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之前发过一个帖子有关Telus, Shaw 的比较，
" ~1 n+ [$ `7 k# r: v; s家用Telus 已经封锁了不少端口。 也随时不通知下说锁就锁， 非常讨厌。
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% v, t2 L+ Z$ @6 IDoes Telus block any ports?
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& r c- H1 q4 h* e! p/ uThe only packages with no blocked ports at this time are the Server packages.
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2 i/ ?; l7 H) ~( w5 ^. pThe Blocked ports currently are:! a5 A" E8 }$ x$ u6 J. ]
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TCP 21 (ftp)
" T0 x; M$ v# f1 z3 q- _Customers running an FTP server will no longer be able to have Internet users connect to their server. Many customers computers are used as FTP servers to store illegal files.; ?( @6 v0 K/ W' A# z0 t. a/ E
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TCP 25 (smtp) J- p! E1 ^+ n0 l$ O
Customers running a SMTP mail server will no longer be able to receive email requests. Also, Telus users will not be able to connect to non-Telus smtp servers on port 25. Prevent mail servers that operate as an open relay. Open relays are used without a customer?s knowledge to sends millions of pieces of Spam.
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4 T# b' j- l8 m) _+ u7 M+ M+ J/ FTCP 80 (www)
! |2 y8 u2 }% uCustomers running a Web server will no longer be able to have Internet users connect to their server. Common exploit on old Window IIS server and Linux boxes that are not properly patched.
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TCP 110 (pop3)$ a! X) m- k D5 m. {+ A6 [0 E
Customers running a POP mail server will no longer be able to have Internet users connect to the server. Prevent mail servers that operate as an open relay. Open relays are used without a customer?s knowledge to sends millions of pieces of Spam.
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w5 b# p U3 uTCP 6667 (ircd)
3 [: f! h3 E' o* m" A0 NCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.: M' }; Y9 i: z
) Z6 }! O4 D% _1 y( n5 TTCP/UDP 135-139 (dcom and netbios)
q, h5 ^: r: M8 ZThese ports are commonly exploited by worm viruses:
4 r1 J: L2 [( }: |; f( |2 r135 Windows RPC
- I3 V$ ?0 E& h# B# M136 PROFILE Naming System (basically unused)2 M* k, |# o8 z6 }' |" W) O
137-139 Windows NetBios
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% L1 o" A5 u; o% }' x8 L8 W, vTCP/UDP 445 (ms-ds)6 ^) V7 j& P, _1 ~) I
Microsoft Directory Services - Customers that allow legitimate Internet users access to their computers will loose this ability. This allows hackers to directly connect to a Windows based computer and gain total control over the OS.
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TCP/UDP 1433-1434 (ms-sql)0 k8 K. I9 N9 E1 g! w, w# K, }
Microsoft SQL server - Customer running an SQL server will no long be able to have Internet user connect to their server. There are several worm viruses that exploit holes in SQL server. |
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狗仔卡
发表于 2009-11-7 17:58
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