closed / stealth ports

[UBUminJ]

Just switched from Windows to Ubuntu, so I am not yet very knowledgable about Linux. Sorry.

On my Windows all ports are in stealth mode (using Zonealarm, checked by "Shields Up", https://www.grc.com/x/ne.dll?bh0bkyd2).
On Ubuntu most ports are closed but not stealth ?
Why not ?

Thank you.

Michael

[bodhi.zazen]

It is a matter of semantics.

In Linux the firewall is iptables.

iptables will do 1 of three things (basically) with a packet ..

Accept

Drop

Reject

Drop = "stealth"
Reject = "closed"

See : http://bodhizazen.net/beginners/Firewall/

I have a short section which discusses "Shields up".

Both closed and stealth are secure.

[UBUminJ]

Thank you for your answer and the link to your Iptables primer.

[bodhi.zazen]

You are most welcome.

[sahabcse]

Hi

Try UFW (Uncomplicated Firewall). It is default fire wall, easy to manage iptables.Try for more info

================================================
https://help.ubuntu.com/8.04/serverguide/C/firewall.html
=============================================


Regards
Sahab

[cdenley]

On Ubuntu most ports are closed but not stealth ?
Why not ?

Why would you want them stealthed?

[howlingmadhowie]

You are most welcome.

nice tutorial, bodhi.

a few suggestions for the css cos it's hurting my eyes atm!

for div#content:
font-size:12px;
font-family:sans-serif;
padding-left:200px;
padding-right:120px;

p.code
font-family:monospace;

h2
margin-left:-50px;

[bodhi.zazen]

nice tutorial, bodhi.

a few suggestions for the css cos it's hurting my eyes atm!

for div#content:
font-size:12px;
font-family:sans-serif;
padding-left:200px;
padding-right:120px;

p.code
font-family:monospace;

h2
margin-left:-50px;

Thank you for the suggestions with css, greatly appreciated as I am more comfortable with the back end.