On Thu, Sep 21, 2006 at 10:50:11AM -0700, Sanjam Garg wrote: > thanks a lot. > > Your assumption on bridging was correct...but the fact is that i > cant use sniffing to make a guess as my system has constraints laid > down by the intentions of the user who may use some packet source > IP spoofing to mislead dom0.if thats all that can be done then i > would need to do something more rigrous... When using bridging the network security concerns are pretty much exactly the same for those of a bare metal machine - the whole point of bridging is that the guest is connecting directly to the LAN as any physical machine would. Thus if you don't trust the admin of the DomU then don't let them connect straight to the network. For example, you can switch Xen to an alternative networking config where DomU's have to be forwarded & NAT'd using IPTables to get LAN access. If you really want to use bridging I guess you could try filtering out any traffic from the DomU's particular vif which has an unexpected source IP address, but really best bet is to go for NAT & remove their direct access Dan. -- |=- Red Hat, Engineering, Emerging Technologies, Boston. +1 978 392 2496 -=| |=- Perl modules: http://search.cpan.org/~danberr/ -=| |=- Projects: http://freshmeat.net/~danielpb/ -=| |=- GnuPG: 7D3B9505 F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 -=| -- Fedora-xen mailing list Fedora-xen@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-xen
