where is the firewall?

[robert rottermann]

Hi there,

I inherited the support of a upuntu server.

lsb_release -a shows
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 6.06.1 LTS
Release:        6.06
Codename:       dapper


it seems to be a rather old version (it has an uptime of some years ..)

now I have never been dealing with ubuntu or an other debian based system, so I
migth ask some dumb question..

first: where is the firewall, how do I configure it?

iptables -L shows nothing.

if there is (as I am afraid) no firewall, how is the access from the internet
block (the box is is used as a webserver).

thanks for your time

robert