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之前发过一个帖子有关Telus, Shaw 的比较, 2 k/ f- [# z% Z6 O/ E1 \3 m
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。/ {7 ]' c$ L# U
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Does Telus block any ports?
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The only packages with no blocked ports at this time are the Server packages. j6 W3 @1 B# ]$ R" Q W* K+ t
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The Blocked ports currently are:
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TCP 21 (ftp)
, k% P% Z+ H6 W0 A' y& JCustomers 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.
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2 _& Z/ M( ]- T5 ?" {TCP 25 (smtp)
/ M8 S2 I) v8 l/ P# bCustomers 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.. j( C8 t* r/ Q& A6 K
( F& _2 \/ q& p9 N' tTCP 80 (www)
) W8 w' y) f0 A& T& ]# s; lCustomers 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) Z( D" {. q+ l3 H! e6 h
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.; K; Q2 c9 v3 ?+ {) q
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TCP 6667 (ircd)
9 L4 U1 q6 P3 E, |5 rCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.
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3 H. M0 W r) m4 W. dTCP/UDP 135-139 (dcom and netbios)
) @6 y$ a+ x+ z* w0 L5 u wThese ports are commonly exploited by worm viruses:4 [3 m3 q% X* B+ _' k
135 Windows RPC
% [/ D4 @) Z4 D5 T/ ~136 PROFILE Naming System (basically unused)' H; O' D" Z" J" T, F$ a2 ~
137-139 Windows NetBios
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8 i- D; M1 P3 {TCP/UDP 445 (ms-ds)
, q. d6 t6 P# ?! z' Z+ C7 {1 CMicrosoft 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.# W+ r& p9 r: J, g5 w# V6 m
- P( X0 i6 F5 L% N; HTCP/UDP 1433-1434 (ms-sql)
+ u/ m+ r+ o. w( @0 QMicrosoft 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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