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之前发过一个帖子有关Telus, Shaw 的比较,
8 t% x4 c" h4 ] h! ]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。5 k- ?8 I* g' ?' h% d
M% r/ E c* C" D4 g7 m# g5 Z/ H% O% YDoes Telus block any ports? ) N' i$ s7 e) K- c
$ X5 |) \# F: D) M6 e* yThe only packages with no blocked ports at this time are the Server packages. 4 Y9 t6 x# e; K/ m" i" \/ I
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The Blocked ports currently are:7 S/ J* t2 ^8 O& I; f( G" F6 E
" A# V3 L4 }$ J9 a* v0 T1 a! cTCP 21 (ftp)7 u2 S# @% I9 q2 I
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)0 O C4 q0 [8 P& w9 I
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.! L: n I2 n. Q6 Q3 `
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TCP 80 (www)$ W% W% [* {4 }5 B
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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! M% |9 P* Z6 {- X0 @! |& yTCP 110 (pop3)* C& }9 T: D- f( Q
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 K. K7 X+ l5 X' Y+ [
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TCP 6667 (ircd)+ X8 r9 t' Y$ i% ?0 d& R
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)5 G, z3 F r# h g! y. ^4 y9 r; C7 X
These ports are commonly exploited by worm viruses:) m: q1 D6 e* Y7 y# Y) E
135 Windows RPC
9 G0 G! m0 Z/ e b136 PROFILE Naming System (basically unused)) x5 q9 w7 O0 \2 k \( ]
137-139 Windows NetBios9 i. J, @- ]4 Q" @6 ^2 w8 j
' L% F( T; c: e, a. Q. a3 KTCP/UDP 445 (ms-ds)
5 R- K, n3 H6 r9 @3 AMicrosoft 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.1 O9 C0 }4 B# V
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TCP/UDP 1433-1434 (ms-sql)
/ @7 q% i. w! L( S% g, N- D. JMicrosoft 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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