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diff --git a/vsftpd.conf.5 b/vsftpd.conf.5
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index 10e9f45..cf1ae34 100644
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--- a/vsftpd.conf.5
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+++ b/vsftpd.conf.5
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@@ -653,6 +653,21 @@ change it with the setting
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 .BR xferlog_file .
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 Default: NO
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+.TP
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+.B isolate_network
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+If enabled, use CLONE_NEWNET to isolate the untrusted processes so that
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+they can't do arbitrary connect() and instead have to ask the privileged
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+process for sockets (
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+.BR port_promiscuous
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+have to be disabled).
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+
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+Default: YES
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+.TP
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+.B isolate
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+If enabled, use CLONE_NEWPID and CLONE_NEWIPC to isolate processes to their
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+ipc and pid namespaces. So separated processes can not interact with each other.
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+
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+Default: YES
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 .SH NUMERIC OPTIONS
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 Below is a list of numeric options. A numeric option must be set to a non
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@@ -750,8 +765,9 @@ Default: 077
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 .B max_clients
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 If vsftpd is in standalone mode, this is the maximum number of clients which
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 may be connected. Any additional clients connecting will get an error message.
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+The value 0 switches off the limit.
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-Default: 0 (unlimited)
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+Default: 2000
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 .TP
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 .B max_login_fails
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 After this many login failures, the session is killed.
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@@ -761,9 +777,9 @@ Default: 3
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 .B max_per_ip
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 If vsftpd is in standalone mode, this is the maximum number of clients which
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 may be connected from the same source internet address. A client will get an
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-error message if they go over this limit.
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+error message if they go over this limit. The value 0 switches off the limit.
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-Default: 0 (unlimited)
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+Default: 50
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 .TP
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 .B pasv_max_port
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 The maximum port to allocate for PASV style data connections. Can be used to