I run dozens of VPNs and am very familiar with MTU issues but after several
captures and debugs, I initially ruled an MTU issue out.  No packet was over
~1300 bytes in the capture, no fragmentation...nothing.  But sure enough, as
soon as I adjusted the TCP MSS on my router it started working.

Just goes to show take nothing for granted...

Thanks,

Rik 

-----Original Message-----
From: Guyler, Rik 
Sent: Monday, September 17, 2007 9:54 AM
To: 'm0n0wall at lists dot m0n0 dot ch'
Subject: Captive Portal redirect page size limit???

I have the CP working just fine with a small test redirect page.  I don't
use any authentication so all my users have to do is click the button that
they accept the terms.  However, when I add all the content to my redirect
page (about one full page of text with minor formatting) the redirect always
hangs.

I worked through this little by little and the only thing I found that makes
any sense is that the page has too much text in it.  If I hack it down to a
single small paragraph then it works fine but as soon as I get past that
"magic" number it fails.  This problem exists on both IE7 and Firefox so I
don't believe it's a browser issue.

I'm running 1.3b4.  Does anybody have any idea what might be causing this?
It's going to be a real problem for me if I can't get this working.

TIA,

Rik