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之前发过一个帖子有关Telus, Shaw 的比较,
. ~# B9 V' a. S( B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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7 @+ u4 I, {( G+ R+ }Does Telus block any ports? 0 s- w$ }! H1 \
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The only packages with no blocked ports at this time are the Server packages.
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5 w, t0 l! U: JThe Blocked ports currently are:. D) e+ z: m8 Y; h3 Z
! T5 \4 J, k! UTCP 21 (ftp)
- C4 F+ L( N% r) s6 TCustomers 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./ V5 ^: i# `) `1 Z7 O
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TCP 25 (smtp)
" Q) z! c% A' R. V! p5 rCustomers 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.% j: ]9 k5 v P# C0 R$ s3 g
% y, p; g" M' N( w9 g/ pTCP 80 (www)2 ?6 |/ s* m. d& s/ T
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./ T0 Q' v6 V; T8 u9 R
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TCP 110 (pop3)( u- R+ H4 q' L! s+ G5 L: k* A
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% x! s, t) K: h) pTCP 6667 (ircd)' b5 ?; F" A* D0 W: a$ z4 ]
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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- T" P8 n. G! J) jTCP/UDP 135-139 (dcom and netbios)7 ~0 I" P1 J w6 a! J8 P% |, e
These ports are commonly exploited by worm viruses:- h; ^1 [! W# p" W, a9 Q+ ^
135 Windows RPC# q- ~* ^% S" f
136 PROFILE Naming System (basically unused)1 O+ D: ^+ a" W4 z0 |
137-139 Windows NetBios) q4 L! }& x( X2 r3 \: S
( R2 Y0 C" V! I5 n J! T4 q7 dTCP/UDP 445 (ms-ds)4 D# p. b0 I' j; x* Y( u3 x+ C* M
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 u% y3 F+ g7 l$ x0 A, W3 q
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TCP/UDP 1433-1434 (ms-sql)0 H* u9 _0 d/ Q0 G3 |" D% q( v. 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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