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Bug #8341

closed

NAT Port forwarding issues (port collision from internal host)

Added by Beat Siegenthaler about 6 years ago. Updated about 6 years ago.

Status:
Rejected
Priority:
Normal
Assignee:
-
Category:
-
Target version:
-
Start date:
02/20/2018
Due date:
% Done:

0%

Estimated time:
Plus Target Version:
Release Notes:
Affected Version:
2.4.2_1
Affected Architecture:

Description

I think this should be omitted by design:
Found following constellation who troubled me for many hours:

PortNAT: Internet incoming -> DstPort 55555 -> Internal host "UNO" DstPort 55555
LAN host "DUE" connects with (random) SrcPort 55555 to DstPort MQTT internet

In this case MQTT is a longterm active connection and omits new connections for the incoming PortNAT for many hours.
As workaround i made a rule who blocks LAN outgoing src port 55555
But i think this is something that should be solved internally?

Files

natissue.txt (1.69 KB) natissue.txt Situation Beat Siegenthaler, 02/20/2018 09:47 AM
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