Linux Netfilter discussions
 help / color / mirror / Atom feed
From: "Ralf Braga" <ralf@4linux.com.br>
To: netfilter@lists.netfilter.org
Subject: to understand --tcp-flags
Date: Sat, 31 May 2003 19:10:53 -0300 (BRT)	[thread overview]
Message-ID: <36426.200.204.151.150.1054419053.squirrel@webmail.4linux.com.br> (raw)
In-Reply-To: <20030531140137.C16012@jmhowell.com>

Hi,

I dont understande 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 INTELIGÊNCIA EM LINUX




  reply	other threads:[~2003-05-31 22:10 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-05-31 20:01 firewall whoes Jerry M. Howell II
2003-05-31 22:10 ` Ralf Braga [this message]
2003-05-31 22:10 ` to understand --tcp-flags Ralf Braga
2003-05-31 23:48   ` Michael K

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=36426.200.204.151.150.1054419053.squirrel@webmail.4linux.com.br \
    --to=ralf@4linux.com.br \
    --cc=netfilter@lists.netfilter.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox