[HostAP] Re: HotMail Not Working..

Yanghwee Tan tanyh at bii.a-star.edu.sg
Wed Feb 5 02:12:38 EST 2003


in addition on the MTU size, which is a possible cause.
here's useful MTU info i clipped from RP-PPPoE docs,
(http://www.roaringpenguin.com/pppoe/how-to-connect.txt)

>8. Configure LAN Hosts
>----------------------
>
>If you have a LAN behind the firewall, you have to lower the TCP
>maximum segment size from the normal 1460 to 1452 (or better, 1412.)
>You have two options: Either set the MTU of all the interfaces on
>other hosts on the LAN to 1452, or use the "-m 1412" option to pppoe.
>The "-m" option for pppoe is far simpler and makes it easier to add
>hosts to the LAN, but consumes some extra CPU time.
>
>If you want to manually configure the LAN hosts, here's how:
>
>In Linux, use: "ifconfig eth0 mtu 1452".  For best results, put this
>in an /etc/rc.d/rc.local script.
>
>For Windows, machines, see http://lan.cns.ksu.edu/OS/WIN95/slip95.htm.
>Set the MaxMTU to 1452.


Have fun!
---
cheers,
yanghwee


On Wed, 5 Feb 2003, Yanghwee Tan wrote:

>
> Yea tat's possible caused for Matthew's cafe!
>
> i've read about toggling on TCP Explicit Congestion
> Notification (ecn) boolean settings affects surfing
> to some sites.
>
> Btw, to permanent set this value on boot you can
> do this, edit /etc/sysctl.conf and set:
>
>    net.ipv4.tcp_ecn = 0
>
>
> ---
> cheers,
> Yanghwee.
>
>
> On Tue, 4 Feb 2003, Francois Gurin wrote:
>
> >
> > also check to see if you have ecn enabled in your kenrnel
> > and disable it if you do:
> >
> > $ cat /proc/sys/net/ipv4/tcp_ecn
> > 1
> > $ echo 0 > cat /proc/sys/net/ipv4/tcp_ecn
> >
> > -francois
> >
> >
> > On Tue, Feb 04, 2003 at 02:45:24PM +0800, Yanghwee Tan wrote:
> > >
> > > Matthew,
> > >
> > > hostap is a driver, it doesn't block network services,
> > > or any particularly websites! :)
> > >
> > > it could be the dns service or proxy service that's doing
> > > the filtering, perhaps u could check that out?
> > > also u may wana find out more from your ISP?
> > >
> > >
> > > cheers,
> > > Yanghwee.
> > >
> > >
> > > On Mon, 3 Feb 2003, Matthew Tedder wrote:
> > >
> > > >
> > > > I'm running an Open Source Cafe and tried offering wireless via HostAP--it set
> > > > up easily but cannot access some particular websites such as:
> > > >
> > > > hotmail
> > > > slashdot
> > > > and a friends home server (running FreeBSD)
> > > >
> > > > I am using the latest Red Hat.  I've lost a few customers to the coffee shop
> > > > down the street as a result of this--HotMail is CRUCIAL.  Does anyone have
> > > > any idea what might be going on?
> > > >
> > > > I'm using a DWL 520 card.
> > > >
> > > > Any useful information would be greatly appreciated.
> > > >
> > > > --
> > > > Matthew C. Tedder
> > > > SimpFlex Technologies, Inc.
> > > > _______________________________________________
> > > > HostAP mailing list
> > > > HostAP at shmoo.com
> > > > http://lists.shmoo.com/mailman/listinfo/hostap
> > > >
> > >
> > >
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