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之前发过一个帖子有关Telus, Shaw 的比较, , ^) C$ L( e: }0 E- v1 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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1 O. e4 j2 Y, v5 g) S% A+ rDoes Telus block any ports? 7 M$ D$ r' K) L( J4 m
+ Y4 F! b- N& }The only packages with no blocked ports at this time are the Server packages. ' A0 N5 C i; P5 [+ |7 a
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The Blocked ports currently are:
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2 ^4 f2 {6 Y, \1 }, uTCP 21 (ftp)
1 q% F9 J: G! R+ @$ Z5 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.5 [. Q9 t9 L$ c$ P: \7 V; O
* P; a9 J f \ NTCP 25 (smtp)
/ U) u* x7 Y% J2 e/ }- F( ?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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TCP 80 (www)8 ]1 f6 Z4 p) I1 k
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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TCP 110 (pop3)
* q% u$ c8 b3 `( dCustomers 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.2 L% e( g$ J1 p H4 a
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TCP 6667 (ircd)
, o, | O4 W' _ ]- I5 ^# E1 n& ICustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.6 h! ?* i8 C2 e1 L% N5 \4 o2 W
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TCP/UDP 135-139 (dcom and netbios); T/ H! {* X6 P1 `. d7 ^$ O
These ports are commonly exploited by worm viruses:* d5 C. g7 [+ x5 J
135 Windows RPC
9 i! [) b' ?1 A136 PROFILE Naming System (basically unused)- {. D) q' y2 [, v
137-139 Windows NetBios5 v7 Z2 G2 n% v: S
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TCP/UDP 445 (ms-ds)
, k$ r( [7 d! i9 qMicrosoft 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)! X; `9 ?7 e' A7 ? t/ x
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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