Unexpected apache2 (and other) behaviour on upgrade to Feisty

[Nils Kassube]

Michael T. Richter wrote:
> I can access the web server from the machine itself using:
> - elinks http://localhost
> - elinks http://192.168.0.2
> - elinks http://tristan (the machine's name)
>
> From any other machine on my network the web server is invisible.  I
> can, however, ping 192.168.0.2 with no problems.  I can access it by
> SSH.  I can't, however, access it through VNC.
>
> Did some kind of firewall get included in Feisty with no documentation
> and no app in the menus to configure it?  If not, what is going on with
> my formerly-functioning system and what can I do to get it back to
> functioning?

I don't know what has changed due to your transition to Feisty, but the 
command

netstat -tan

should tell you if your web server is listening to the world ("foreign 
address" 0.0.0.0:*). If it isn't, check the configuration file(s). And 
with

sudo iptables -L

you can find out if a firewall is in use.


Nils