From 6f672c09545b730a8763b42bf5418463f6ae2679 Mon Sep 17 00:00:00 2001
From: Ben Lindstrom <mouring@eviladmin.org>
Date: Wed, 12 Sep 2001 17:51:55 +0000
Subject: [PATCH]    - stevesk@cvs.openbsd.org 2001/08/29 23:02:21     
 [sshd.8]      add text about -u0 preventing DNS requests; ok markus@

---
 ChangeLog |  5 ++++-
 sshd.8    | 14 +++++++++++++-
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 191e525b6..5316a52f5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -46,6 +46,9 @@
      [scp.c]
      clear the malloc'd buffer, otherwise source() will leak malloc'd 
      memory; ok theo@
+   - stevesk@cvs.openbsd.org 2001/08/29 23:02:21
+     [sshd.8]
+     add text about -u0 preventing DNS requests; ok markus@
 
 20010815
  - (bal) Fixed stray code in readconf.c that went in by mistake.
@@ -6369,4 +6372,4 @@
  - Wrote replacements for strlcpy and mkdtemp
  - Released 1.0pre1
 
-$Id: ChangeLog,v 1.1498 2001/09/12 17:49:48 mouring Exp $
+$Id: ChangeLog,v 1.1499 2001/09/12 17:51:55 mouring Exp $
diff --git a/sshd.8 b/sshd.8
index 63720c7d9..e98cfdd61 100644
--- a/sshd.8
+++ b/sshd.8
@@ -34,7 +34,7 @@
 .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 .\"
-.\" $OpenBSD: sshd.8,v 1.143 2001/08/22 16:30:02 stevesk Exp $
+.\" $OpenBSD: sshd.8,v 1.144 2001/08/29 23:02:21 stevesk Exp $
 .Dd September 25, 1999
 .Dt SSHD 8
 .Os
@@ -268,6 +268,18 @@ indicates that only dotted decimal addresses
 should be put into the
 .Pa utmp
 file.
+.Fl u0
+is also be used to prevent
+.Nm
+from making DNS requests unless the authentication
+mechanism or configuration requires it.
+Authentication mechanisms that may require DNS include
+.Cm RhostsAuthentication ,
+.Cm RhostsRSAAuthentication ,
+.Cm HostbasedAuthentication
+and using a
+.Cm from="pattern-list"
+option in a key file.
 .It Fl D
 When this option is specified
 .Nm