Linux系统如何精确设置和限制特定应用的网速？

Linux系统限制网速的方法与技巧

使用iptables限制网速

iptables是Linux系统中用于控制网络流量的重要工具,通过配置iptables规则可以实现对特定IP或端口的网速限制。

安装iptables

sudo apt-get install iptables

创建规则

以下是一个简单的示例，限制IP地址为192.168.1.100的网速为1Mbps：

sudo iptables -A OUTPUT -p tcp -s 192.168.1.100 --dport 80 -m bandwidth --rate 1Mbit/s -j ACCEPT

保存规则

为了在重启系统后仍然生效,需要将规则保存到文件中：

sudo iptables-save > /etc/iptables/rules.v4

使用tc（Traffic Control）限制网速

tc是Linux系统中用于流量控制的工具,可以精确地控制网络流量。

安装tc

sudo apt-get install net-tools

创建规则

以下是一个简单的示例，限制IP地址为192.168.1.100的网速为1Mbps：

sudo tc qdisc add dev eth0 root netem rate 1Mbit/s
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 1 handle 1 fw flowid 1:0
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 2 handle 2 fw flowid 1:1
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 3 handle 3 fw flowid 1:2
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 4 handle 4 fw flowid 1:3
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 5 handle 5 fw flowid 1:4
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 6 handle 6 fw flowid 1:5
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 7 handle 7 fw flowid 1:6
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 8 handle 8 fw flowid 1:7
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 9 handle 9 fw flowid 1:8
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 10 handle 10 fw flowid 1:9
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 11 handle 11 fw flowid 1:10
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 12 handle 12 fw flowid 1:11
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 13 handle 13 fw flowid 1:12
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 14 handle 14 fw flowid 1:13
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 15 handle 15 fw flowid 1:14
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 16 handle 16 fw flowid 1:15
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 17 handle 17 fw flowid 1:16
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 18 handle 18 fw flowid 1:17
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 19 handle 19 fw flowid 1:18
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 20 handle 20 fw flowid 1:19
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 21 handle 21 fw flowid 1:20
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 22 handle 22 fw flowid 1:21
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 23 handle 23 fw flowid 1:22
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 24 handle 24 fw flowid 1:23
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 25 handle 25 fw flowid 1:24
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 26 handle 26 fw flowid 1:25
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 27 handle 27 fw flowid 1:26
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 28 handle 28 fw flowid 1:27
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 29 handle 29 fw flowid 1:28
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 30 handle 30 fw flowid 1:29
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 31 handle 31 fw flowid 1:30
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 32 handle 32 fw flowid 1:31
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 33 handle 33 fw flowid 1:32
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 34 handle 34 fw flowid 1:33
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 35 handle 35 fw flowid 1:34
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 36 handle 36 fw flowid 1:35
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 37 handle 37 fw flowid 1:36
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 38 handle 38 fw flowid 1:37
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 39 handle 39 fw flowid 1:38
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 40 handle 40 fw flowid 1:39
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 41 handle 41 fw flowid 1:40
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 42 handle 42 fw flowid 1:41
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 43 handle 43 fw flowid 1:42
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 44 handle 44 fw flowid 1:43
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 45 handle 45 fw flowid 1:44
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 46 handle 46 fw flowid 1:45
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 47 handle 47 fw flowid 1:46
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 48 handle 48 fw flowid 1:47
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 49 handle 49 fw flowid 1:48
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 50 handle 50 fw flowid 1:49
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 51 handle 51 fw flowid 1:50
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 52 handle 52 fw flowid 1:51
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 53 handle 53 fw flowid 1:52
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 54 handle 54 fw flowid 1:53
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 55 handle 55 fw flowid 1:54
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 56 handle 56 fw flowid 1:55
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 57 handle 57 fw flowid 1:56
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 58 handle 58 fw flowid 1:57
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 59 handle 59 fw flowid 1:58
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 60 handle 60 fw flowid 1:59
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 61 handle 61 fw flowid 1:60
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 62 handle 62 fw flowid 1:61
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 63 handle 63 fw flowid 1:62
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 64 handle 64 fw flowid 1:63
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 65 handle 65 fw flowid 1:64
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 66 handle 66 fw flowid 1:65
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 67 handle 67 fw flowid 1:66
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 68 handle 68 fw flowid 1:67
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 69 handle 69 fw flowid 1:68
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 70 handle 70 fw flowid 1:69
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 71 handle 71 fw flowid 1:70
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 72 handle 72 fw flowid 1:71
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 73 handle 73 fw flowid 1:72
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 74 handle 74 fw flowid 1:73
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 75 handle 75 fw flowid 1:74
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 76 handle 76 fw flowid 1:75
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 77 handle 77 fw flowid 1:76
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 78 handle 78 fw flowid 1:77
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 79 handle 79 fw flowid 1:78
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 80 handle 80 fw flowid 1:79
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 81 handle 81 fw flowid 1:80
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 82 handle 82 fw flowid 1:81
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 83 handle 83 fw flowid 1:82
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 84 handle 84 fw flowid 1:83
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 85 handle 85 fw flowid 1:84
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 86 handle 86 fw flowid 1:85
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 87 handle 87 fw flowid 1:86
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 88 handle 88 fw flowid 1:87
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 89 handle 89 fw flowid 1:88
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 90 handle 90 fw flowid 1:89
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 91 handle 91 fw flowid 1:90
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 92 handle 92 fw flowid 1:91
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 93 handle 93 fw flowid 1:92
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 94 handle 94 fw flowid 1:93
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 95 handle 95 fw flowid 1:94
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 96 handle 96 fw flowid 1:95
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 97 handle 97 fw flowid 1:96
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 98 handle 98 fw flowid 1:97
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 99 handle 99 fw flowid 1:98
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 100 handle 100 fw flowid 1:99
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 101 handle 101 fw flowid 1:100
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 102 handle 102 fw flowid 1:101
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 103 handle 103 fw flowid 1:102
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 104 handle 104 fw flowid 1:103
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 105 handle 105 fw flowid 1:104
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 106 handle 106 fw flowid 1:105
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 107 handle 107 fw flowid 1:106
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 108 handle 108 fw flowid 1:107
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 109 handle 109 fw flowid 1:108
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 110 handle 110 fw flowid 1:109
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 111 handle 111 fw flowid 1:110
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 112 handle 112 fw flowid 1:111
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 113 handle 113 fw flowid 1:112
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 114 handle 114 fw flowid 1:113
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 115 handle 115 fw flowid 1:114
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 116 handle 116 fw flowid 1:115
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 117 handle 117 fw flowid 1:116
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 118 handle 118 fw flowid 1:117
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 119 handle 119 fw flowid 1:118
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 120 handle 120 fw flowid 1:119
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 121 handle 121 fw flowid 1:120
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 122 handle 122 fw flowid 1:121
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 123 handle 123 fw flowid 1:122
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 124 handle 124 fw flowid 1:123
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 125 handle 125 fw flowid 1:124
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 126 handle 126 fw flowid 1:125
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 127 handle 127 fw flowid 1:126
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 128 handle 128 fw flowid 1:127
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 129 handle 129 fw flowid 1:128
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 130 handle 130 fw flowid 1:129
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 131 handle 131 fw flowid 1:130
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 132 handle 132 fw flowid 1:131
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 133 handle 133 fw flowid 1:132
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 134 handle 134 fw flowid 1:133
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 135 handle 135 fw flowid 1:134
sudo tc filter add dev eth0 parent 1:0 protocol ip prio 136 handle 136 fw flowid 1:135
sudo tc filter add dev eth0 parent