Re: RE: RE: [JunkMail] IPF & DHCP request

2003-08-18 Thread Mike Maltese
x.x.x.x/32 isn't supposed to be your IP, it's your ISP's DHCP server
address. Find that out from your ISP and insert it there. What I did was set
it to "from any to any", then checked dhclient.leases to find out what
server was giving my my information.

- Original Message - 
From: "geek" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Monday, August 18, 2003 10:05 AM
Subject: RE: RE: RE: [JunkMail] IPF & DHCP request


That's not the point, the dhcp works, what doesnt work is the ipf.rules
(don't let the DHCP work), and i dont have internet anyway, my question was
in this line:

> #
> # Allow bootp traffic in from your ISP's DHCP server only.
> #
> pass in quick on ed0 proto udp from X.X.X.X/32 to any port = 68 keep state

i change X.X.X.X/32 for what?! if i dont have a "stable" IP!?
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Re: [JunkMail] IPF & DHCP request

2003-08-18 Thread Lowell Gilbert
"geek" <[EMAIL PROTECTED]> writes:

> That's not the point, the dhcp works, what doesnt work is the ipf.rules (don't let 
> the DHCP work), and i dont have internet anyway, my question was in this line:
> 
> > #
> > # Allow bootp traffic in from your ISP's DHCP server only.
> > #
> > pass in quick on ed0 proto udp from X.X.X.X/32 to any port = 68 keep state
> 
> i change X.X.X.X/32 for what?! if i dont have a "stable" IP!?

It doesn't matter.  The keyword "from" means that X.X.X.X/32 is
supposed to be the *other* machine's address (the server).
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Re: [JunkMail] RE: RE: [JunkMail] IPF & DHCP request

2003-08-18 Thread Mark Woodson
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Hash: SHA1

On Sunday 17 August 2003 05:05 pm, geek wrote:
> i read it already, but i have a problem with it
>
> #
> # Allow bootp traffic in from your ISP's DHCP server only.
> #
> pass in quick on ed0 proto udp from X.X.X.X/32 to any port = 68 keep state
>
> My IP changes every time i reboot the machine, how i can make this works ?!

The from (ed0 is the external interface in the example) is the address of your 
ISP's DHCP server.  replace X.X.X.X with any unless you want to try and 
figure out the DHCP server's IP address.

So the line above should read

pass in quick on ed0 proto udp from any to any port = 68 keep state

This is less secure than is ideal since it would allow a theoretical attack on 
your dhclient, but should work.

- -Mark
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RE: RE: RE: [JunkMail] IPF & DHCP request

2003-08-18 Thread geek
That's not the point, the dhcp works, what doesnt work is the ipf.rules (don't let the 
DHCP work), and i dont have internet anyway, my question was in this line:

> #
> # Allow bootp traffic in from your ISP's DHCP server only.
> #
> pass in quick on ed0 proto udp from X.X.X.X/32 to any port = 68 keep state

i change X.X.X.X/32 for what?! if i dont have a "stable" IP!?
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RE: RE: [JunkMail] IPF & DHCP request

2003-08-18 Thread Charlie Schluting
On Mon, 18 Aug 2003, geek wrote:

> i read it already, but i have a problem with it
>
> #
> # Allow bootp traffic in from your ISP's DHCP server only.
> #
> pass in quick on ed0 proto udp from X.X.X.X/32 to any port = 68 keep state
>
> My IP changes every time i reboot the machine, how i can make this works ?!

If your IP is changing, then you ARE able to DHCP. In other words, it
does "works."

-Charlie
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RE: RE: [JunkMail] IPF & DHCP request

2003-08-17 Thread geek

i read it already, but i have a problem with it

#
# Allow bootp traffic in from your ISP's DHCP server only. 
#
pass in quick on ed0 proto udp from X.X.X.X/32 to any port = 68 keep state

My IP changes every time i reboot the machine, how i can make this works ?!
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Re: [JunkMail] IPF & DHCP request

2003-08-17 Thread Mark Woodson
At 09:29 PM 8/17/2003 +0100, geek wrote:
Hey guys, can u please post (who have) rules with DHCP involved?! because, 
i'm in troube, my firewall doesnt work because because my ipf.rules doesnt 
work and i dont know why!!

When i put in rules "pass in/out all" i have acess to the internet, 
otherwise, with my rules i dont, and i have change them so many times, and 
they didnt work anyway, if anyone can help me:

block in log all
block out log all
This should be at the end.  It's organizationally easiest if you break it 
up into by interface.  I think is overly restrictive additionally.

pass in quick on lo0 all
pass out quick on lo0 all
pass in quick on ep0 all
pass out quick on ep0 all
#Allow internal traffic to outside world
pass out quick on ep1 proto tcp all keep state
pass out quick on ep1 proto udp all keep stateuic
pass out quick on ep1 proto icmp all keep state
#Allow traffic from outside
#DNS
pass in quick on ep1 proto udp from any to any port = 53 keep state
this really isn't necessary.  You've allowed responses to queries by the 
pass out on the interface above.

#DHC# [dhclient]
pass in quick on ep1 proto udp from any to any port = 68 keep state keep 
fragsP
keep frags is really unnecessary.

I'd recommend the howto at this address.

http://www.schlacter.net/public/FreeBSD-STABLE_and_IPFILTER.html

-Mark 

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