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之前发过一个帖子有关Telus, Shaw 的比较,
6 D* g- E: T/ s Y! B( M1 L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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( @- F( a* M+ t& J. F4 s: EDoes Telus block any ports? 6 Y+ q* @5 `+ V
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The only packages with no blocked ports at this time are the Server packages. - Y- D8 @- v. e- F6 e) s
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The Blocked ports currently are:
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TCP 21 (ftp)
|0 ]4 \) T X O1 C& N( e! O2 {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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$ c/ `% V6 Y: NTCP 25 (smtp)
4 g- @) n( J7 y9 f7 |4 TCustomers 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.& U/ M0 D, x' N- H
7 l4 ]% C4 p; h5 U% s# _% j+ ?% YTCP 80 (www)) Z, I3 v+ B$ ]1 F
Customers 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.0 v* z6 {8 \" e& B' X* J4 n! W" n
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TCP 110 (pop3). L i8 v6 U2 u B S( V" S J( @
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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* ~0 F2 ^9 I) z& V( e, ~5 hTCP 6667 (ircd)0 @6 L2 W, a' k$ Y! a, V3 j, F
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.; X0 {7 Q8 W- X% q$ x
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TCP/UDP 135-139 (dcom and netbios)- e ~. g$ h, }$ q
These ports are commonly exploited by worm viruses:# a) t) a# v {/ [9 N9 E1 A
135 Windows RPC7 L; `, W. i- q; [
136 PROFILE Naming System (basically unused)
# D9 R1 r# F% k137-139 Windows NetBios: [- ~7 K6 \/ a! I" X b5 E
4 w9 f$ l1 A- S# `7 k% p5 e9 C( YTCP/UDP 445 (ms-ds)
/ z4 s9 K9 r7 K/ M' Y- D$ S5 \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.0 @7 w0 F8 t$ ~
8 ~* P+ e# d' rTCP/UDP 1433-1434 (ms-sql)
0 s% F7 P( D+ z* k' pMicrosoft 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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