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之前发过一个帖子有关Telus, Shaw 的比较,
! p4 m* \; K# F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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Does Telus block any ports?
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The only packages with no blocked ports at this time are the Server packages. 1 C8 d4 t% ]$ W
/ L5 g' U/ }: P& i9 b" [0 vThe Blocked ports currently are:
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5 a1 [' j8 k" X# xTCP 21 (ftp)1 z$ W e: @1 Q [
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.
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TCP 25 (smtp)
& p( m8 b/ N3 N1 R+ x! E2 DCustomers 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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- _3 a+ U) F$ a' [) U& K# A. w- lTCP 80 (www)6 @- `# G" w* ?; a" p/ U: F
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.4 ]3 f: Y9 d, Q( q4 b
$ k$ S8 _6 s: N9 _& ^TCP 110 (pop3)% G8 s1 y7 I1 t) l- a( t
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.. t# M6 F+ p* A. M% s8 v2 I
/ R/ o' m: w r: A% aTCP 6667 (ircd)
\9 s# ~4 U6 R, S" }/ r; H5 BCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.! P9 f7 F. |7 u, i( }6 u
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TCP/UDP 135-139 (dcom and netbios)
# l% w6 d; H4 m7 h9 oThese ports are commonly exploited by worm viruses:2 c4 I4 H0 ^& X; O9 t7 r- P, z, t
135 Windows RPC9 W; K) B5 [0 D7 F% z3 S
136 PROFILE Naming System (basically unused)
* S3 D' t2 f3 F4 c6 L' P137-139 Windows NetBios
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! {: o# {/ K6 x! L2 R& i. XTCP/UDP 445 (ms-ds)4 A8 f( }7 g: v5 g3 l h; 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.3 n5 {/ h$ q) `. o4 S& U$ u" v
% o) N- H# U6 h( r% F* }8 yTCP/UDP 1433-1434 (ms-sql)
G! G, m: ^4 }+ B5 M" WMicrosoft 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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