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之前发过一个帖子有关Telus, Shaw 的比较,
1 h+ I/ V* V7 z4 o3 W3 B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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9 V. _+ I; O" h1 K' ]7 n" NDoes Telus block any ports?
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6 y' {2 i% k" v Y$ ^8 BThe only packages with no blocked ports at this time are the Server packages.
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* a' t, t" F% {% W* I# dThe Blocked ports currently are:+ b* x% p6 b/ O: j9 t' U
( n0 [. ^ |5 r- ^2 MTCP 21 (ftp)
3 Z7 t9 T m( e0 lCustomers 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)
/ h( f7 x) A- m4 q' v7 ICustomers 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)
4 \8 C/ f' C1 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.
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TCP 110 (pop3)" G$ y6 h% U- E3 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.
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& r- r! L0 P) H. X. X: ATCP 6667 (ircd)0 ?6 G/ j# @5 [+ f, c. a: P
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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- R% ^( D" W7 e' u! ? ATCP/UDP 135-139 (dcom and netbios)
U. ~) G3 }8 r- L# ?These ports are commonly exploited by worm viruses:- K& {2 E% m7 o% p) {
135 Windows RPC
( h7 M' M1 _0 C136 PROFILE Naming System (basically unused)
9 ~2 ] s7 ~+ S8 f# o137-139 Windows NetBios6 A! }; ~0 u b
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TCP/UDP 445 (ms-ds)
. N" b8 ~7 F) ~1 B9 |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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, `+ Y; B, \/ J f; r' ~3 W' V( BTCP/UDP 1433-1434 (ms-sql)2 n2 X o5 ?( j- J3 F, h
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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