Mac OSX 为什么那么多的 TCP 链接呢? - V2EX
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lenqu
V2EX    macOS

Mac OSX 为什么那么多的 TCP 链接呢?

  •  
  •   lenqu Mar 8, 2020 3010 views
    This topic created in 2240 days ago, the information mentioned may be changed or developed.

    所有结果都在 netstat -an | grep tcp 下所得

    一开机没联网之前

    tcp6 0 0 *.49152 . LISTEN
    tcp4 0 0 *.49152 . LISTEN

    联网以后

    tcp4 0 0 192.168.0.102.49235 17.125.250.130.443 ESTABLISHED
    tcp4 0 0 192.168.0.102.49232 17.248.156.108.443 ESTABLISHED
    tcp4 0 0 192.168.0.102.49230 111.206.109.244.443 ESTABLISHED
    tcp4 0 0 192.168.0.102.49216 17.250.120.17.443 ESTABLISHED
    tcp4 0 0 192.168.0.102.49215 17.248.152.145.443 ESTABLISHED
    tcp4 0 0 192.168.0.102.49212 17.248.152.145.443 ESTABLISHED
    tcp4 0 0 192.168.0.102.49211 17.248.152.145.443 ESTABLISHED
    tcp4 0 0 192.168.0.102.49210 17.248.152.145.443 ESTABLISHED
    tcp4 0 0 192.168.0.102.49209 17.248.152.145.443 ESTABLISHED
    tcp4 0 0 192.168.0.102.49199 111.206.109.244.443 ESTABLISHED
    tcp4 0 0 192.168.0.102.49198 111.206.109.244.443 ESTABLISHED
    tcp4 0 0 192.168.0.102.49197 17.250.120.145.443 ESTABLISHED
    tcp4 0 0 192.168.0.102.49196 17.250.120.145.443 ESTABLISHED
    tcp4 0 0 192.168.0.102.49195 17.250.120.145.443 ESTABLISHED
    tcp4 0 0 192.168.0.102.49184 40.100.54.18.443 ESTABLISHED
    tcp4 0 0 192.168.0.102.49183 17.250.120.241.443 ESTABLISHED
    tcp4 0 0 192.168.0.102.49182 17.250.120.241.443 ESTABLISHED
    tcp4 0 0 192.168.0.102.49181 17.250.120.241.443 ESTABLISHED
    tcp4 0 0 192.168.0.102.49173 17.248.156.104.443 ESTABLISHED
    tcp4 0 0 192.168.0.102.49172 17.248.156.104.443 ESTABLISHED
    tcp4 0 0 192.168.0.102.49163 111.206.109.248.443 ESTABLISHED
    tcp4 0 0 192.168.0.102.49161 111.206.109.248.443 ESTABLISHED
    tcp4 0 0 192.168.0.102.49160 17.252.204.85.5223 ESTABLISHED
    tcp6 0 0 *.49152 . LISTEN
    tcp4 0 0 *.49152 . LISTEN
    tcp4 0 0 192.168.0.102.49164 111.206.109.120.443 TIME_WAIT
    tcp4 0 0 192.168.0.102.49200 121.18.169.14.443 TIME_WAIT
    tcp4 0 0 192.168.0.102.49226 17.248.135.233.443 TIME_WAIT
    tcp4 0 0 192.168.0.102.49231 111.206.109.244.443 TIME_WAIT

    过一段时间以后就剩

    tcp4 0 0 192.168.0.12.49160 17.252.204.85.5223 ESTABLISHED
    tcp6 0 0 *.49152 . LISTEN
    tcp4 0 0 *.49152 . LISTEN

    有大佬能解释解释么?这个端口 5223 连接的是哪里的呢?

    8 replies    2020-03-09 13:47:35 +08:00
    bsfx2
        1
    bsfx2  
       Mar 8, 2020   1
    https://support.apple.com/zh-cn/HT202944

    5223 端口用于 Apple 推送。17.0.0.0/8 都是 Apple 的 IP 地址。
    xfelix
        2
    xfelix  
       Mar 8, 2020   1
    Apple push notification
    LagunAPaTa
        3
    LagunAPaTa  
       Mar 8, 2020   2
    icloud itunes 的登录 oscp 的更新 balabalabala 之类
    lenqu
        4
    lenqu  
    OP
       Mar 8, 2020
    @Satelli 谢谢大佬,我这回知道 apple 的 ip 是真的多
    lenqu
        5
    lenqu  
    OP
       Mar 8, 2020
    @LagunAPaTa
    大佬知道这三个 ip 是哪里的么?
    我查看了一下都是北京的,但是不知道是谁的 ip
    111.206.109.244
    111.206.109.248
    111.206.109.120
    LagunAPaTa
        6
    LagunAPaTa  
       Mar 8, 2020
    @lenqu 一般是一些数据中心的机房 CDN 之类的吧
    shadowsockss
        7
    shadowsockss  
       Mar 9, 2020
    可以安装 wireshark 查看访问了哪些域名
    lenqu
        8
    lenqu  
    OP
       Mar 9, 2020
    @LagunAPaTa 谢谢,好的
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