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
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
{
"nftables": [
{
"metainfo": {
"version": "VERSION",
"release_name": "RELEASE_NAME",
"json_schema_version": 1
}
},
{
"table": {
"family": "ip",
"name": "testt",
"handle": 0
}
},
{
"chain": {
"family": "ip",
"table": "testt",
"name": "testc",
"handle": 0,
"type": "filter",
"hook": "input",
"prio": 0,
"policy": "accept"
}
},
{
"set": {
"family": "ip",
"name": "ssh_meter",
"table": "testt",
"type": "ipv4_addr",
"handle": 0,
"size": 65535,
"flags": [
"dynamic"
]
}
},
{
"rule": {
"family": "ip",
"table": "testt",
"chain": "testc",
"handle": 0,
"expr": [
{
"match": {
"op": "==",
"left": {
"payload": {
"protocol": "tcp",
"field": "dport"
}
},
"right": 22
}
},
{
"match": {
"op": "in",
"left": {
"ct": {
"key": "state"
}
},
"right": "new"
}
},
{
"set": {
"op": "add",
"elem": {
"payload": {
"protocol": "ip",
"field": "saddr"
}
},
"set": "@ssh_meter",
"stmt": [
{
"limit": {
"rate": 10,
"burst": 5,
"per": "second"
}
}
]
}
},
{
"accept": null
}
]
}
}
]
}
|