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From: "K.A.Rochstad" <karochstad@broadpark.no>
To: netfilter@lists.netfilter.org
Subject: miscellaneous questions (iptables v1.2.6a)
Date: Wed, 4 Dec 2002 19:35:06 +0100	[thread overview]
Message-ID: <001001c29bc3$ddeb2b60$0200000a@design> (raw)

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Hello.

 

I have 2 questions about this edition of netfilter. (iptables 1.2.6)

 

When I use:

Iptables -A OUTPUT -o $INTERNET -p tcp -s $IPADDR -sport $UNPRIVPORTS -dport 113 -j ACCEPT 

 

I get this error:

Iptables v.1.2.6a: invalid TCP port/service '-d' specified.

Try 'iptables -h' or 'iptables -help' for more information.

 

I get this error in connection to -dport 53 too. (With -p UDP)

 

Q1: 

Is it not possible to make more restrictions between the SOA DNS and a client?

Now I is all protocols allowed all on all ports because -sport and -dport not was permitted in connection to port 53.

 

On the other hand is it no problem to make rules for s local DNS forward Server on port 53.

 

Q2:

How to configure correct rules for these ports?

 

Thank you for your time and advice.

 

Karl

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                 reply	other threads:[~2002-12-04 18:35 UTC|newest]

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