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之前发过一个帖子有关Telus, Shaw 的比较,
! {% i; n o) G& l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? & k( {6 _) }3 R! Z
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The only packages with no blocked ports at this time are the Server packages. ( m1 J& ]: B" _8 u/ a# q
* c% u, Z6 ]2 }The Blocked ports currently are:& b. ` W) i6 \2 u! y- l
2 E9 U$ ?/ w; k: }TCP 21 (ftp)
/ @" o, F8 f3 l; nCustomers 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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" }- v. n2 m6 F. H. m. oTCP 25 (smtp)
6 ]& N# v f* a) ~9 jCustomers 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.8 D0 [) ^: Z1 _, {) c
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TCP 80 (www)
: x7 A$ p1 `% ]- F/ n% VCustomers 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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TCP 110 (pop3), a: y/ \' R+ X3 T1 i3 y
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.& |) }2 |8 j" Y
2 c# L) M7 ?- G3 m; }TCP 6667 (ircd)! t5 B G9 c2 n, ~. ]
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.+ P) G0 I: L) d6 x) H, U
% b s. |" P7 R& u/ t6 R! F* iTCP/UDP 135-139 (dcom and netbios)
) w$ w9 a0 s4 b6 c! {. gThese ports are commonly exploited by worm viruses:" \" C1 i+ f0 |3 A- c+ {
135 Windows RPC
# U$ m v0 u+ ]8 V) v136 PROFILE Naming System (basically unused)9 m* q4 ^. |* j3 Y' B/ R9 L% Q
137-139 Windows NetBios
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2 R$ r& E6 U# JTCP/UDP 445 (ms-ds)+ ~, |- [5 e& u% A
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.* c/ J' H3 u$ O8 q4 F; K! \
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TCP/UDP 1433-1434 (ms-sql)
7 r/ x' b1 @/ P7 w6 m" U' MMicrosoft 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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