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Chrome 封锁的端口号

Chrome 禁止访问某些端口是为了防止协议混淆攻击(Protocol Confusion Attack)。这些端口通常被特定的网络协议占用,如果允许浏览器访问,可能被恶意网站利用来攻击这些服务。

https://chromium.googlesource.com/chromium/src.git/+/refs/heads/main/net/base/port_util.cc

https://fetch.spec.whatwg.org/#port-blocking

// The general list of blocked ports. Will be blocked unless a specific
// protocol overrides it. (Ex: ftp can use port 21)
// When adding a port to the list, consider also adding it to kAllowablePorts,
// below. See <https://fetch.spec.whatwg.org/#port-blocking>.
const int kRestrictedPorts[] = {
    0,      // Not in Fetch Spec.
    1,      // tcpmux
    7,      // echo
    9,      // discard
    11,     // systat
    13,     // daytime
    15,     // netstat
    17,     // qotd
    19,     // chargen
    20,     // ftp data
    21,     // ftp access
    22,     // ssh
    23,     // telnet
    25,     // smtp
    37,     // time
    42,     // name
    43,     // nicname
    53,     // domain
    69,     // tftp
    77,     // priv-rjs
    79,     // finger
    87,     // ttylink
    95,     // supdup
    101,    // hostriame
    102,    // iso-tsap
    103,    // gppitnp
    104,    // acr-nema
    109,    // pop2
    110,    // pop3
    111,    // sunrpc
    113,    // auth
    115,    // sftp
    117,    // uucp-path
    119,    // nntp
    123,    // NTP
    135,    // loc-srv /epmap
    137,    // netbios
    139,    // netbios
    143,    // imap2
    161,    // snmp
    179,    // BGP
    389,    // ldap
    427,    // SLP (Also used by Apple Filing Protocol)
    465,    // smtp+ssl
    512,    // print / exec
    513,    // login
    514,    // shell
    515,    // printer
    526,    // tempo
    530,    // courier
    531,    // chat
    532,    // netnews
    540,    // uucp
    548,    // AFP (Apple Filing Protocol)
    554,    // rtsp
    556,    // remotefs
    563,    // nntp+ssl
    587,    // smtp (rfc6409)
    601,    // syslog-conn (rfc3195)
    636,    // ldap+ssl
    989,    // ftps-data
    990,    // ftps
    993,    // ldap+ssl
    995,    // pop3+ssl
    1719,   // h323gatestat
    1720,   // h323hostcall
    1723,   // pptp
    2049,   // nfs
    3659,   // apple-sasl / PasswordServer
    4045,   // lockd
    5060,   // sip
    5061,   // sips
    6000,   // X11
    6566,   // sane-port
    6665,   // Alternate IRC [Apple addition]
    6666,   // Alternate IRC [Apple addition]
    6667,   // Standard IRC [Apple addition]
    6668,   // Alternate IRC [Apple addition]
    6669,   // Alternate IRC [Apple addition]
    6697,   // IRC + TLS
    10080,  // Amanda
};

开发时常用的端口:

3000 – Node.js/React 开发服务器
4200 – Angular 开发服务器
5000/5001 – ASP.NET Core 默认端口
8000/8080/8888 – 通用 HTTP 开发端口
3306 – MySQL (虽然不在黑名单,但不建议用于 HTTP)

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