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之前发过一个帖子有关Telus, Shaw 的比较,
1 E% Q1 [' K8 v/ u7 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。5 i2 _5 q$ S% b0 b- R+ @" z
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Does Telus block any ports? 0 r; L$ H4 B9 w( m. p' \: j
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The only packages with no blocked ports at this time are the Server packages.
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6 @: r( V# W1 ~8 L' j+ MThe Blocked ports currently are:! Y' h5 M+ f8 E- y1 }) @
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TCP 21 (ftp)
6 U& K+ W/ f6 `2 H% k" N$ w1 g6 WCustomers 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.- X9 @, v3 g: G/ A8 V
% s+ i2 z1 _" w/ D; z( a" f5 O" YTCP 25 (smtp)" s t: F1 I* U+ V
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.4 h, y: _! m, v2 v. \" e
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TCP 80 (www)$ `$ o7 C5 \+ p
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.
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_5 v& b# W) H# @) uTCP 110 (pop3), R- `+ X$ L8 A' k- [0 o4 @
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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' f, d6 \$ {: g+ i u0 E1 gTCP 6667 (ircd)2 ?( N' E; _! s: t, B2 S
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.
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" A3 e) u* Z# ^, M. d0 \& o* qTCP/UDP 135-139 (dcom and netbios). s/ y2 H* \4 a2 p
These ports are commonly exploited by worm viruses:
; T. i& d4 R( u& f3 B) f" W& t+ P* i135 Windows RPC0 w8 }; a# b9 U. Q" ~9 T
136 PROFILE Naming System (basically unused)
! z6 a# h. [; L8 a7 M. K7 U137-139 Windows NetBios$ Y% S$ P' g) e7 S8 b
) ~. y8 G/ n" L' CTCP/UDP 445 (ms-ds)' G+ U& d. g+ B) Z6 z
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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" k) c# E; E" c4 g( sTCP/UDP 1433-1434 (ms-sql)
0 C0 P+ L/ w) \) V, b5 Z4 [7 M/ `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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