From: Mark Wooding <mdw@distorted.org.uk>
Date: Fri, 30 Mar 2012 16:30:42 +0000 (+0100)
Subject: fender.m4: Define an address to be a guaranteed black hole.
X-Git-Url: https://git.distorted.org.uk/~mdw/firewall/commitdiff_plain/e35b80fab10d6e608bebd11c55a0bc1a13696245

fender.m4: Define an address to be a guaranteed black hole.
---

diff --git a/fender.m4 b/fender.m4
index a6c7362..c8b2ee7 100644
--- a/fender.m4
+++ b/fender.m4
@@ -33,5 +33,9 @@ allowservices inbound tcp \
 ## We have to provide NTP service.  The guests sync to our clock.
 ntpclient inbound $ntp_servers
 
+## Guaranteed black hole.  Put this at the very front of the chain.
+run iptables -I INPUT -d 212.13.198.78 -j DROP
+run ip6tables -I INPUT -d 2001:ba8:0:1d9::ffff -j DROP
+
 m4_divert(-1)
 ###----- That's all, folks --------------------------------------------------