Craig Cameron wrote: > For x in lo eth0 eth1 > Do > Echo 1 > /proc/sys/net/ipv4/${x}/rp_filter > Done Since you say you're a newbie, I'd better point out: that won't do anything at all. Ever. Unix commands are case sensitive, and "For" and "for" are totally different. There should not have been any capitals in that snippet at all. I notice that your e-mail program is Outlook, which can be too clever for its own good. But you ought to be aware of that, too, in case you ever try to retrieve shell code from an old e-mail. Hope this helps, James. -- E-mail address: james | Legacy (adj): @westexe.demon.co.uk | an uncomplimentary computer-industry epithet that | means 'it works'. | -- Anthony DeBoer