浏览器认定的不安全的端口
！！！ 严禁开放如下端口
firefox 和Google Chrome的列表类似
Google Chrome 默认非安全端口列表，避免开放以下端口：
| 序号 | 端口 | 端口作用 |
|---|---|---|
| 1 | 1 | tcpmux |
| 2 | 7 | echo |
| 3 | 9 | discard |
| 4 | 11 | systat |
| 5 | 13 | daytime |
| 6 | 15 | netstat |
| 7 | 17 | qotd |
| 8 | 19 | chargen |
| 9 | 20 | ftp data |
| 10 | 21 | ftp access |
| 11 | 22 | ssh |
| 12 | 23 | telnet |
| 13 | 25 | smtp |
| 14 | 37 | time |
| 15 | 42 | name |
| 16 | 43 | nicname |
| 17 | 53 | domain |
| 18 | 77 | priv-rjs |
| 19 | 79 | finger |
| 20 | 87 | ttylink |
| 21 | 95 | supdup |
| 22 | 101 | hostriame |
| 23 | 102 | iso-tsap |
| 24 | 103 | gppitnp |
| 25 | 104 | acr-nema |
| 26 | 109 | pop2 |
| 27 | 110 | pop3 |
| 28 | 111 | sunrpc |
| 29 | 113 | auth |
| 30 | 115 | sftp |
| 31 | 117 | uucp-path |
| 32 | 119 | nntp |
| 33 | 123 | NTP |
| 34 | 135 | loc-srv epmap |
| 35 | 139 | netbios |
| 36 | 143 | imap2 |
| 37 | 179 | BGP |
| 38 | 389 | ldap |
| 39 | 465 | smtp+ssl |
| 40 | 512 | print // exec |
| 41 | 513 | login |
| 42 | 514 | shell |
| 43 | 515 | printer |
| 44 | 526 | tempo |
| 45 | 530 | courier |
| 46 | 531 | chat |
| 47 | 532 | netnews |
| 48 | 540 | uucp |
| 49 | 556 | remotefs |
| 50 | 563 | nntp+ssl |
| 51 | 587 | stmp? |
| 52 | 601 | ?? |
| 53 | 636 | ldap+ssl |
| 54 | 993 | ldap+ssl |
| 55 | 995 | pop3+ssl |
| 56 | 2049 | nfs |
| 57 | 3659 | apple-sasl / PasswordServer |
| 58 | 4045 | lockd |
| 59 | 6000 | X11 |
| 60 | 6665 | Alternate IRC[Apple addition] |
| 61 | 6666 | Alternate IRC[Apple addition] |
| 62 | 6667 | Standard IRC[Apple addition] |
| 63 | 6668 | Alternate IRC[Apple addition] |
| 64 | 6669 | Alternate IRC[Apple addition] |
