Add note about ftplib defaulting to passive mode.
diff --git a/Misc/NEWS b/Misc/NEWS
index 0ccf8ba..2b8e38d 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -97,6 +97,13 @@
Standard library
+- The ftplib module now defaults to passive mode, which is deemed a
+ more useful default given that clients are often inside firewalls
+ these days. Note that this could break if ftplib is used to connect
+ to a *server* that is inside a firewall, from outside; this is
+ expected to be a very rare situation. To fix that, you can call
+ ftp.set_pasv(0).
+
- The module site now treats .pth files not only for path configuration,
but also supports extensions to the initialization code: Lines starting
with import are executed.