[Tilesathome] Bad Gateway

[Dirk-Lüder Kreie]

Sabine Sagner-Weigl schrieb:
> Hi!
> 
> I still have some problems uploading certain tiles.
> I get one of the following messages: 502 Bad Gateway or 500 read timeout
> 
> It has nothing to do with the file size (sometimes just 10kb).
> If I copy the file into the upload-Directory of another client in a different
> location it will be uploaded at once.
> 
> Finally, I searched my logfiles und found messages from the firewall on 
> my DSL-router (a vigor):
> Jul 16 00:22:52 xxxxx Vigor: IM Block(QQ) lan 192.168.xxx.xxx,53087 -> 137.110.119.130,80 PR 6 len 20 1442
> I see these messages from the time of the first try to upload the file
> until the file is removed.
> 
> Wikipedia tells me, qq is a instant messenger. As far as I know, there is 
> no IM installed on this (Debian) machine.
> 
> So why would my router consider an upload as an instant message?

Your Firewall is badly broken, because it confuses random source ports 
with destination ports.

Basically it's how TCP/IP works. you connect from a source port 
(pseudo-randomly chosen from available ports) to a destination port 
(like 80 for http, those are defined and by no means random).

If your firewall can't tell the difference it has a severe bug.

-- 

Dirk-Lüder "Deelkar" Kreie
Bremen - 53.0952°N 8.8652°E

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