/usr/src/xtables-addons-2.12/extensions/pknock/xt_pknock.h is in xtables-addons-dkms 2.12-0.1.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 | /*
* Kernel module to implement Port Knocking and SPA matching support.
*
* (C) 2006-2008 J. Federico Hernandez <fede.hernandez@gmail.com>
* (C) 2006 Luis Floreani <luis.floreani@gmail.com>
*
* $Id$
*
* This program is released under the terms of GNU GPL version 2.
*/
#ifndef _XT_PKNOCK_H
#define _XT_PKNOCK_H
#define PKNOCK "xt_pknock: "
enum {
XT_PKNOCK_KNOCKPORT = 1 << 0,
XT_PKNOCK_TIME = 1 << 1,
XT_PKNOCK_NAME = 1 << 2,
XT_PKNOCK_STRICT = 1 << 3,
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,
XT_PKNOCK_MAX_BUF_LEN = 31,
XT_PKNOCK_MAX_PASSWD_LEN = 31,
};
#define DEBUG 1
struct xt_pknock_mtinfo {
char rule_name[XT_PKNOCK_MAX_BUF_LEN+1];
uint32_t rule_name_len;
char open_secret[XT_PKNOCK_MAX_PASSWD_LEN+1];
uint32_t open_secret_len;
char close_secret[XT_PKNOCK_MAX_PASSWD_LEN+1];
uint32_t close_secret_len;
uint8_t option; /* --time, --knock-port, ... */
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 {
char rule_name[XT_PKNOCK_MAX_BUF_LEN+1];
__be32 peer_ip;
};
#endif /* _XT_PKNOCK_H */
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