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之前发过一个帖子有关Telus, Shaw 的比较,
: w& q( b' t$ m! d7 M* P' o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。' ]! z- e7 J, q% S
& q0 m% q/ ^8 }2 N4 RDoes Telus block any ports? % D, E* X, T% b' x- g7 S) _5 T
& Q/ ?8 t" A4 l2 t+ b n# l( FThe only packages with no blocked ports at this time are the Server packages. I& x E: }+ ` c# j
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The Blocked ports currently are:
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0 F5 x: b6 h+ U( eTCP 21 (ftp)
( G! W8 A" U! L8 ~, v/ i$ YCustomers 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.( ^, O) }* v3 M5 Y
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TCP 25 (smtp)2 d9 z6 p0 }( g2 p
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.& j& ~+ y. b: l, D
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TCP 80 (www)
* u$ r3 y) P' |, Y# \9 MCustomers 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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: L" j* V5 e) y {% Y/ pTCP 110 (pop3)3 K8 V& _# i1 B/ w! }0 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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TCP 6667 (ircd)$ M! y( A! j4 Y/ n' S0 _
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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5 `! j, W* K+ B+ qTCP/UDP 135-139 (dcom and netbios)
5 G/ @7 c. D5 T1 A6 V* K2 a9 AThese ports are commonly exploited by worm viruses:
6 `; t( O/ D( G6 K2 @8 p135 Windows RPC
1 S$ G* f; u6 m& X2 `4 x0 }8 b4 i136 PROFILE Naming System (basically unused): K4 Q7 d( T. b, F! W1 {
137-139 Windows NetBios- D8 t9 ?, N( c! G5 I8 M5 d: ^( M
3 y5 O! C+ M& R8 S. D- R2 U9 ZTCP/UDP 445 (ms-ds)
- r/ {' H7 p" d' @: M9 rMicrosoft 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.+ L# {% D+ m% m& v. Z$ E
5 K! Z; {) q7 Q) b+ vTCP/UDP 1433-1434 (ms-sql)/ s8 K( G& g0 E7 A4 r, n
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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