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A port-knocking implementation

knockd is a port-knock server. It listens to all traffic on an ethernet (or PPP) interface, looking for special knock sequences of port-hits. A client makes these port-hits by sending a TCP (or UDP) packet to a port on the server. This port need not be open -- since knockd listens at the link-layer level, it sees all traffic even if it's destined for a closed port. When the server detects a specific sequence of port-hits, it runs a command defined in its configuration file. This can be used to open up holes in a firewall for quick access.

Version: 0.7.8-20151227 License: GPL-2 GitHub
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23 build(s) found
Builder Build Number Start Time Elapsed Time Watcher Build Status
15 9027 2024-10-10 1:38:43 0:00:23 837 build successful
13 75729 2024-08-03 1:34:04 0:00:25 24149 build successful
13.arm64 67778 2024-08-01 21:30:59 0:00:12 23898 build successful
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14.arm64 9977 2024-01-21 19:33:43 0:00:15 4347 build successful
14 13856 2023-11-25 8:14:51 0:01:31 2183 build successful
13.arm64 13691 2023-03-10 15:52:29 0:00:13 4394 build successful
13 14544 2023-01-13 0:48:16 0:01:12 2019 build successful
12 19572 2022-01-24 19:40:11 0:00:41 4000 build successful
12.arm64 29506 2021-11-26 3:15:41 0:00:20 1597 build successful
11 11907 2021-01-03 18:09:47 0:01:44 1587 build successful
11.arm64 7310 2021-01-03 16:18:55 0:00:29 1684 build successful
10.8 18432 2020-06-24 14:10:43 0:01:04 5531 build successful
10.6 11037 2020-04-01 18:06:08 0:07:59 5112 build successful
10.7 20015 2020-03-29 4:37:16 0:00:53 5095 build successful
10.13 80398 2020-03-26 13:51:04 0:01:05 23630 build successful
10.11 110464 2020-03-25 12:46:29 0:00:57 32673 build successful
10.15 26730 2020-03-21 11:25:56 0:01:40 3904 build successful
10.12 116742 2020-03-21 11:25:46 0:01:21 31670 build successful
10.14 56165 2020-03-21 11:25:36 0:01:23 14357 build successful
10.10 112739 2020-03-21 11:25:26 0:01:01 32736 build successful
10.9 115411 2020-03-21 11:25:16 0:00:54 32681 build successful
10.6.x86_64 22587 2020-03-21 11:25:05 0:04:48 5115 build successful