Questions tagged [ip-routing]

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Decoupling IP address from hosting provider

We run a service that provides on demand websites to our users as part of our offering. In order for our users to use their own domain with our website feature, we have them create an A record to our ...
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2answers
108 views

Multi hop routing

I'm trying to communicate from the tx.py program to send packets (UDP) down to device 1 and device 2 shown in the picture. Currently we have OpenVPN clients running on 2 of our VMs and if I run tx.py ...
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1answer
29 views

Super user limited to changing route table

Background: I am trying to implement dynamic routing for a system. Is it possible to create a super user that is restricted to changing the routing table? Something like a restricted sudo that can ...
2
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1answer
35 views

proto static metric for overlapping prefixes

Can someone please clarify how the route metric is set by Centos 8 in the following situation. I have two vlans on the system, each of which has a matching route prefix defined in /etc/sysconfig/...
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17 views

Can VPN Client work on Windows Server 2016?

I've setup a VPN Server (Remote Access) on my Windows Server 2016, which is mostly used for hosting web applications in development state, so there is not much configured on that, not even an AD. The ...
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61 views

DHCPOFFER not crossing virtual bridge on Linux?

I have a physical host machine running Ubuntu 20.4LTS (fully patched) attached to my network, which retrieves it's IP address via DHCP. This works. I have a VirtualBox VM on that host attached to a ...
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124 views

Port-Forwarding and Routing on Windows Server 2019

we run several virtualized servers (all Windows Server 2019) in a cloud environment. There is one server used as router (with a public IP and a privte IP 192.168.100.10) and two further servers have ...
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15 views

Routing Public LAN (/28 block) over Peer to Peer (/29 Block) Gateway Connection

Comcast ran an EDI circuit (Metro Fiber) to our office. They originally gave us. /29 block but we needed additional public addresses. I am able to assign any of the useable addresses from the /29 ...
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46 views

IP forwarding with iptables

Im new with this scope. I need your help for this setup. I have 3 linux systems that may seems look like this. System A System B System C ---------- ----> ------...
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0answers
21 views

Linux router over VPN

I have a Linux (Ubuntu 18.04) device with 4 Ethernet ports and a LTE wwan card that I want to turn into a bridge and router. However, I don't want to enable NAT via the LTE connection, but route all ...
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0answers
49 views

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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0answers
48 views

Ubuntu 16.04 server loses default route on restart

One of my Ubuntu servers always loses its default route when restarted. I have a second server which has an almost identical set up which works fine. I am not sure when the problem started but it ...
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1answer
302 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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1answer
720 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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0answers
128 views

Linux IPv6 + Hurricane tunnel = no IPv6 traffic from gateway, internal network works fine

This is a head scratcher to me. Set up: Linux (openSUSE 15.1, kernel 4.12.14) run as a gateway on my local network. I have an IPv6 tunnel with Hurricane Electric (HE) that has been working just fine. ...
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0answers
32 views

Layer 3 Interfaces on Cisco Catalyst 2960-C

I am working with a Cisco Catalyst 2960-C, and I can't see equivalent configurations to apply layer 3 interfaces. The switch is configured for routing and does routing. On a Cisco SG 300 Series, I am ...
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1answer
25 views

Can't get linux router/iptables masquerade working

Hope someone more clever than me could help because I am out of ideas... We want to create (in openstack) a router that will...route (haha) trafic from one network to the other. Simple. This is what I ...
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0answers
17 views

Routing on multiple adapters and switches

I’ve two router in office with two different switches. first one in internet and it’s sharing through a switch between clients (every pc has 2 network adapters) the second one is a special MAN network ...
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0answers
265 views

How to push a gateway and route to an OpenVPN client?

I need to setup a OpenVPN network which will probably grow to a serval hundreds of clients in the next few months. Some of the clients are servers and others are devices that need services, hosted on ...
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0answers
33 views

Static route between 2 routers

Hello I have problem with static routing between 2 simple (Zyxel and TPLink) routers. vDSL Router 1 has 192.168.0.1/25 with enabled DHCP and Router 2 has 10.0.0.1/25 also with DHCP Router 1 and Router ...
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1answer
37 views

Routing between two private subnets attached to a host

I have four linux hosts networked together on a private 172.16.x.x/16 network. One of these hosts, call it host 1, has two NIC interfaces, one on the 172 network, and a second NIC which is attached ...
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0answers
47 views

Docker and local address binding via OpenVpn

I have two systems one is a vps hosted in a data centre and one is a system I have locally in my own network at home. I am deploying some stuff on the vps via docker and I have some ports eg 80 443 ...
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1answer
64 views

Routing in linux with two nics

I've been squeezing my mind with this problem since a couple of days, unfortunately I can 't find a way out. May be it's lack of theory or just a bad setup. I will appreciate a bit of help :-) ...
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2answers
127 views

OpenVPN server with 2 Public IP

This server has 2 IP addresses as follows. 11.22.22.44 : primary address & exit ip address 11.22.33.55 : secondary address, non-exit ip address, used for openvpn client to connect to i can ssh ...
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0answers
26 views

Replacing legacy Cisco 800 serie router by Cisco RV260

I try to replace a legacy 800 router by a brand new RV260 router. Our configuration is simple: LAN : 192.168.2.0 -> router LAN is 192.168.2.1 WAN : 192.168.1.2 default gateway on 192.168.1.1 -> ...
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1answer
279 views

Select next-hop based on source address

I'm trying to set up a Ubuntu-based gateway between clients and the core router, the ideal traffic flow should be: ClientGroup 1 (10.0.0.0/24) -> Ubuntu gateway (10.0.0.2) -> Core router (10.0.0.1) ->...
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1answer
33 views

Virtual network interface in Windows

i am trying to setup a VPN server tunnel on my windows PC so that i can connect to it using remote client VPN hence routing traffic through that tunnel client = android
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1answer
16 views

VM client doesn't route packages correctly anymore (to specific networks)

I have kind of a strange problem. After rebooting a server a few days ago, it doesn't route its packages correctly. It basically doesn't answer (pings for example) if these packages come from specific ...
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0answers
346 views

Guide to exclude traffic on certain ports (22, 80) from being routed via OpenVPN (client) on Linux/Ubuntu 18.04?

I'm running a VPN client on Ubuntu, and I'm looking for guidance on how to exclude certain ports from being routed through the VPN client (OpenVPN). For example, how would one go about excluding ports ...
4
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1answer
831 views

networkmanager-strongswan vpn - routing specific ip through VPN

I'm trying to setting a VPN on Linux Mint 19.2. I'm using the network-manager-strongswan so I added this file named VPN under /etc/NetworkManager/system-connections/ [connection] id=VPN uuid=...
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0answers
3k views

Cannot connect to Flask server via public IP, only private IP

I have a simple Flask server that echos requests it gets to the terminal. Requests I send it via the device's public IP address do not register. The flask server is started correctly on all ...
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1answer
65 views

Forcing route to interface, no matter what

I've got 2 interfaces on my server (eno1 & eno2). Whenever any process try to reach an IP (lets say 183.182.99.1), I want the traffic to use the eno2 link. Here is my current routing table: ...
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2answers
81 views

AWS EC2 public IP unreachable over IPSec VPN but private IP still reachable

We have a FortiGate (FortiOS 6.0) connected to a IPSec Site-to-Site VPN (Dynamic BGP) on AWS. When the VPN is up, we can only access EC2 using the private IP, public IP no longer works. Only the ...
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1answer
82 views

No uidrange rule with IProute2

When I run "ip rule help" there is no uidrange option in the selection sectors. I also get an error when I try to add a uidrange rule. Iproute2: 4.9.0-1 Command: sudo ip rule add uidrange $uid-$uid ...
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0answers
142 views

How to change Public Address of VPS with another IP Address

For a project, I need to make HTTP requests to an external service from a IP address geo-located on "NATION_2". Having an available VPS located in NATION_1, I proceeded to purchase a public IP ...
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2answers
206 views

linux - routing between bridge networks without overlay

Here's the scenario. There are two hosts in a subnet (both are virtualbox VMs) and both are on the same network 192.168.1.0. I've additionally created two bridge interfaces with separate network ...
2
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2answers
300 views

OpenVPN client lan to reach Server lan

I have OpenVPN Server running in VPC and client running in office network. Have following table on 10.24.11.37 # route -n Kernel IP routing table Destination Gateway Genmask ...
2
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1answer
70 views

What is this routing concept called? Trouble learning more on LAN-to-WAN-to-LAN routing

On a simple network, my nginx logs will the gateway address (10.0.0.1) instead of the internal client address (10.0.0.19) when I'm using DNS (e.g. foo.com) to access a server inside the LAN. I'm ...
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1answer
106 views

Convert one interface to a tunneled interface

I have a server with 2 WAN interfaces, eth1 and eth2. Each one have one router connected which gives them these IPs: 192.168.3.101 and 192.168.1.101. The thing is that I want to completely avoid ...
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3answers
586 views

How Akamai CDN serves the content from closes edge server to user ?a

After going through some resources on google, got the idea how Akamai CDN edge servers works but got some questions about internals. Say I have got static content cached at Akamai CDN(XXX.XX.XXX.XXX ...
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1answer
404 views

Ubiquiti EdgeRouter uses default route over static when responding to ICMP

I need to have a working connection between two router devices and the subnets behind them. Everything else in the setup seems to work except one static route. Here is the basic information about my ...
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0answers
48 views

How to handle VPNs and native IPv6

I've got native IPv6 via my ISP (they give me a /48). Using RAs (SLAAC), my router is advertising a particular /64 to machines in my network - in other words my network has full native IPv6. My ...
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2answers
6k views

CentOS7: Multiple Interfaces, default route

[First post here...] Hello everyone, I have a CentOS 7 box which is supposed to become a node of a ganeti-cluster. It has 4 interfaces: eno1, eno2 - on the mainboard ens23s0f0, ens23s0f1 - a ...
0
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1answer
239 views

Iptables forward incoming traffic multiple ip

I have a server with 5 ipv4 95.x.y.1 95.x.y.2 95.x.y.3 95.x.y.4 95.x.y.5 and I need to forward only the incoming traffic from port 80 to port 8080 (and same ip) so 95.x.y.1:80 --> 95.x.y.1:8080 ...
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1answer
438 views

Dante on multiple gateways in subnet

I have two gateways in my subnet. 192.168.1.2 - main 192.168.1.1 - secondary (yeah that's not a mistake) So I am using 192.168.1.2 everywhere as default route Is it possible to configure danted so ...
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2answers
1k views

Tyring to figure out ip-route

I've been playing with packet tracer and trying to fully grasp ip routing. So far I'm doing ok i think. Why am i able to ping r3 from pc1 (route working correctly as it should) vice-versa but cant ...
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1answer
48 views

map local address to external one?

Currently I have a network setup like this: Router (aka. OuterRouter) to connect to the Internet (localIP: 192.168.0.1/24, externalIP: <whatever, provided by ISP>) Router (aka. InnerRouter) ...
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1answer
62 views

ip routing src rewrite

been fighting on this configuration for too long. Let say a public IP : 1xx.24.184.yy/32 Let say a private network : 10.184.yy.0/28 gw 10.184.yy.3 Now I would like my public IP routed ...
6
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1answer
2k views

ip rule and route doesn't get respected

I'm trying to route packets based on their source address, and have added the following: # ip rule add from 10.10.10.0/16 dev eth0 table foobar # ip route add default via 100.100.100.1 dev eth0 table ...
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1answer
42 views

Time Clock IPsec and Layer3 Routing

Thank you for your time, I incorrectly asked this in Network Engineering so I'm moving it here. I have a Remote Office and a Main Office linked via IPSec with the Main Office being 192.168.16.0/24 ...

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