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之前发过一个帖子有关Telus, Shaw 的比较,
/ N' s' N2 e8 W0 x: E, N6 ^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。7 W6 q d% V+ [4 k' q$ ]' m
7 U% Z1 U. }+ l$ Z, n% L9 DDoes Telus block any ports?
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7 X$ m2 D6 ^$ lThe only packages with no blocked ports at this time are the Server packages.
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The Blocked ports currently are:- p7 z$ d! [; Z9 e
6 _5 ], u# T" }TCP 21 (ftp)$ f, [8 Y$ \! N& {) o: Z$ ~1 j8 {
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. e O! k* }5 }2 h$ Z: ]
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TCP 25 (smtp); L: a$ y. B" z0 |, ~
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." {3 h' z1 u; K8 L) C1 P7 q5 u$ n9 _
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TCP 80 (www)7 Z B( T- l. j: m8 J \0 ?- l
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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$ ~: f# e9 J: z7 [' w" ]# @TCP 110 (pop3)9 X) f8 M" k6 g+ G% t" R$ k3 _
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.4 _- e' P( |$ t4 G _9 s7 |! N! O
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TCP 6667 (ircd)* {+ F5 E/ _5 I6 R: O
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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TCP/UDP 135-139 (dcom and netbios)
' B0 H" i% V# mThese ports are commonly exploited by worm viruses:
/ L" }: o6 C5 o: y0 R8 H$ j135 Windows RPC. X: S3 T b' X3 P" @/ O
136 PROFILE Naming System (basically unused)
) ~8 p" j% d$ t137-139 Windows NetBios* i; L& O% b4 o) E
1 g! z, Q0 H" J2 W8 M' Z0 Q6 {TCP/UDP 445 (ms-ds)
$ F# c, Y- ^5 x2 `* uMicrosoft 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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, s2 q- ]0 l+ \; mTCP/UDP 1433-1434 (ms-sql)
8 C3 A- B: I2 h0 I2 _( z% F" B, AMicrosoft 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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