Re: AW: [leaf-user] Update: Short term LEAF project goals

2003-02-18 Thread Frank Tegtmeyer
"Alex Rhomberg" <[EMAIL PROTECTED]> writes:

> This is a good place to advertise my work: I have written a bunch of
> scripts

Could you add a link please?

Regards, Frank


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Re: [leaf-user] dns dies?

2003-07-03 Thread Frank Tegtmeyer
Raymond Page <[EMAIL PROTECTED]> writes:

> ability to dns lookups from my Bering box.  It can ping nameservers, however 
> the lookup seems to have died.  Any ideas why?

The first bet is always that the generated logs are not taken by the
responsible processes. If that occurs, dnscache will stop resolving.

If you don't run dnscache under daemontools, try this. The multilog
process will never fill the disk if configured correctly.

Regards, Frank


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[leaf-user] unclean W2k packets (445)

2003-07-24 Thread Frank Tegtmeyer
Hi,

I set "dropunclean" on an interface that W2k clients use as gateway to
another location (system is Bering 1.2).
After checking the logs I found some dropped (unclean) tcp packets that were
sent to port 445 of a W2k server. Its not a big deal because NetBT is
still available (port 139) but I wonder if its standard behaviour of
W2k to send packages that netfilter sees as unclean.

Did someone see this happen too? Before I add tcpdump to Bering, has
anybody seen what is unclean in these packages?

Regards, Frank


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Re: [leaf-user] unclean W2k packets (445)

2003-07-24 Thread Frank Tegtmeyer
Tom Eastep <[EMAIL PROTECTED]> writes:

> I strongly recommend *against* using that option on a production router.

Because its experimental status or are there any other reasons?

Regards, Frank


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Re: [leaf-user] unclean W2k packets (445)

2003-07-24 Thread Frank Tegtmeyer
Tom Eastep <[EMAIL PROTECTED]> writes:

> Because there are simply too many TCP stacks out there with minor
> problems that you are effectively blacklisting if you use this option.

Ok, that's true for the average case. I had this very special network
in mind that is W2k only. Anyway - because there seem to be problems
too I will remove the option.

Thanks for your answers!

Frank


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Re: [leaf-user] Shorewall common.def in Bering 1.2

2003-08-14 Thread Frank Tegtmeyer
Tom Eastep <[EMAIL PROTECTED]> writes:

> you don't like it, create /etc/shorewall/common and put the rules that
> YOU like in it.

I did this - my question was about why these defaults are used. I
suspect it's only a matter of personal preferences. But maybe I miss
some obvious reason - I would like to learn about this then.

Regards, Frank


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Re: [leaf-user] Shorewall common.def in Bering 1.2

2003-08-14 Thread Frank Tegtmeyer
Frank Tegtmeyer <[EMAIL PROTECTED]> writes:

> I interpreted Windows traffic coming from the Internet ...

I think I see my mistake - common.def is applied to all traffic on all
interfaces (if not handled by rules).
So the reject is choosen to be friendly to internal users, right?

Regards, Frank


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[leaf-user] Shorewall common.def in Bering 1.2

2003-08-14 Thread Frank Tegtmeyer
Hi,

is there any reason that the Windows ports in common.def are set to
reject instead of DROP?
I like to slow scanners down if possible, so DROP would be the natural
choice.
The only ports where I use reject are ident (to be friendly) and some
annoying P2P ports (to get them stopped faster).

Regards, Frank


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Re: [leaf-user] Shorewall common.def in Bering 1.2

2003-08-14 Thread Frank Tegtmeyer
Julian Church <[EMAIL PROTECTED]> writes:

> Since the packets you're seeing are pretty much exclusively harmless
> "chatter" it's more user friendly this way.

You mean Windows users using the Internet as "network neighborhood"?
I'm not too familiar with Windows hosts connected to the Internet
through modem/isdn/dsl/..., so what you say may be correct.

I interpreted Windows traffic coming from the Internet as part of a scan
always. So there would be no need to be friendly. If this traffic is
generated by accident in most cases the default of rejecting would be
justified.

Regards, Frank


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