Multiple Platform remote CPU load issue in Samba 1.x and 2.x

David Collier-Brown David.Collier-Brown at canada.sun.com
Wed Jun 14 16:36:44 GMT 2000


"Christopher R. Hertel" wrote:
> 
> >       My preferred action on getting an attack is
> >               a) warn the sysadmin via mail
> >               b) stall the TCP session
> 
> It's not just TCP.  nmbd displays the same behavior when I fling large
> numbers of zero'd packets at it.  Under UDP, the goal is to fling the
> packet to the floor with as little effort as possible.
> 
> You can send back the appropriate ICMP to signal that the connection is
> closed or the port is unreachable or some such.

	You want to reply host or perhaps network unreachable 
	if you're fighting off an attack.

	In a previous life, I once had to return router redirects.
	Perhaps a bit too cruel unless you **know** the chap at the
	other end is named Beelzebub...

--dave
-- 
David Collier-Brown,  | Always do right. This will gratify some people
185 Ellerslie Ave.,   | and astonish the rest.        -- Mark Twain
Willowdale, Ontario   | //www.oreilly.com/catalog/samba/author.html
Work: (905) 415-2849 Home: (416) 223-8968 Email: davecb at canada.sun.com


More information about the samba-technical mailing list