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之前发过一个帖子有关Telus, Shaw 的比较，
- G& ?& g# P$ ?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。% o% C+ @/ k' Q4 V
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Does Telus block any ports? - p+ [ r0 @% U4 H2 a
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The only packages with no blocked ports at this time are the Server packages. / S/ c& S* N& Q* k# K: _( r* ^
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The Blocked ports currently are:+ f" t! b3 `, T4 Q6 T: ^! |
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TCP 21 (ftp)
& h* ^, T/ V8 |$ 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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TCP 25 (smtp)
# W5 k7 k, Z1 \; a+ ]7 \# c, qCustomers 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)" } k) t( Q5 Z0 Y. }" j* F" w
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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( [$ ~" q5 Z, H' S' F D, ZTCP 110 (pop3)) m" A) W& I# J- q! S3 m }
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 N: G) B2 f; N. L+ v/ d B' J7 W
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TCP 6667 (ircd)
( q/ p4 f9 s+ zCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.# F8 K& V) A" i0 s$ V ~' S8 ~! Q5 ?. B
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TCP/UDP 135-139 (dcom and netbios)7 q! ]/ O" }/ ~: U) |/ L0 t6 A
These ports are commonly exploited by worm viruses:
( E1 A' \ z: w( X7 w0 O135 Windows RPC8 @9 ^ Z0 p+ N6 J! |
136 PROFILE Naming System (basically unused); r, w% O" t, z% v
137-139 Windows NetBios2 I' @8 q! X! f- I# ^+ e- {
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TCP/UDP 445 (ms-ds)
. M) v( o; q& m% M( a4 a" 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.
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TCP/UDP 1433-1434 (ms-sql)
' Z1 ~! G) S- B5 y+ H3 T0 M' KMicrosoft 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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狗仔卡
发表于 2009-11-7 17:58
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