On Mon, Apr 30, 2012 at 2:00 PM, Eric Bélanger <[email protected]> wrote: > On Mon, Apr 30, 2012 at 8:34 AM, Dan McGee <[email protected]> wrote: >> On Sat, Apr 28, 2012 at 8:01 PM, Eric Bélanger <[email protected]> >> wrote: >>> >>> Here's a tentative sysctl.conf : https://dev.archlinux.org/~eric/sysctl.conf >>> that I obtained with the help of Jan and Dave on IRC. The unusefull >>> stuff from the upstream config have been dropped and the rest has been >>> commented out. I've also cleaned the syntax. >> >> >> I'd change this comment to at least drop the silly ascii smiley face: >> # makes you vulnerable or not :-) >> and try to elaborate more, e.g. >> # if not functioning as a router, there is no need to accept >> redirects or source routes >> >> And maybe add the corresponding ipv6 settings too, since this is 2012. > > Sure. I also got an email from a user who suggested to remove them > (the accept_redirects and source_route) as well as the forwarding as > they are are turned off by default. What do you think about that? I > think we can keep them. The old procps sysctl.conf has the forward > option and the redirect is probably a common option too.
My kernel says otherwise about accept_redirects, at least: dmcgee@galway ~ $ sudo sysctl -a | grep all.accept_redirects net.ipv4.conf.all.accept_redirects = 1 net.ipv6.conf.all.accept_redirects = 1 dmcgee@galway ~ $ sudo sysctl -a | grep all.accept_source_route net.ipv4.conf.all.accept_source_route = 0 net.ipv6.conf.all.accept_source_route = 0
