> This is what I have seen on my laptop, but it seems that you guys may be
> seeing other behaviour, with the ICMP echo off by default for all
> interfaces. I can't imagine there are different versions of SP2, perhaps it
> takes on certain SP1 features if you previously had it configured?
Perhaps. Every install of SP2 that I've come across has had the
firewall enabled by default on all interfaces, and all flavours of ICMP
blocked.
B.
>
> It would be good if other people can describe what they are seeing as their
> default settings.
>
> Carlos
>
>
>
>
>
>
> -----Original Message-----
> From: Wireless Issues in the JANET community
> [mailto:[log in to unmask]] On Behalf Of Bruce Rodger
> Sent: 16 September 2004 17:14
> To: [log in to unmask]
> Subject: Re: Fwd: XP SP2 and non-broadcast SSIDs
>
> This is nothing to do with SSIDs, but is related to SP2...
>
> We have been having some issues with machines running SP2 connecting via
> bluesocket. (maybe Carlos will be able to advise :-)
>
> The machines appear to work normally, but if they are left idle for a
> short period, they get disconnected. Re-launching a browser doesn't
> re-connect - you need to do a dhcp release/renew.
>
> My interpretation is that Bluesocket is continually monitoring whether
> the client is "there" - initially using arp entries. These will be
> there as long as the machine is not idle. Don't know what the arp timeout
> is, but it appears to be a small number of minutes.
>
> If the arp entry for a machine disappears, it can mean that either the
> machine has "gone", or that the machine just isn't sending out any
> traffic. In this situation, the Bluesocket unit will then ping the
> client. It will try 3 times, each a minute apart. If all 3 fails, it
> assumes the client has gone, and logs it out.
>
> The problem is that SP2 enables the firewall. By default, this blocks
> ICMP echo, so these pings will always fail.
>
> Enabling icmp echo within the windows firewall resolves the problem. It's
> a pity that this wasn't the default setting....
>
>
> Bruce.
>
>
>
>
>
>
>
> --
> Bruce Rodger [log in to unmask] PGP key
> available
> Network Manager, IT Services
> |http://www.strath.ac.uk/IT/People/bruce.html
> The University of Strathclyde | +44 (0)141 548 3300
> Glasgow G4 0LN, Scotland. | Fax 553 4100
>
--
Bruce Rodger [log in to unmask] PGP key available
Network Manager, IT Services |http://www.strath.ac.uk/IT/People/bruce.html
The University of Strathclyde | +44 (0)141 548 3300
Glasgow G4 0LN, Scotland. | Fax 553 4100
|