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之前发过一个帖子有关Telus, Shaw 的比较,
4 n" S8 ? ] u$ ?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. . y$ T6 z$ H0 t7 N1 b5 ~
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The Blocked ports currently are:
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; ~7 W- i5 n% M6 T8 _! T& F. kTCP 21 (ftp)
' U: G/ ~9 ^! v7 q% G# Z) B2 V7 kCustomers 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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& K7 u9 l5 b3 m- I! G' A% pTCP 25 (smtp)/ w9 h8 Y$ c4 U5 n; s* V$ ?
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.4 b, i' b4 b2 g8 D1 C& w( T
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TCP 80 (www): |$ q+ e h( l. S% O/ x
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.& o6 d, E+ M+ w6 c9 A! u/ {2 Q
2 ?* E! _- B( F' i, rTCP 110 (pop3)" E1 Y$ l+ }' K0 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.* V+ M0 V/ v7 @
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TCP 6667 (ircd)% l3 G2 L+ A: T2 e0 g2 T
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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* g. R: v. n7 b4 w _: T7 i2 k- ZTCP/UDP 135-139 (dcom and netbios)
/ S0 w* v ~# fThese ports are commonly exploited by worm viruses:) l' N* b* s( |/ f& w! V0 l" {
135 Windows RPC. b" h. u4 L' C
136 PROFILE Naming System (basically unused)& v' c, c0 Y- `8 ]0 r
137-139 Windows NetBios2 `/ L) S. ?5 J+ Z- F& w% {
# P: R6 D5 I* \* G+ K) }+ \1 ]" STCP/UDP 445 (ms-ds)7 ^6 ?8 i/ c* j
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. k( D- g! ^; S3 N- K
D# H4 q, S% x( u2 O! d# ~TCP/UDP 1433-1434 (ms-sql)4 y \# m& f" \- y( V
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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