Re: [opensuse] simple firewall scripts

2007-07-29 Thread Theo v. Werkhoven
Sun, 29 Jul 2007, by [EMAIL PROTECTED]:

 On 07/29/2007 06:14 AM, Theo v. Werkhoven wrote:
  Maybe it's just me, but I don't find the way SuSEFW2 does things
  simple at all.
  For a 'set and forget' network it probably works, but for a network
  with rules that are subject to change weekly, if not daily, this file
  is just too unreadable, because of all the comments lines that
  clutter the content.

 We are all different.  Those comments are one of the main reasons I was
 able to get it working when I first started with 6.4.  The docs, etc
 were less than helpful, but the comments in the config file were (are)
 fantastic, and for me explain each setting in a way that I was and am
 able to work with it.  To see you call those clutter shows me how
 different we all are.

To each his own, or, as the French say: Vive la Différence

Theo
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Re: [opensuse] simple firewall scripts

2007-07-29 Thread Darryl Gregorash
On 07/28/2007 04:14 PM, Theo v. Werkhoven wrote:
 Sat, 28 Jul 2007, by [EMAIL PROTECTED]:
 snip
 Please tell me that this script is rubbish and I should look elsewhere. Or 
 else please tell me what I'm missing.
 

 It's not rubbish, but it does have serious limitations, at least,
 for me.
   
Quite true. SFW2 is a nice generic firewall that can fill many basic
needs, but that is also its greatest drawback: it is designed to fulfil
a great many basic needs, and so is not nearly as flexible as is needed
in a more complex situation.

Most opensuse users can probably do all the firewalling they need with
SFW2, but more serious requirements demand a more serious and flexible
firewall builder.

-- 
Hypocrisy is the homage vice pays to virtue. -- François de La Rochefoucauld

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Re: [opensuse] simple firewall scripts

2007-07-28 Thread Anders Johansson
On Friday 27 July 2007 13:29:56 Wolfgang Rosenauer wrote:
 Now I still need to control which traffic is allowed from the inside to
 the internet which was done via FW_MASQ_NETS in SF2.
 Since I want to get rid of a second masquerading, SuSEfirewall has no
 mechanism to control this traffic anymore.

How about FW_FORWARD, which controls which IP addresses or subnets are allowed 
through, without any masquerading being done

Grüß

Anders
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Re: [opensuse] simple firewall scripts

2007-07-28 Thread Theo v. Werkhoven
Fri, 27 Jul 2007, by [EMAIL PROTECTED]:

 Sloan wrote:
  Theo v. Werkhoven wrote:
  Fri, 27 Jul 2007, by [EMAIL PROTECTED]:
 

  I plan to look at shorewall but thought I'd just ask here for
  recommendations.
  
  Look no further.

  
  I personally prefer the basic linux firewall module that comes with
  webmin. I found it very easy to understand, and easier to implement
  exactly the rules I wanted than with the suse firewall.
  
  YMMV
  
  Joe
 Have yu looked at firestarter?

Yes, and I don't like GUIs for such basic funcionality.
First of all I'm almost always login in through ssh to the server
that's running the firewall, so that makes a frontend with
text-files much easier to use.
Second; seeing all the rules in one page, exactly as they are going
to be installed is the only way to make sure the frontend does what
I mean, not what a program with fuzzy controls thinks I mean.

Theo
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Re: [opensuse] simple firewall scripts

2007-07-28 Thread Wolfgang Rosenauer
Hi Anders,

Anders Johansson wrote:
 On Friday 27 July 2007 13:29:56 Wolfgang Rosenauer wrote:
 Now I still need to control which traffic is allowed from the inside to
 the internet which was done via FW_MASQ_NETS in SF2.
 Since I want to get rid of a second masquerading, SuSEfirewall has no
 mechanism to control this traffic anymore.
 
 How about FW_FORWARD, which controls which IP addresses or subnets are 
 allowed 
 through, without any masquerading being done

Hmm, somehow I missed this because I've read the sentence Which
services accessed from the internet should be allowed to the
# dmz (or internal network - if it is not masqueraded)?
So I always thought it would only work from FW_DEV_EXT to the other
interfaces and not the other way round without looking deeper into it.
But in fact it seems to be independent from the actual devices.

Thanks for the heads up,
 Wolfgang
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Re: [opensuse] simple firewall scripts

2007-07-28 Thread primm
On Friday 27 July 2007 23:14, Theo v. Werkhoven wrote:
 Fri, 27 Jul 2007, by [EMAIL PROTECTED]:
  I plan to look at shorewall but thought I'd just ask here for
  recommendations.

 Look no further.

That's worrying.

Simple firewall script(s)? How about etc/sysconfig/SuSEfirewall2? It's there 
and it just works. Yast edits it for you if you want pure simplicity.

Please tell me that this script is rubbish and I should look elsewhere. Or 
else please tell me what I'm missing.

Cheers, Lynn.
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Re: [opensuse] simple firewall scripts

2007-07-28 Thread Theo v. Werkhoven
Sat, 28 Jul 2007, by [EMAIL PROTECTED]:

 On Friday 27 July 2007 23:14, Theo v. Werkhoven wrote:
  Fri, 27 Jul 2007, by [EMAIL PROTECTED]:
   I plan to look at shorewall but thought I'd just ask here for
   recommendations.
 
  Look no further.
 
 That's worrying.
 
 Simple firewall script(s)? How about etc/sysconfig/SuSEfirewall2? It's there 
 and it just works. Yast edits it for you if you want pure simplicity.

Maybe it's just me, but I don't find the way SuSEFW2 does things
simple at all.
For a 'set and forget' network it probably works, but for a network
with rules that are subject to change weekly, if not daily, this file
is just too unreadable, because of all the comments lines that
clutter the content.
The small, less than 1 page, files in Shorewall have man-pages, so
if I'm puzzled, I do '^Z; man shorewall-..; q; fg' and carry on.

 Please tell me that this script is rubbish and I should look elsewhere. Or 
 else please tell me what I'm missing.

It's not rubbish, but it does have serious limitations, at least,
for me.

Theo
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Re: [opensuse] simple firewall scripts

2007-07-28 Thread Joe Morris (NTM)
On 07/29/2007 06:14 AM, Theo v. Werkhoven wrote:
 Maybe it's just me, but I don't find the way SuSEFW2 does things
 simple at all.
 For a 'set and forget' network it probably works, but for a network
 with rules that are subject to change weekly, if not daily, this file
 is just too unreadable, because of all the comments lines that
 clutter the content.
   
We are all different.  Those comments are one of the main reasons I was
able to get it working when I first started with 6.4.  The docs, etc
were less than helpful, but the comments in the config file were (are)
fantastic, and for me explain each setting in a way that I was and am
able to work with it.  To see you call those clutter shows me how
different we all are.

-- 
Joe Morris
Registered Linux user 231871 running openSUSE 10.2 x86_64





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Re: [opensuse] simple firewall scripts

2007-07-28 Thread Joseph Loo
joe wrote:
 
 Joseph Loo wrote:
 Sloan wrote:
 Theo v. Werkhoven wrote:
 Fri, 27 Jul 2007, by [EMAIL PROTECTED]:

   
 I plan to look at shorewall but thought I'd just ask here for
 recommendations.
 
 Look no further.
   
 I personally prefer the basic linux firewall module that comes with
 webmin. I found it very easy to understand, and easier to implement
 exactly the rules I wanted than with the suse firewall.

 YMMV

 Joe
 Have yu looked at firestarter?
 
 I remember looking at it a few years ago - maybe time to revisit it. Do you
 have good experiences with it?
 
 Joe
Instead of writing the rules manually, this was the only way I could get fedora
7 to do an nfs share.

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Re: [opensuse] simple firewall scripts

2007-07-27 Thread Theo v. Werkhoven
Fri, 27 Jul 2007, by [EMAIL PROTECTED]:

 I plan to look at shorewall but thought I'd just ask here for
 recommendations.

Look no further.

Theo
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Re: [opensuse] simple firewall scripts

2007-07-27 Thread Sloan
Theo v. Werkhoven wrote:
 Fri, 27 Jul 2007, by [EMAIL PROTECTED]:

   
 I plan to look at shorewall but thought I'd just ask here for
 recommendations.
 

 Look no further.
   

I personally prefer the basic linux firewall module that comes with
webmin. I found it very easy to understand, and easier to implement
exactly the rules I wanted than with the suse firewall.

YMMV

Joe
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Re: [opensuse] simple firewall scripts

2007-07-27 Thread Rui Santos
Wolfgang Rosenauer wrote:
 Hi,
 
Hi,

 for smaller installations (using a Linux gateway) I used to use
 SuSEfirewall2 which basically has everything I needed so far.
 
 Now I'd something for another usecase:
 An old Linux gateway (with SuSEfirewall) got a hardware gateway in front
 of it now which blocks traffic from outside. So there is no need anymore
 to do extensive filtering and also masquerading on the old gateway while
 it's still there as kind of second stage hiding the internal network
 behind it.
 Now I still need to control which traffic is allowed from the inside to
 the internet which was done via FW_MASQ_NETS in SF2.
 Since I want to get rid of a second masquerading, SuSEfirewall has no
 mechanism to control this traffic anymore.
 
 Now I could write all iptables rules on my own (which is possible but
 I'm kind of lazy in that case) but I wonder if there is no other simple
 iptables generator outside which does it already.
 
 I plan to look at shorewall but thought I'd just ask here for
 recommendations.
Also try Firewall Builder at http://www.fwbuilder.org/
Since the v2.1.12 version, is able to import your existing iptables
configurations, witch is a nice thing to upgrade your existing machines
as well. Also has an excellent GUI.


 
 Thanks,
  Wolfgang

-- 
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http://www.ruisantos.com/

Veni, vidi, Linux!
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Re: [opensuse] simple firewall scripts

2007-07-27 Thread Sloan
Rui Santos wrote:
 Also try Firewall Builder at http://www.fwbuilder.org/
 Since the v2.1.12 version, is able to import your existing iptables
 configurations, witch is a nice thing to upgrade your existing machines
 as well. Also has an excellent GUI.
   

Good to hear that - that was the one thing that turned me off to
fwbuilder - if it can now import existing iptables configs, that removes
it from the category of non-starter for me.

Joe
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Re: [opensuse] simple firewall scripts

2007-07-27 Thread Joseph Loo
Sloan wrote:
 Theo v. Werkhoven wrote:
 Fri, 27 Jul 2007, by [EMAIL PROTECTED]:

   
 I plan to look at shorewall but thought I'd just ask here for
 recommendations.
 
 Look no further.
   
 
 I personally prefer the basic linux firewall module that comes with
 webmin. I found it very easy to understand, and easier to implement
 exactly the rules I wanted than with the suse firewall.
 
 YMMV
 
 Joe
Have yu looked at firestarter?

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Re: [opensuse] simple firewall scripts

2007-07-27 Thread joe


Joseph Loo wrote:
 Sloan wrote:
 Theo v. Werkhoven wrote:
 Fri, 27 Jul 2007, by [EMAIL PROTECTED]:

   
 I plan to look at shorewall but thought I'd just ask here for
 recommendations.
 
 Look no further.
   
 I personally prefer the basic linux firewall module that comes with
 webmin. I found it very easy to understand, and easier to implement
 exactly the rules I wanted than with the suse firewall.

 YMMV

 Joe
 Have yu looked at firestarter?

I remember looking at it a few years ago - maybe time to revisit it. Do you
have good experiences with it?

Joe
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