Questions tagged [ip-forwarding]

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7 votes
2 answers
41k views

How do I forward/NAT all traffic to one interface/IP to a remote IP?

I have one "server A" that has multiple IPs attached to it, like so: eth0:0 1.1.1.1 eth0:1 1.1.1.2 eth0:2 1.1.1.3 I have another "server B" that also has multiple IPs attached to it, like so: eth0:...
Daniele Testa's user avatar
5 votes
2 answers
13k views

Pings from VPN network to VPN client work; pings into from VPN client to VPN network fail - why?

We are in the process of setting up an OpenVPN server for some servers running in a cloud. We are stumped with a connectivity problem whereby the hosts on the VPN server's LAN can ping te VPN client, ...
jonseymour's user avatar
1 vote
1 answer
5k views

NFTables: is it possible to forward traffic without masquerading it?

I have a remote server (B) that forwards certain incoming traffic to another port of a different server (A, dest). With "masquerade" I only see traffic coming from the forward server (B), is ...
Polizi8's user avatar
  • 125
1 vote
0 answers
458 views

Linux Kernel IP Forward activated, firewalld is bypassed?

On a Linux Centos7, I have some traffic that is routed with static routes from one interface to another. I did notice that with firewalld activated, both interfaces added in a zone, and nothing ...
Carbon69's user avatar
0 votes
1 answer
128 views

iptable's ip forwarding results in weird behaviour

My target is simple : Build a high volume, fast, low latency soft switch using IP forwarding. I have a server test 'Server' and 2 test clients : 'Client1' & 'Client2'. 'Client1:c1' is sending udp ...
Nafiul Alam Fuji's user avatar