Problem in seeing web pages behind a DSL modem/router after apt-get upgrade

[Federico Munerotto <mune@ieee.org>]

System:
local network is 192.168.1.x; a modem/router DSL which acts as gateway 
let my local network to browse the internet through address translation. 
Also it has a very confortable option called "virtual server" that 
forward to a certain all the traffic to&from a certain port. So I made 
my Debian box be http server saying that all traffic on port 80 of the 
public static IP should go on port 80 of IP 192.168.1.10 (my machine).

This has worked fine until two weeks ago.
Then I dit apt-get update/upgrade.
Now when I point the  browser to my public IP I don't see my localhost 
web page, but people in the internet can see it instead of the modem web 
page that I see.

Does anyone know what in the upgrade might have done this?

Thanks in advance

--
Fede
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       mune at ieee.org            Ing. Federico Munerotto
   home    http://www.krl.it/~mune
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