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Questions tagged [ip-forwarding]

138 questions
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(Mac OS PF) Redirect outgoing UDP traffice to specific ip:port

I'm having some trouble getting my head around how PF works in Mac OS. I have been doing a lot of research on the topic but just cannot find the solution (although I can find many other very similar questions without an answer). My goal is to…
logicallysynced
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Problem IP Forwarding is Dropping Rx Packets on Embedded Linux Network

I have a pc and two embedded linux based systems that I am trying to chain together through IP forwarding. They span two separate local networks. Both networks are wired. I can ping 10.10.10.6 from the PC and ping 10.10.30.1 from target 1. the…
user27670
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Layer 3 IP Forwarding/NAT between two interfaces

I have a strange configuration, let's see if you can give me some advice :) I have two networks (10.X/24 and 20.X/24) conected by a linux machine between them. This linux have two interfaces, each one atached to one of those networks. Devices…
rul3s
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2 Node Linux Cluster - Architecture Validation

so I have a 2 node galera cluster on single 192.168.10.0/24 IP subnet as on this layout: My problem is not about Galera but connectivity. Node1 is unable to reach Node2 via ICMP hence my Galera Cluster isn't working. A. No FW was activated but I…
Nantes
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IPv6 forwarding seems to only work in one direction

I now know the answer: I did a bad mistake and did not even tell you. There was also a running radvd for router advertisment and instead of RA'ing a 64-net I was RA'ing a 56-net. So the router and/or the gateway always asked a who has...…
Kev Inski
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UFW 0.35 - Redirect incoming port 2121 to port 21 on VM (other interface)

I'm posting here because I've got a server, and I want to redirect the port 2121 of my main interface (eth0) to the port 21 of my secondary interface (virbr0). This is my configuration : Physical server OS : Ubuntu Server 16.04 LTS, Firewall…
outstore
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HTTPS between two port forwarded domains in Azure, problematic?

I'm not too comfortable with these things, but quite possibly what I'm asking is trivial. I have a site hosted at foo.azurewebsites.net And also an API at bar.azurewebsites.net (WEB API as an API app) I then forwarded oof.mysite.com to…
Christofer Ohlsson
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How to prevent linux from dropping incoming packets that have a wrong mac address (promiscuous doesn't work)

I configured three machines in a static proxy_arp like manner: ----------------------+ +-----------------------------------------------+ +---------------------- Machine A | | Machine B | | …
Nicolas G
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How can I add a static route via a remote server?

I have a remote (i.e., 3 hops away) hosted Linux VM, with some LXCs. Those LXCs have internal IPs 10.0.3.* The VM has IP forwarding enabled. From my Windows machine, I would like to ping the inner LXCs, so I tried: ROUTE ADD 10.0.3.* MASK…
Paul Oyster
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iptables forward ip to another ip

I've configured multiple IP Addresses on my Ubuntu ssh server. Now the server can be accessed by using any IP Address, from 192.168.0.51 to 192.168.0.99. Depending on which IP Address someone uses to access this server, I want the request to be…
aristosv
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forwarding packet from one interface to another interface

I have an embeded system with 2 interfaces e0 and m0, whose ips are 10.0.0.20 and 192.168.0.20, respectively. Incoming packets into e0 have an ip of 10.0.0.10 and should be forwarded to m0 interface to external server whose ip is 10.0.0.30. Also,…
mark
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Forwarding IP address using pf

I'm trying to forward an external IP address to another external IP address with pf. The equivalent iptables command would be iptables -t nat -A OUTPUT -d [ipaddress1] -j DNAT --to-destination [ipaddress2]. I've tried various forms of nat and rdr…
chaz2505
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Double IP forwarding not working

I have the following 2 debian servers in my scenario: The first one is my main openvpn server, it has 2 NICS active eth0 (172.25.156.146) and eth3 (172.26.16.1) - The second server has also 2 NICS active eth0 172.26.16.16, and eth1 10.77.144.75.…
Ants0
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openvpn windows routes ip forwarding enabled but not working

I have setup an openvpn network, I have in my client windows two interfaces, one public with IP 1.2.3.4 and the openvpn interface, with ip 192.168.244.10 I am able to ping from windows to the server's interface IP 2.3.4.5 and wireshark says that the…
maiky
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Openstack instances, routing, packets not delivered for SPECIFIC services

I am taking over management of an existing openstack system at work and I have only a little prior experience with openstack. I have about 8 instances running and all of them appear to function properly in general. Each running various services.…
user3546886
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