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之前发过一个帖子有关Telus, Shaw 的比较,
2 p# X. o# [% g* x9 B ~4 Q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。% d: c, u" |4 f: \
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Does Telus block any ports?
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The only packages with no blocked ports at this time are the Server packages.
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The Blocked ports currently are:1 j1 p6 ]' | a3 N; } y( G5 |1 T
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TCP 21 (ftp)
2 Y, u; o. j8 Q/ CCustomers 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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2 ^9 I4 f4 v) w. ZTCP 25 (smtp)! p6 v( r& i8 M3 B+ E
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); U# A5 w0 A6 Q' ]" O
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./ C' A' S5 ]' ^' g% `) D/ g
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TCP 110 (pop3)
" r! J/ f2 r {$ _ B! y# }' GCustomers 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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. L# ]* T$ f- c! V7 I- c2 wTCP 6667 (ircd)
+ V7 V2 S7 X; v( K# Q, JCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.
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! I1 V* w1 @6 A( M/ mTCP/UDP 135-139 (dcom and netbios)+ T. I0 x8 h7 N2 O& j* Y8 E
These ports are commonly exploited by worm viruses:
$ M! K3 t; n6 C, @) T( n* `: n135 Windows RPC
' v# R1 F6 e) |- C136 PROFILE Naming System (basically unused)
+ E- _- N+ z2 o137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)
! N. P1 l7 c4 LMicrosoft 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)/ f: p, O0 t: U% t( z: k
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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