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-rw-r--r--share/man/man4/blackhole.415
1 files changed, 8 insertions, 7 deletions
diff --git a/share/man/man4/blackhole.4 b/share/man/man4/blackhole.4
index 7b86682..2005aab 100644
--- a/share/man/man4/blackhole.4
+++ b/share/man/man4/blackhole.4
@@ -12,7 +12,7 @@
.\"
.\"
.\" $FreeBSD$
-.Dd August 17, 1999
+.Dd January 1, 2007
.Dt BLACKHOLE 4
.Os
.Sh NAME
@@ -58,12 +58,11 @@ It could potentially also slow down someone who is attempting a denial
of service attack.
.Sh WARNING
The TCP and UDP blackhole features should not be regarded as a replacement
-for
-.Xr ipfw 8
-as a tool for firewalling a system.
-In order to create a highly secure system,
-.Xr ipfw 8
-should be used for protection, not the blackhole feature.
+for firewall solutions.
+Better security would consist of the
+.Nm
+.Xr sysctl 8
+MIB used in conjuction with one of the available firewall packages.
.Pp
This mechanism is not a substitute for securing a system.
It should be used together with other security mechanisms.
@@ -71,7 +70,9 @@ It should be used together with other security mechanisms.
.Xr ip 4 ,
.Xr tcp 4 ,
.Xr udp 4 ,
+.Xr ipf 8 ,
.Xr ipfw 8 ,
+.Xr pfctl 8 ,
.Xr sysctl 8
.Sh HISTORY
The TCP and UDP
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