0
votes
1answer
18 views

block forward traffic targetting another network

I'm learning about a bit more about firewalld and I've been able to create an unsafe network to where I can connect from my internal network, but now, I'm stuck trying to prevent the unsafe network ...
0
votes
0answers
31 views

Routing/forwarding aren't working with quagga [partially]

I have the following design: [m1] eth1 10.10.1.1, cable m1m2 || [m1] eth2 10.10.2.1, cable m1m4 [m2] eth1 10.10.1.2, cable m1m2 || [m2] eth2 10.10.3.2, cable m2m3 [m3] eth1 10.10.3.4, ...
0
votes
1answer
240 views

Port forward remote desktop without a gateway over 3G modem router [closed]

I'm trying to connect from a laptop, through a VPN, and a 3G modem/router, to a remote PC / computer. PC (192.168.1.33) | 3G Modem (192.168.1.22) | [3G internet, connecting to VPN] | ...
0
votes
1answer
75 views

Forward all network packets from server A to server B (WAN) Ubuntu

I currently run a game server on a VPS and will shortly be moving VPS provider. To make the migration easier on the players I would like players to be able to use the original IP for a short while by ...
0
votes
1answer
2k views

Transparent Ethernet over GRE not forwarding traffic

I am running on Linux 2.6.30.9 and have been trying to setup a transparent ethernet over GRE tunnel. The network topology used is as follows: I want to bridge PC1 and PC2 using Transparent Ethernet ...
0
votes
1answer
306 views

how to forward all traffic on specific interface to ip address

I have one Linux machine that have 2 interfaces. The first one is used as a default one and provides access to internet, the second interface was added as a dedicated link to send packets from tcpgen ...
0
votes
2answers
298 views

Ubuntu-Server router - forwarding/routing does not work

This is more or less a pretty general question about forwarding and routing with ubuntu server or any linux system, i guess. The server manages a school network and has 8 NICs - each on a different ...
0
votes
2answers
1k views

OSPF routers (with BIRD on debian) recognize each other as neighbors but can't ping each other

I've created a "line" topology using virtual box - creating 4 machines and making a separate link between each using internal networks - R1 (eth0, 10.0.1.1) <-> (eth0, 10.0.2.1) R2 (eth2, 10.0.2.2) ...
0
votes
1answer
106 views

Redirecting port A -> B and blocking externally B

I want to redirect port A to port B and EXTERNALLY block port B. A = 9922 B = 22 (Yes, it's ssh, and NO I cannot change it in configuration.) I have three interfaces: lo (loopback) p36p1 ...
1
vote
3answers
529 views

Linux routing - Access external IP from LAN

I'm using OpenWRT (linux based) on my router. The router has a local IP and a public IP. I have a dyndns name assigned to the public IP. The router is forwarding several ports (e.g. ssh and https) to ...
1
vote
2answers
2k views

Difference between routing and forwarding table

What is the difference between forwarding and routing tables?
1
vote
1answer
69 views

Junos Routes - Route Specificity vs Protocol

I am trying to load balance a router to send traffic over two uplinks (with equal capacity). I generated static routes for every /8 on the internet (for ipv4) and plugged it in. Unfortunately it does ...
0
votes
1answer
142 views

IPv6 routing to another interface

I'm trying to get an IPv6 enabled router to forward data from one interface to the other and I'm having issues. When following this example ...
0
votes
1answer
330 views

How to route, using Linux, from nested private subnets to internet [closed]

In our departement we have a blade system with one master node and four slave nodes that are connected to the master node. The system uses its own subnet (192.168.1.x) and only the master node is ...
3
votes
0answers
637 views

Forwarding traffic from TUN device (C++ backend) to the default gateway

The following problem is just a piece of the bigger solution I have a problem with. All other elements seem working so far, so I'll try to describe very small piece which I have problem with. I've ...
1
vote
1answer
218 views

How to go about traffic forwarding

There's a server (node A), acting as the end point of a GRE tunnel. Also there is an Ubuntu server (node B, it sees Internet) acting as the termination point for the GRE tunnel. Some devices (nodes ...
1
vote
1answer
427 views

Exim Router Forwarding

I am looking to use exim on a 'frontend' simply to hide the IP of the true backend mail servers. This exim configuration will server for multiple domains. Really what I am looking for is confirmation ...