2015-09-16 13:06 GMT+02:00 Florian Westphal <f...@strlen.de>: > > Matteo Croce <mat...@openwrt.org> wrote: > > Add option to disable any reply not related to a listening socket, > > like RST/ACK for TCP and ICMP Port-Unreachable for UDP. > > Also disables ICMP replies to echo request and timestamp. > > The stealth mode can be enabled selectively for a single interface. > > I think it would make more sense to extend the socket match > in xtables if it can't be used to achive this already. > > seems like > *filter > :INPUT ACCEPT [0:0] > -A INPUT -p tcp -m socket --nowildcard -j ACCEPT > -A INPUT -p tcp -j DROP > COMMIT > > Already does what you want for tcp, udp should work too. > I'd much rather see xtables and/or nftables to be extended > with whatever feature(s) are needed to configure such a policy > rather than pushing this into the core network stack.
The point is to do the filtering without *tables at all, like /proc/sys/net/ipv4/icmp_echo_ignore_all does for pings -- Matteo Croce OpenWrt Developer _______ ________ __ | |.-----.-----.-----.| | | |.----.| |_ | - || _ | -__| || | | || _|| _| |_______|| __|_____|__|__||________||__| |____| |__| W I R E L E S S F R E E D O M ----------------------------------------------------- CHAOS CALMER ----------------------------------------------------- * 1 1/2 oz Gin Shake with a glassful * 1/4 oz Triple Sec of broken ice and pour * 3/4 oz Lime Juice unstrained into a goblet. * 1 1/2 oz Orange Juice * 1 tsp. Grenadine Syrup ----------------------------------------------------- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/