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之前发过一个帖子有关Telus, Shaw 的比较,
- U! F+ m8 m6 a' P4 H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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Does Telus block any ports? 9 B8 @1 N) R2 j7 K/ x! S
& c! C& r5 W+ y6 P5 oThe only packages with no blocked ports at this time are the Server packages. % ^3 i2 m1 y; e- K' U
3 q4 l# x& o) A1 OThe Blocked ports currently are:
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TCP 21 (ftp)9 A0 T3 c! x. Y* z X, b& 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.
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* ^! H' M3 W. g& ~9 ]TCP 25 (smtp)9 l0 O$ @& N4 V# q& U% o* Y
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.) ?, q# |! x. {# j3 Z4 f
5 s/ j. \; q: h2 D/ GTCP 80 (www)
/ t7 Y5 I+ s1 S7 |/ K# z. O. h( T' T( eCustomers 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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) o9 ]( d$ D I' E! T5 ITCP 110 (pop3); @3 ?" Y# b- {
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.5 ~# b7 p# ]7 I
8 b9 J. ]. L R9 q$ cTCP 6667 (ircd)% k2 [4 S* _3 k% R
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.$ y1 W2 h2 H# B2 l6 ` ?
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TCP/UDP 135-139 (dcom and netbios)
1 j# ^$ d+ F# R# r# x) h- bThese ports are commonly exploited by worm viruses:! I* @& T0 d) G5 a0 I
135 Windows RPC" u9 {) O9 a" H5 L% m! W5 t, }
136 PROFILE Naming System (basically unused)
6 k6 o$ X3 t, B2 y; ?- B' ^137-139 Windows NetBios
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8 {% n8 r3 o1 v0 y \( B9 w% w& hTCP/UDP 445 (ms-ds); e: C# z# a/ e" U1 b1 g; m# t% p7 ~
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)
3 h: k4 A5 B/ j2 B' T% y+ k4 KMicrosoft 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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