diff -up vsftpd-3.0.2/vsftpd.conf.5.docupd vsftpd-3.0.2/vsftpd.conf.5
--- vsftpd-3.0.2/vsftpd.conf.5.docupd	2014-06-05 09:47:27.987876849 +0200
+++ vsftpd-3.0.2/vsftpd.conf.5	2014-06-05 09:47:27.989876848 +0200
@@ -652,6 +652,21 @@ change it with the setting
 .BR xferlog_file .
 
 Default: NO
+.TP
+.B isolate_network
+If enabled, use CLONE_NEWNET to isolate the untrusted processes so that
+they can't do arbitrary connect() and instead have to ask the privileged
+process for sockets (
+.BR port_promiscuous 
+have to be disabled).
+
+Default: YES
+.TP
+.B isolate
+If enabled, use CLONE_NEWPID and CLONE_NEWIPC to isolate processes to their
+ipc and pid namespaces. So separated processes can not interact with each other.
+
+Default: YES
 
 .SH NUMERIC OPTIONS
 Below is a list of numeric options. A numeric option must be set to a non
@@ -749,8 +764,9 @@ Default: 077
 .B max_clients
 If vsftpd is in standalone mode, this is the maximum number of clients which
 may be connected. Any additional clients connecting will get an error message.
+The value 0 switches off the limit.
 
-Default: 0 (unlimited)
+Default: 2000
 .TP
 .B max_login_fails
 After this many login failures, the session is killed.
@@ -760,9 +776,9 @@ Default: 3
 .B max_per_ip
 If vsftpd is in standalone mode, this is the maximum number of clients which
 may be connected from the same source internet address. A client will get an
-error message if they go over this limit.
+error message if they go over this limit. The value 0 switches off the limit.
 
-Default: 0 (unlimited)
+Default: 50
 .TP
 .B pasv_max_port
 The maximum port to allocate for PASV style data connections. Can be used to