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之前发过一个帖子有关Telus, Shaw 的比较, * w, k$ Q6 p, u8 x
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。1 K) J" T& F3 K. a
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Does Telus block any ports?
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. z4 [9 \4 K' A% N h, KThe only packages with no blocked ports at this time are the Server packages. / ?9 f, L( w- A0 Q7 S
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The Blocked ports currently are:
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1 U( e; f! D: N7 L4 b5 q$ `2 p' QTCP 21 (ftp)
* q- G3 K2 \, {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.4 o# ?6 @: S% V3 o% W7 L" h
# y+ R% V! N% w3 R5 \/ r5 LTCP 25 (smtp), g9 E1 `8 ]% H% h7 X
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.
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TCP 80 (www)
$ b7 b1 R2 c6 d$ M- e, iCustomers 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.% e7 h$ ?' E' M$ {
" G0 z& B/ G+ o: mTCP 110 (pop3)8 `' g5 _% J4 G$ N
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.+ c! D8 a* q0 G; j! c( j( S9 e6 d% L2 v
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TCP 6667 (ircd)$ e3 F8 P! [- |3 z5 D
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.9 @) ?" D2 @% H* T8 r, @ S& W
/ x4 b& J. L/ [$ O' ^' G( jTCP/UDP 135-139 (dcom and netbios); K' p3 {$ }/ P1 I
These ports are commonly exploited by worm viruses:* w% X+ O ]/ H* o* {% Q0 p
135 Windows RPC& f8 e1 @8 M2 k+ `$ ?$ L
136 PROFILE Naming System (basically unused)
9 t4 j" \4 _, \- E137-139 Windows NetBios: W* E1 s& ` A! p/ X2 c, c- k
) y) }+ a- a4 c% d$ k- TTCP/UDP 445 (ms-ds)' _0 c" ^' M! C* P" i
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.
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TCP/UDP 1433-1434 (ms-sql)
4 w4 W% q# b7 |& u0 n/ e4 Q# }# bMicrosoft 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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