
D-18 iptables man Pages
LX Series Configuration Guide
This target is used to modify the time to live field in
the IP header. It is only valid in the mangle table.
--ttl-set ttl
Set the TTL to the given value.
--ttl-dec ttl
Decrement the TTL by the given value.
--ttl-inc ttl
Increment the TTL by the given value.
ULOG
This target provides userspace logging of matching pack
ets. When this target is set for a rule, the Linux kernel
will multicast this packet through a netlink socket. One
or more userspace processes may then subscribe to various
multicast groups and receive the packets.
--ulog-nlgroup <nlgroup>
This specifies the netlink group (1-32) to which
the packet is sent. Default value is 1.
--ulog-prefix <prefix>
Prefix log messages with the specified prefix; up
to 32 characters long, and useful fro distinguish
ing messages in the logs.
--ulog-cprange <size>
Number of bytes to be copied to userspace. A value
of 0 always copies the entire packet, regardless of
its size. Default is 0
--ulog-qthreshold <size>
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
multpart message to userspace. Default is 1 (for
backwards compatibility)
Commentaires sur ces manuels