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pknock: implement automatic closing

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Added the optional "--autoclose" parameter (takes minutes) that
closes the pknock-opened rule in a specified time.

Signed-off-by: Jan Rafaj <jr+netfilter-devel@cedric.unob.cz>
This commit is contained in:
Jan Rafaj
2009-10-12 00:01:31 +02:00
committed by Jan Engelhardt
parent 284c0e9493
commit 9e5c2e7ee9
3 changed files with 74 additions and 9 deletions
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2
extensions/pknock/xt_pknock.h
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@@ -21,6 +21,7 @@ enum {
XT_PKNOCK_CHECKIP = 1 << 4,
XT_PKNOCK_OPENSECRET = 1 << 5,
XT_PKNOCK_CLOSESECRET = 1 << 6,
XT_PKNOCK_AUTOCLOSE = 1 << 7,
/* Can never change these, as they are make up the user protocol. */
XT_PKNOCK_MAX_PORTS = 15,
@@ -41,6 +42,7 @@ struct xt_pknock_mtinfo {
uint8_t ports_count; /* number of ports */
uint16_t port[XT_PKNOCK_MAX_PORTS]; /* port[,port,port,...] */
uint32_t max_time; /* max matching time between ports */
uint32_t autoclose_time;
};
struct xt_pknock_nl_msg {