From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Ralf Braga" Subject: to understand --tcp-flags Date: Sat, 31 May 2003 19:10:58 -0300 (BRT) Sender: netfilter-admin@lists.netfilter.org Message-ID: <36427.200.204.151.150.1054419058.squirrel@webmail.4linux.com.br> References: <20030531140137.C16012@jmhowell.com> Reply-To: ralf@4linux.com.br Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <20030531140137.C16012@jmhowell.com> Errors-To: netfilter-admin@lists.netfilter.org List-Help: List-Post: List-Subscribe: , List-Id: List-Unsubscribe: , List-Archive: Content-Type: text/plain; charset="iso-8859-1" To: netfilter@lists.netfilter.org Hi, I dont understand this command: iptables -A INPUT -p tcp --tcp-flags SYN,ACK SYN,ACK \ -m state --state NEW -j REJECT --reject-with tcp-reset Because two times is used --tcp-flags SYN,ACK SYN,ACK ? This example will be bloqued packages for flags syn and ack ? Thanks, __________________________ Ralf Braga CIO Fone:55-0xx11-3889-0108 Fax: 55-0xx11-3889-0108 www.4linux.com.br ralf@4linux.com.br ___________________________ A SUA INTELIG=CANCIA EM LINUX