On Thu, 2002-10-03 at 08:10, Mark Stewart wrote:
> 
> Networking gurus, your knowledge is desperately needed...
> 
> I have my Mdk8.2 box setup on our corporate network with a static IP. Call
> it mybox.foo.com. I have a laptop running Win2K that lives on our wireless
> LAN and uses a DHCP-allocated IP and lives in a subnet. Call it
> laptop.dhcp.foo.com. The trouble is that unless I first ping the laptop from
> mybox, I cannot reach mybox from the laptop. More problematically, if I
> leave an ssh connection from the laptop to mybox idle for more than say 5
> minutes the connection dies. If I reboot into Win2K on mybox I don't have to
> ping first to allow the laptop to connect and connections once made continue
> to work for as long as you like. It just works.

Had this problem about 2 years ago with an ALL FreeBSD/Win98 network. 
with 7 mini-lans in different rooms of our office we noticed that boxes
kept dropping off the net... but never the windows ones.  Turned out
that the problem was because FreeBSD and we later found Linux as well
don't keep "chattering" over the net and the Hubs (all switched 10/100
hubs) kept "losing" the boxes.  We'd have to do two way pings to get the
FreeBSD boxes back up every morning...(do a tcpdump sometime when the
network is quite and you'll see your windows boxes chattering away.)  

The solution.  a little script that did 3 pings to the firewall.  Slept
for 15 minutes and then did 3 pings again.  

Not all of the switched hubs did this (the 3coms for example) but some
of the NetGear and lynksys ones did.  

James

> 
> Our LAN admin, who clearly knows much more about Windows, is pointing the
> finger at the OS since he isn't required to support Linux. Our network has a
> bunch of VLANs in it, the details to which I am not privy but if there's
> something that might be relevant I can ask him about it. On the other hand,
> if anyone understands what's going on here that has to do with how I've got
> mybox configured I would really love to know. Just to be clear, I'm not
> running any firewalls or anything, no iptables, ipchains, etc. I am running
> NFS, Samba, ssh, and proftpd.
> 
> Thanks in advance for any and all thoughts,
> 
> ::mark
> 
> 
> ----
> 

> Want to buy your Pack or Services from MandrakeSoft? 
> Go to http://www.mandrakestore.com



Want to buy your Pack or Services from MandrakeSoft? 
Go to http://www.mandrakestore.com

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