Ubuntu

firewall: incoming open by default?

Asked by Roman Polach

In Edgy docs I have read that firewall is set to deny
incommng packets by default immediately after installation,
but iptables -L shows that INPUT is fully open if I understand
it correctly:

# iptables -L
Chain INPUT (policy ACCEPT)
target prot opt source destination

Chain FORWARD (policy ACCEPT)
target prot opt source destination

Chain OUTPUT (policy ACCEPT)
target prot opt source destination

Is it a bug?

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Alan Pope 🍺🐧🐱 🦄
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Daniel Hahler (blueyed) said : 		#1

Where is "Edgy docs", and/or: which part of it do you mean?

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Best Alan Pope 🍺🐧🐱 🦄 (popey) said : 		#2

You may have misunderstood the documentation.

It is my understanding that on an Ubuntu install there are no network services running (ssh, http, ftp, telnet etc), and the firewall is open. It's open because there is nothing behind it. If you choose to install and run services then you might want to configure the firewall.

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Roman Polach (rpolach) said : 		#3

User confirmed that the request is solved.

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Roman Polach (rpolach) said : 		#4

Only note: I was found the place where I have read about
blocked incoming connections by default: http://www.linuxworld.com.au/index.php/id;921958194;fp;2;fpid;37
It is a LinuxWorld arcticle, not an edgy documentation.