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之前发过一个帖子有关Telus, Shaw 的比较,
m/ R# a7 r: A% v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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* a0 @ F! @# xDoes Telus block any ports? + z4 `: L$ c- C, {) E% a4 B
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The only packages with no blocked ports at this time are the Server packages.
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The Blocked ports currently are:1 Y. C: _5 e5 o. z
& X5 ^! r! [, e/ J5 U4 k% sTCP 21 (ftp) w# o2 d2 }! B) j! M6 S' R1 R
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.( l* E! q9 p# a
% X. }" |) E1 l- K2 ~2 `TCP 25 (smtp). z9 V1 X! A) ]/ {; _! c1 S( `7 h
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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, Z4 P9 R4 w/ y5 Q" g8 nTCP 80 (www)# I- i5 |" `4 k g/ a7 r0 n
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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2 _' [, L0 f1 A: Y; ITCP 110 (pop3)
" v/ c% s/ s3 T2 j$ B# gCustomers 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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TCP 6667 (ircd)
- ]' g: P7 a7 M* ?3 CCustomers 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 l' N, }+ d( J) C8 eTCP/UDP 135-139 (dcom and netbios): v5 f& ^ n4 F8 D
These ports are commonly exploited by worm viruses:
, C! o4 ?5 D' f4 A135 Windows RPC
6 v. U- d* R4 X' K R3 k* [5 F136 PROFILE Naming System (basically unused). [' _1 w2 t) I4 @; K1 E
137-139 Windows NetBios
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4 z2 S+ K' D0 |, O; L- h+ y8 o% [TCP/UDP 445 (ms-ds)3 C" w# {' L: v
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.- a. L% l5 _' ~. y+ C8 Y
0 e2 _9 d1 j! V8 h6 cTCP/UDP 1433-1434 (ms-sql)
9 i6 o% M1 _ HMicrosoft 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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