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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Unable to route all traffic through openconnect vpn

Feel free to give me a course correction. I'm out of my depth here. I'm using openconnect to connect to a vpn. This creates a device tun0, which I can see when I run ip address. I've successfully ...
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27 views

2 NIC and access to diffrent lan

sory for my English at first :) Second I have problem with configuration of static routs. My lan look like: Router A - 192.168.1.1 | Router B - 10.0.0.1 Connected to : Server Windows Server 2019: ...
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how to route a specific IP through a specific NIC (PC have 2x Interfaces)

i have a PC with two Interfaces. one is always left as DHCP (and for Internet access via a LAN cable at work). the second is with a fixed IP and Subnet Mask, to communicate with another Linux machine ...
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Wireguard Client IP Identification

Let's say we have the a Wireguard setup like in the below diagram (see imgur link, couldn't post image without reputation) with the following PostUp & PostDown: PostUp = iptables -A FORWARD -i wg0 ...
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GNS3 practice with Internet access, I can't access to the Internet, why?

I saw tutorial sites, videos and did what they said but for a reason that I don't know I can't even ping to the default gateway. I'm showing the router's configuration for you to see what's wrong. I ...
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RPi4 (pivpn) - how to route traffic from vpn-client on wlan0 through eth0 into LAN and back?

An external company needs vpn access to a specific PC. On this PC (Win10) a program is running which is to be controlled remotely via rdp. This PC then connects to a server (Win10). I want to avoid ...
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Linux: Is it possible to replace a routing table atomically?

Is it with help of ip route or similar a way to replace a routing table atomically? I would like to prepare a routing table and then replace an old routing table with the newly created one atomically. ...
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Not getting faster Internet speed after aggregation of two Verizon gateways [closed]

I want to increase Internet speed by using two Internet gateways instead of one. I have two Verizon home-Internet-LTE gateways. Both are connected to a TP LINK TL-SG116 Switch, which has IEEE802.3ab (...
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Connect to home network and corporate network at the same time? [migrated]

When I connect to my corporate network on Endpoint VPN, I can no longer see my local network resources (RDP to them, or connect to local shares). I am on a Windows laptop. Is there a way to have my ...
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Allow routed connections with default INPUT policy of DROP

I have a Raspberry Pi that I'm using as a router via IP forwarding + NAT masqueradeing (basically following the guide from the documentation). I would like to setup my iptables rules to drop all INPUT ...
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When connected via Wireguard to office location I can't reach other VPN server

In my office I run a Wireguard server and a Open VPN server. When I'm out of the location I can reach the machines in the office (192.168.178.0/24). I can alse reach the OPVN server on the 192.168.178....
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Why do I routes to containers locally and how can I do better?

I'm setting up a new server at a new site. The server is placed behind a router / firewall. The server shall run several LXC containers for various services. The LXC containers are connected to a ...
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How To Add Docker Container Static Route?

Have a server with 4 subnets - 1 usable IP each and each configured on separate network port on the network card. Running 4 docker containers, but they are randomly accessible upon reboot. How to add ...
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Why is my policy-routing setup not working?

I have an EC2 machine running Ubuntu 20.04 with 2 ethernet interfaces. They are both connected to the same subnet and both are reachable from the outside. I have created 2 custom route tables, one for ...
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Best way to route traffic based on logged in user via specific redundant route?

I have an Ubuntu 20.04 machine with 2 ethernet interfaces with 2 IP addresses each. It's an AWS EC2 instance and each of the 4 IP addresses has an EIP attached to it via NAT. Both interfaces connect ...
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2 Remote Sites, 2 Different Subnets, with interconnectivity. How to create a single subnet for servers at both locations?

Current Environment: We currently have 2 remote sites, both with their own LAN subnet and servers hosted at each site. Currently each site is using 1 subnet for the clients and servers. Both sites are ...
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Outbound proxy using multiple public IP addresses on EC2

We have a bunch of backend servers in the form of EC2 instances based in a private subnet in AWS VPC that need to talk to a 3rd party API. This API is limiting the requests we can send based on the ...
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Ubuntu route certain traffic from one machine through another [closed]

I am having two ubuntu 18.04/21.04 machines one "real" Ubuntu A (21.04) on my fast laptop one virtual Ubuntu B (under VMware 15.5, NAT mode, hosted on a somewhat slow Windows 10 Desktop). ...
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VMWare route certain http requests through Windows Host [closed]

I am running Ubuntu 18.4 as guest on a Windows 10 host under VMware 15.5.6 Current Network-Connection (Settings->Network Adapter) is set to NAT. My problem is, that certain http requests must (...
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WinSrv 2016 - can't access through specific port

I have problem with Windows Server 2016. I have a service running on ports 90 and 1090 - both are opened with status listening (checked with nestat -na). The machine has 3 network interfaces - I'm ...
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Wireguard use one client as gateway of another

I have a Wireguard VPN setup that basically looks like this: P1 ---- S ---- P2 --- Internet IP addreses: P1 = 10.200.1.5 S = 10.200.1.1 P2 = 10.200.1.3 I am redirecting all traffic of P1 to S by ...
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No Access to Cisco ESA from different VLAN

I am in the process to migrate to separate Vlans from a single 10.1.0.0/16 subnet on VLAN1 In the existing /16 subnet is our Cisco Mail Security (ESA). In a new Vlan Segment for clients (10.101.10.0/...
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Windows static routing not working as expected

I have three routers: Router 1 has an external internet connection. It has LAN IP 192.168.0.1 and gives IP addresses in the 192.168.0.* subnet. Router 2 accesses the internet via Router 1. It has WAN ...
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OpenVPN iptables forwading

Following setup: openvpn server with public ip, mobile clients and at home a raspberry that act as vpn gateway. All mobile clients get a route from the openvpn server so that they I can connect into ...
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IPtables rules to bypass squid proxy

I Think I just need a sanity check on some iptables rules. (spoiler alert its not good.) The basic issue. We have a Squid Proxy server that is interfering with Various internet resources. I am remote ...
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How can I setup NAT with multiple public IPs (/29 subnet) on pfSense?

Our ISP provides a /29 subnet which includes the following IPs: Network Address: 199.1.1.0 Router/Gateway Address: 199.1.1.1 Usable IP addresses: 199.1.1.2 - 199.1.1.6 I would like each of the 5 ...
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Traceroute works but nc fails - Where is my port being blocked?

I am trying to troubleshoot two Azure VNETs that have been peered together. Lets call these VNETs A and B. There are multiple services running on a VM in VNET A on different ports. I am trying to ...
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iptables with public /24 subnet

I'm running an linux box with my configuration at this moment is: Interface enp7s0f0 Transit ISP1 Interface IP: 100.100.100.2 Gateway ip: 100.100.100.1 Interface enp7s0f1 Transit ISP2 Interface IP: ...
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No internet IP routing on Windows 10 client connected to LT2P/IPsec VPN on Windows 2019 server

I have set up a VPN from a Windows 10 client to a Windows 2019 server. After connecting using rasdial <VPN NAME> <USER NAME> <PASSWORD> I sucessfully issue a net use <DriveLetter&...
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Route TRaffic from tunnel interface to Internet DSLite

I am setting up DSLite AFTR in Ubuntu machine. I am able to setup the tunnel between Rpi(B4) and Ubuntu(AFTR). The tunnel is of type IPv4inIPv6. I am running Dibbler server on Ubuntu and dibbler ...
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How to redirect traffic from squid to vpn?

I have a windows machine with a squid server and VPN client connection(which is not the default gateway) What I want is to redirect some traffic from squid to my default ethernet connection and some ...
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Routing traffic from Server A via VPN Server B

I have IPSec (Libreswan) Server B (10.0.0.2) and a Server A (10.0.0.1) within the same network. Both servers have only one external network interface. I want to route the packets from Server A with ...
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Some packets are not being routed through the local network when using nordvpn

My local network has two relevant subnets: 192.168.1.0/24 and 192.168.72.0/24. These are defined via my router. There's a local server running at 192.168.1.10. The server runs a Home Assistant ...
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Multiple Network Interface Not Working Properly

I have two network interfaces on my Linux CentOS. When I tried to access the web server from outside network via eth0 it works properly. But when I tried to access via eth1 it gives me time out. Here ...
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EC2 instance running Ubuntu as a router to Wireguard network

I have one machine in AWS EC2 running Ubuntu 16.04 (B) with Wireguard running as a VPN server for some Road Warrior devices (C). I'll try to sketch it below: +-----+ +-----...
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No IPV6 internet connectivity on client side of OpenVPN AWS EC2 server?

I have an OpenVPN server I've set up on an AWS EC2 instance that is pulling an IPV6 address, and can traceroute6 and ping6 ipv6.google.com. The client can do neither and does not return an address ...
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TCP handshake not completing intermittently to specific Cloudflare node

I have setup a webpage with Cloudflare that works nearly all of the time, except occasionally the TCP handshake fails with the SYN+ACK not making it to Cloudflare. On a packet capture from another ...
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120 views

How to route lan trafic over VPN

I have two computers connected to same VPN (hamachi) network. There are in different places. Lets say I have this addresses: Machine A: (rpi zero - using wifi) wlan0: inet 192.168.2.160 netmask ...
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54 views

Front Door Standard/Premium (Preview) - Unable to Add Wildcard Custom Domain with SSL Certificate

I've got an Azure FrontDoor (preveiw) Premium endpoint setup and I'm trying to add a custom wildcard domain (*.example.com) so that I can use the Rule Set to direct traffic between server environments ...
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154 views

Load balancer or proxy to route traffic to different servers based on their URL

I have many customers with their own nameservers, I want to give them all the same DNS details like how Squarespace or Shopify do (eg an @ A record and a www. CNAME that is always the same), and then ...
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Debian with 2 ethernet as VPN relay (route all traffic from eth0 to eth1 VPN)

Background I got 2 Debian VMs, first one is pptp/wireguard server on WAN 10.10.0.1 and second one's eth0 192.168.100.1, eth1 172.16.100.1. Note: WAN IPs written in private ranges Intentionally ...
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Block IPv6 on Tun0

I'm setting up a VPN tunnel for some services. I created a vpntunnel/vpntunnel user/group that is routed to the tun0 interface based on the group ID. That works quite fine. Commands below run as ...
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127 views

How to change openvpn client route gateway

I have an openvpn 2.4 running very well, but a new requirement comes. I need to create iptables rules for diferent client ip segments for giving they access to a few services in our network. So I ...
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635 views

Redirect 127.0.0.1:80, 127.0.0.1:443 and 127.0.0.1:8080 to an Hyper-V virtual machine

Alright so the title may be a little misleading but that's the best I could find. Here is what I am trying to accomplish: I am on Windows 11 Pro. I have a virtual machine running Debian 11 on Hyper-V. ...
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43 views

OpenVPN network on the client side

I have the following configuration. VPS with Windows Server 2019 and with public IP. I have OpenVPN server installed on it and TUN adapter with 10.8.0.1 IP Here my OpenVPN server configuration port ...
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does google cloud support ipsec encapsulated gre tunnels

I can't seem to get a pim set up on google cloud where multicast traffic is sent over a ipsec encapsulated gre tunnel. Does google cloud ec2 instances and network block this type of traffic?
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networking default gateway, default route

in ipv4 cidr notation you can have an ip address like 10.10.20.0/24 it's expanded to network : 10.10.20.0 first ip : 10.10.20.1 last ip : 10.10.20.254 broadcast: 10.10.20.255 netmask : 255.255.255....
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Trying to set specific Public IP for each PPTP VPN user from Linux server

I have a PPTP VPN server. There are 5 users. I want to give each user one specific Public IP address. I have been trying to do this with iptables. IP information Range: 50.250.█.81 to 50.250.█.85 CIDR ...
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43 views

routing incoming traffic to dummy interface

have default interface eth0 with ip address 192.168.0.100, I created a dummy interface with ip address 192.168.5.100 I have traffic coming through eth0 that I would like to have forwarded to 192.168.5....
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Why brctl stp cannot prevent the loop?

Even the STP is enabled through brctl stp switch on on a looped network, the packets cannot be forwarded successfully. Please note that if there is no loop in the network, then everything is ok. The ...

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