diff options
author | Florian Westphal <fw@strlen.de> | 2012-09-17 00:23:08 +0000 |
---|---|---|
committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2012-09-30 14:54:26 +0200 |
commit | 8d8896a3833292d091ee5a028f3461083bb956bd (patch) | |
tree | f0c40fa2e90052092773c6afa9ede957ad0dbb7d /extensions/libxt_time.man | |
parent | 1871796877956ee68a39092c6fc3678e5a9d1d88 (diff) |
libxt_time: add support to ignore day transition
Currently, if you want to do something like:
"match Monday, starting 23:00, for two hours"
You need two rules, one for Mon 23:00 to 0:00 and one for Tue 0:00-1:00.
The rule
--weekdays Mo --timestart 23:00 --timestop 01:00
looks correct, but it will first match on monday from midnight to 1 a.m.
and then again for another hour from 23:00 onwards.
This permits userspace to explicitly ignore the day transition and
match for a single, continuous time period instead.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'extensions/libxt_time.man')
-rw-r--r-- | extensions/libxt_time.man | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/extensions/libxt_time.man b/extensions/libxt_time.man index 1d677b94..4c0cae06 100644 --- a/extensions/libxt_time.man +++ b/extensions/libxt_time.man @@ -30,6 +30,10 @@ Only match on the given weekdays. Possible values are \fBMon\fP, \fBTue\fP, to \fB7\fP, respectively. You may also use two-character variants (\fBMo\fP, \fBTu\fP, etc.). .TP +\fB\-\-contiguous\fP +When \fB\-\-timestop\fP is smaller than \fB\-\-timestart\fP value, match +this as a single time period instead distinct intervals. See EXAMPLES. +.TP \fB\-\-kerneltz\fP Use the kernel timezone instead of UTC to determine whether a packet meets the time regulations. @@ -84,3 +88,11 @@ The fourth Friday in the month: (Note that this exploits a certain mathematical property. It is not possible to say "fourth Thursday OR fourth Friday" in one rule. It is possible with multiple rules, though.) +.PP +Matching across days might not do what is expected. For instance, +.IP +\-m time \-\-weekdays Mo \-\-timestart 23:00 \-\-timestop 01:00 +Will match Monday, for one hour from midnight to 1 a.m., and then +again for another hour from 23:00 onwards. If this is unwanted, e.g. if you +would like 'match for two hours from Montay 23:00 onwards' you need to also specify +the \-\-contiguous option in the example above. |