Questions tagged [routing]

Question 1

I have a network router with this linux firmware: Linux SNR-CPE-ME2-SFP-Lite 3.4.113.185 #1 SMP Wed Mar 19 13:55:06 +05 2025 mips GNU/Linux I'm trying to set up a traffic redirection for a single ...

Question 2

Network [VPS-Linux-Bird 2.17.1-1 ] <-two liks gre-> [Mikrotik 7.20] <-l2tp-> [Mikrotik 7.19] <-l2tp-> [ same VPS-Linux-Bird 2.17.1-1 ] <-l2tp-> [Other router eg 192.168.194.125 ...

Question 3

Both my cable and mobile Internet providers are unstable. I would like to make it more stable by combining together, so that if only one provider fails I still have uninterrupted internet. I need a ...

Question 4

I'm currently trying to route traffic through my VPS to my server, because my server doesn't have public IP. I'm using WireGuard to create tunnel between the server and VPS and iptables to route the ...

Question 5

I have a local network behind a Ubuntu server doing NAT, iptables, OpenVPN, and VirtualBox, all IPV4. I need VPN clients to access machines in local network. Local net is 192.168.1.0/24 and VPN net ...

Question 6

I need to redirect all traffic inside a container to my proxy. I have two scripts using tun2socks and badvpn-tun2socks. The latter is outdated, but here it is: #!/usr/bin/env bash set -euo pipefail ...

Question 7

RHEL 7.9 (will be upgrading soon). It's purpose is to host a commercial java based server/client app. The machine has two NICs: one for private LAN and one for public internet WAN. The purpose of the ...

Question 8

I have a 10-port Cisco SG-300 smart switch that I want to split in half. My PF Sense router/firewall has two Ethernet ports, where the LAN port outputs a VPN-protected connection, and its OPT2 port ...

Question 9

Debian 12 acts as a hypervisor with virtual machines. There is a dummy interface, which I called veth0. It has two IP addresses for two subnets: 10.173.177.1/24 and 10.45.113.1/24 (public subnets, hid ...

Question 10

I'm trying to setup two zones (trusted and untrusted) on my Sonicwall firewall. Lan X0, X3, X4 are assigned to trusted zone with IP 172.16.1.x. X2 is assigned to untrusted zone with IP 172.16.2.x My ...

Question 11

I guess I know the answer (I dived into research for 2-3 days already), but I would like to hear an expert's option on that. I have MediaMTX server in Singapure (mainly SRT ingress/egress and WebRTC ...

Question 12

I have a OpenVPN server and several clients that work well. I have a specific problem with one client running Ubuntu 18 and OpenVPN client v2.4.4. The client can connect to the VPN but if the ...

Question 13

I have a case where I need UBQT Edgerouters to NAT towards one net, but not another: In short, I have a Edgerouter X with two interfaces: Name IP eth0 192.168.1.1 eth1 172.16.1.1 I want all traffic ...

Question 14

Attempting to get static routes to cross from one router to another. There are two PFSense routers in a stub network called tailscale. Each of the two routers has a physical Proxmox server. I have ...

Question 15

I used to operate a network with a single firewall (Sophos UTM) that had a foot in multiple VLANs and performed as router in between those where allowed. For more security I added a second firewall ...

Question 16

I have two network interfaces: wg0 and wg1 (wireguard). Via both of these, it is possible to reach (ipv6) address fc00:77ee::4, but wg1 can only reach the address if it is in a local network. the ...

Question 17

I have the following infrastructure: Remote VM in the cloud, which has eth0 interface looking to the local vpc network, say 10.129.0.0/24. This machine is accessible via real ip address from the ...

Question 18

I am pulling my hair out on this issue, I am missing something but cannot find what. I have two separate networks in two different locations. In one location, I have multiple sub-networks separated by ...

Question 19

I have a Linux machine with multiple virtual machines and virtual network. Two Virtual Machines running web services, where VM1 provides my Website and VM2 provides a "Maintenance in Progress&...

Question 20

TLDR: I am trying to use a Synology NAS as an internal network router between my local network (with internet access) and my test network (without internet access). "NAS1" is a Synology ...

Question 21

I have this situation: _one agent inside a LAN with a dhcp internal ip, the router has a static ip _and a server that I use, inside the same LAN with an internal dhcp ip and outside the LAN with ...

Question 22

I would like to run a redundant road-warrior VPN setup inside an AWS VPC. Ideally, run two instances in two AZs and failover/round-robin between them. However, AWS doesn't support dynamic routing (...

Question 23

I'm running a server with a bunch of toggleable containers and networks. I have one gateway routing traffic to all but I find that when any are down nginx doesn't start up. stream { server { ...

Question 24

We have an E device that sends a request multicast (239.1.2.3) UDP to port 17225 in network netE. The replier listens to the multicast address request, and replies with unicast UDP to the requester. ...

Question 25

I'm trying to setup the following network: Host1 ---(VPN1)--- Host2 ---(VPN2)--- Host3 Where Host1 has IP 10.0.0.1/16 on interface tun-vpn1; Host2 has IPs 10.0.0.2/16 on interface tun-vpn1, and 10.1....

Question 26

I have configured multiple routing tables and iptables rules to manage traffic, but I am facing an issue where the first marked packet is not routed correctly according to the specified table. However,...

Question 27

I tried to build setup on OpenWRT with VPN to VPN server in Cloud. OpenWRT works as a WiFi Repeater to the building's WiFi. VPN connection by itself is stable and working fine (confirmed via tcpdump ...

Question 28

I have an App Service that is using private endpoints and private links to connect with an SQL instance in the same Resource Group. I am also trying to set up a IPsec Tunnel/site-to-site VPN ...

Question 29

I have struggled in an enterprise environment with IP changes (moving VLANS) of servers. Temporary dual homing would be an ideal solution, but after trying on and off for a year, I have always had ...

Question 30

We have a physical connection from a provider that connects two of our offices. The connection has two subnets and routing on equipment of that provider. We do not have access to this equipment, and ...

Question 31

I am running into an issue with setup where one of my remote VM can't query a bind9 DNS that I setup. So here is the setup, I have three Virtual Machines and communicating with each via a WireGuard ...

Question 32

A DHCP setup. My router reports an uplik different from what ip = requests.get('https://api.ipify.org').text does. Here's an example: $ curl https://api.ipify.org 46.10.148.15 yet the router still ...

Question 33

I am testing a scenario where we need to forward all traffic to a VM, then this VM should forward the traffic to the intended machine. (cannot say "why"). Created Vnet "VN", ...

Question 34

I have a bunch of Static Web Apps fronted by an Application Gateway. Each Static Web App is configured to use a Custom Domain (e.g. app1.example.com) which is a subdomain of a wildcard domain listened ...

Question 35

So I have an internet setup with a BGP router that provides me with my own /24 IPv4 bloc. In order to have those same IPs on a disaster recovery site, I've built a server machine on the disaster site ...

Question 36

I have a very simple setup that needs to forward traffic from a WireGuard interface (wg0) to hosts connected to a LAN interface (enp0s25). [ other LAN host ] <---> enp0s25 [ server ] wg0 <---&...

Question 37

Host 192.168.3.235 sends a ping request to host 192.168.3.234 directly to the host on the local subnet. Host 192.168.3.235 sends the replies to the request to the gateway. This seems odd to me. What ...

Question 38

I have two networks, 10.8.0.0/24 and 192.168.1.0/24. I have an OpenVPN server running on Linux with IP 10.8.0.1, and one client with IP 10.8.0.2, that has an interface in the network 192.168.1.0/24. ...

Question 39

I'm trying to understand multicast routing on Linux and have some questions regarding to it: what is the difference between route of type multicast that is usually displayed using ip route command ...

Question 40

I upgraded an unmanaged TPLink switch to a managed Linksys LGS328MPC POE switch. Traffic from some wireless clients are tagged by the AP with VLAN 3000. In the diagram, when the unmanaged switch is ...

Question 41

ENVIRONMENT Azure VM Ubuntu 18 has: 2 NICs. NIC #1: has 2 public IPs. Private IPS: 10.0.0.4, 10.0.0.5 NIC #2: has one public IP. Private IP: 10.0.0.6 OBJECTIVE How do i ultimately create a HTTP ...

Question 42

I think I'm close, but not sure how to debug further. My setup is like this: 10.241.1.11 --- (LAN) --- 10.241.1.9/10.8.0.2 --- (VPN) --- 10.8.0.1 I want to be able to connect to 10.8.0.1 from 10.241....

Question 43

I wanted to expose an IPcam to Internet using WireGuard tunnel, diagram looks like this: Client --—> ServerA -—-(wireguard)---> ServerB ---(LAN)--—> Cam I've set proper DNAT and SNAT rules; ...

Question 44

I have a Tailscale network. One of the devices advertises a subnet router for 10.1.2.0/24, therefore allowing me to remotely access parts of my network that don't have, and are not compatible with, ...

Question 45

I have the following code run on my server to allow me to SSH into my server even when the server is connected to a VPN. The code below runs as a service after startup. ip addr add 192.168.1.113 dev ...

Question 46

I am configuring a pfSense system with two WANs and have the following requirements: WAN1: This is the primary default gateway and should handle all general internet traffic. WAN2: This is used for ...

Question 47

To find a matched entry in the route table, a bitwise AND will be applied to the destination IP and the netmask in the route table. I wonder if the bitwise AND will ALSO be applied to the "...

Question 48

When I am on my local network (subnet?), I would like to go to sub1.myserver.com and for it to work the same as going to 192.168.1.99:1234 - i.e. the goal would be to use the same domain name I also ...

Question 49

My problem is probably super trivial, but I'm really completely new to these topics. I have a virtual server (Ubuntu 24.04, Plesk) with a fixed IP (123.123.123.123 in the example) with my provider ...

Question 50

I am connected through a VPN and I want some user accounts to bypass it. VPN interface is tap0 (IP is 172.16.x.x), the main one is wlan0 (IP is 192.168.10.3). All regular traffic goes to the Internet ...