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Diffstat (limited to 'extensions/libipt_ULOG.man')
| -rw-r--r-- | extensions/libipt_ULOG.man | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/extensions/libipt_ULOG.man b/extensions/libipt_ULOG.man new file mode 100644 index 0000000..649b6e3 --- /dev/null +++ b/extensions/libipt_ULOG.man @@ -0,0 +1,27 @@ +This target provides userspace logging of matching packets. When this +target is set for a rule, the Linux kernel will multicast this packet +through a +.IR netlink +socket. One or more userspace processes may then subscribe to various +multicast groups and receive the packets. +Like LOG, this is a "non-terminating target", i.e. rule traversal +continues at the next rule. +.TP +\fB\-\-ulog\-nlgroup\fP \fInlgroup\fP +This specifies the netlink group (1-32) to which the packet is sent. +Default value is 1. +.TP +\fB\-\-ulog\-prefix\fP \fIprefix\fP +Prefix log messages with the specified prefix; up to 32 characters +long, and useful for distinguishing messages in the logs. +.TP +\fB\-\-ulog\-cprange\fP \fIsize\fP +Number of bytes to be copied to userspace. A value of 0 always copies +the entire packet, regardless of its size. Default is 0. +.TP +\fB\-\-ulog\-qthreshold\fP \fIsize\fP +Number of packet to queue inside kernel. Setting this value to, e.g. 10 +accumulates ten packets inside the kernel and transmits them as one +netlink multipart message to userspace. Default is 1 (for backwards +compatibility). +.br |