From: Alexandru Dragoi <alex@zoomnet.ro>
To: lartc@vger.kernel.org
Subject: Re: [LARTC] Delay when changing DNAT rules
Date: Sun, 19 Mar 2006 15:29:02 +0000 [thread overview]
Message-ID: <441D78BE.5040303@zoomnet.ro> (raw)
In-Reply-To: <20060319151301.3kb89cl94wc4gso4@www.simplelists.com>
Andrew Beverley wrote:
>Whenever I add or remove a DNAT rule such as:
>
>iptables -A PREROUTING -p tcp --dport 80 -j DNAT --to-destination 192.168.0.1
>
>there is sometimes a delay before the correct nat'ing is done. Can anyone tell
>me why this is? Is it something to do with caching of routing tables? If so, is
>there a way to clear them to ensure that the rule takes effect immediately?
>
>I am building a simple captive portal solution for my network. By default people
>are directed to the local web server as per the rule above, and once logged in
>they are allowed access to the web. When logging in the user is directed to
>their choice of webpage, but this is often not displayed and instead the
>connection is routed once again to the local web server as above. Even deleting
>the DNAT rule altogether seems to sometimes take a while to update.
>
>Andy
>_______________________________________________
>LARTC mailing list
>LARTC@mailman.ds9a.nl
>http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc
>
>
You can try to disable KeepAlive from your apache server.
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prev parent reply other threads:[~2006-03-19 15:29 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-19 15:13 [LARTC] Delay when changing DNAT rules Andrew Beverley
2006-03-19 15:29 ` Alexandru Dragoi [this message]
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