1) with the following connected appliances Old Windows 2008 Server (Old Domain Controller) with interface IP 192.168.2.113 255.255.255.0 ...
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Openvpn unable to ping on-premises servers (port unrechable)

I have configured as an OpenVPN server (Debian) and other servers in Azure network 172.20.0.0/24 which is connected to on-premises network (10.1.0.0/24) via site-to-site VPN IPsec tunnel. Connection ...
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proper way of NATing and Routing when using TUN interface with iptables

edit: I'm a newbie in networking and discovering new things :) I created a TUN interface programmatically and able to interact with. I set it up and running by ifconfig myTun 10.10.1.1/24 up and its ...
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VyOS on AWS EC2, new IPSEC tunnel won't pass traffic- what am I missing

This is an existing environment that I just stepped into. Running VyOS as a AWS EC2 instance, which handles all of the site-to-site routing for our company. Everything is already up and working. We ...
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load balancing with Bird

I have the following routes pushed into my edge router 192.0.10.0/32 via 192.168.166.110 on br166 [master01 22:53:55] * (100) [AS64514?] via 192.168.166.116 on br166 [worker_03 ...
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PC/Switch (in one subnet) connect to Switch (in another subnet), but not to PC connected to the switch

[UPDATE] The problem/behavior described below was caused by the public network connection on the system -which had a default gateway. The unusual behavior was a result of the private network sending ...
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KVM/QEMU Virtualization on server with multiple nics to WAN - full split?

long time reader, first time poster...it's been over a decade, crazy. Today, I've set up a left over server from my old job in a local data center for a friend of mine and myself. As by my contract, ...
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List all active devices in different subnets?

My company has a class A network that contains various subnets. I need to automate a way to produce a list of all online devices (in all the subnets). To start, just a list of responsive private IPs ...
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Multiple interfaces and networks with Netplan: can't ping local network

My netplan config, with multiple interfaces and networks, works perfectly apart from ping to (or from?) local network. Here's my setup: network: version: 2 ethernets: ens160: dhcp4: no ...
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How to forward traffic from one LAN router through another router then to the original gateway?

I have two routers connected to my ISP within one town in the subnet 192.168.0.0/24.Router A can reach router B successfully. I have higher bandwidth on router A than B. I would like to make A the ...
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Syntax Iptables and routing UDP protocol

I have a debian routeur server with two interfaces, one on the net, and one on the DMZ. I want to route the UDP protocol to internet to DMZ. What about this rules? iptables -t mangle -A INPUT -i [...
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Linux randomly routes packets to the wrong interface

I own a dedicated server with some kvm vps running for my clients. My main network is 192.168.1.0/24. The vps have a dedicated network 192.168.2.0/24 on a bridge interface brv6. The ipv6 traffic goes ...
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How to SSH into a computer connected to a modem while connected to a router that's bridged to that modem?

I have a Modem/Router (NAT) that authenticates to my ISP's fiber optic cable. This modem has one ethernet cable connected to my Computer and another to the WAN port of a Wi-Fi router. The Router is ...
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