At 04:35 25-07-2007, Howard Jones wrote:
A colleague is working with a Samba installation where Windows clients
are accessing the server over a VPN. They are seeing an issue where a
share is visible, but if a directory contains more than 8 files, they
get an error.
The VPN is set to allow everything in both directions. Windows->Window
sharing does work OK across the link, as do other large file transfers
(NFS, FTP). The Samba connections work OK locally, and if the firewalls
are replaced with a router (the two 'sites' were original local for
When you put in a router, you are taking the VPN out of the picture.
testing), then the problem goes away. However, the firewall policy
doesn't limit anything (and wouldn't it break Windows too?)
Does that mean that the firewalls are turned off? The effects of the
firewall policy may only be noticeable under certain circumstances
like that one you described about. Verify the firewall logs to see
whether anything gets blocked.
Does this ring any bells with anyone? The firewalls are Juniper
Netscreens at both ends, for what it's worth. I've had a google around,
and I can't see anything related to packet size or MTUs, which is what
it smells like to me... (presumably the 9th filename ends up in a second
packet, or a certain sized response).
That sounds like a MTU related issue. The traffic get encapsulated
as it goes over the VPN and you may see packet fragmentation.
Regards,
-sm
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