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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Network with two gateways and a managed switch
I am no network engineer, but I have to find a solution to a networking problem for work. Any help or advice would be of much appreciation .
I have the following network topology:
https://drive.google....
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TcpDump shows ICMP reply but PING times out
I'm trying to redirect network traffic for a specific user account (vpnnet) to an OpenVPN server. The tunnel is working fine when the default route is pulled, but I do not want to route all traffic ...
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How to route IPv6 to the external interface?
I have purchased a VPS from IONOS. While they provide an IPv6 range 2a00:xxxx:xxxx:67::/64, they don't route it to the VPS itself, which is quite odd.
I wonder how I can achieve that. I have only 254 ...
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Windows 10 ignoring routing table
I have a Windows 10 PC that has 2 network interfaces. One of those interfaces goes into the main LAN where the fileserver, dns and the router for the internet are located. The second interface is a ...
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Linux server ignoring packets from gateway
I have a Proxmox Linux server, which is able to send and receive packets to hosts on the local network, but will not process packets from the gateway. This causes internet traffic to fail, so I can't ...
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Routing from LXC to WAN
I have a VPS with one public IP, 64.x.x.x which is assigned to enp1s0.
My goal is to have LXC container/s running on this VPS which have connectivity with the host and with WAN. That means traffic is ...
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How to configure routing in/out of VXLAN
I have several Linux hosts that are connected using vxlan. Let's call them Host A, Host B, and Host C. The config on each host is similar to this:
# Define a bridge:
cat << EOF > /etc/...
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Routing Issue: Cannot reach target server from local network
1. my setup:
I've got an optical fibre ZTE router from my ISP for internet and telephone.
My old analog phone is connected directly to the router using the dedicated phone port on my router.
(For ...
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Using OVH VRack, 2 PVEs can't fully communicate
In OVH, I have 2 ProxMox servers, each one containing a Firewall and a few other hosts. I am trying to use OVH vRack for private communication between them, but it is not working.
Here's a summary of ...
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Can a group of VMs, each with it's own public IPv4 address, mimic being on a private subnet and, if so, how can I integrate with existing network?
TLDR;Synopsis
Can a group of VMs, each with it's own public IPv4 address, be organized so as to mimic being on a private subnet and, if so, how can I connect those servers to the rest of my network?
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Testing routings in linux (iptables)
I have static routes today in linux, I will pass them with metrics, does anyone have any idea to check the route at the other end and if it goes down, the metric will be changed or something? so you ...
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AWS/Strongswan-Ubuntu Site to Site Tunnel Cannot Ping Remote
Ubuntu (Linode) Strongswan 5.6.2 Connecting to AWS (site to site).
I can ping from AWS endpoint to Ubuntu VPN.
I cannot ping from AWS endpoint to Ubuntu endpoint.
I cannot ping from Ubuntu VPN to AWS ...
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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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2 NIC and access to diffrent lan
Sorry for my English.
I have problem with configuration of static routes. My LAN looks like:
Router A - 192.168.1.1 | Router B - 10.0.0.1
Connected to :
Server Windows Server 2019
Nic1 192.168.10:...
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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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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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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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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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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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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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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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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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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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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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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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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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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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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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Make an outgoing network connection via a specific outgoing IP address on linux
I have a Ubuntu (18.04) linux server with a main network interface eth0, which has 2 IP addresses assigned to it (via systemd-networkd). The ip route routing details are pretty simple, just send all ...
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route packets from specific hosts to virtual device
PIMv2 I think the issue is with multicast.
I want to create a GRE tunnel that supports multicast PIMv2. I am seeing the server sending PIMv2 Hello messages to my gre tunnel but my machine is not ...
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Looking for the best recommendation to join two different LAN networks running on two different routers
First, I'll try to explain the current network layout. I'm not a super-experienced networking professional (yet...) and I have come up with a possible solution, but I wanted to run it by some experts ...
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Linux routing and port forwarding to a secondary network not working from WAN
I have a linux box acting as a router, with two interfaces
· eth0 - 192.168.0.61
· as0t0 - 172.27.224.1
Network 192.168.2.0/24 is accesible through as0t0, so I have this routes:
[[email protected] ~]# ...
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Chaining WireGuard Servers: Can ping both from client, but can't access internet. IP routing issue?
I am attempting a chained/double-hop VPN setup where all client traffic passes through 2 servers before reaching the internet:
Client → Server1 → Server2 → Public Internet
All peers are on these ...
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How to add the normal routing information of a router to BIRD?
Suppose the following network layout:
R1: R2:
10.1.1.0/24 <--- 10.1.1.1, 192.168.1.1 <----------> 192.168.1.2, 10.1.2.1 ---> 10.1....
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Redirect DNS server IPs on Unifi UDM-Pro using iptables
I'm using a Unifi UDM Pro as a gateway for 2 VLANs:
Main LAN (interface: br0, subnet: 192.168.1.1/24)
IoT Devices VLAN (interface: br3, subnet: 192.168.3.1/24)
Each has its own local DNS (Adguard ...
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