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之前发过一个帖子有关Telus, Shaw 的比较, , |# o [3 D. o% ]
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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' s- B0 h9 H( K* L c+ e$ P) wDoes Telus block any ports?
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The only packages with no blocked ports at this time are the Server packages. . V8 j& g6 k3 C+ |. ]
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The Blocked ports currently are:
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TCP 21 (ftp)
5 V4 p8 O+ o2 w+ `. S" _3 u8 vCustomers 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)$ B1 W7 F5 q; V; w" H9 ?
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.7 `, s( R: A$ g8 d0 E# b
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TCP 80 (www)! f$ K* t' |$ U$ p5 v9 T! \! H
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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TCP 110 (pop3)1 V t9 a4 u# L0 [( a+ z2 i/ K) z
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.7 |5 b8 n4 l; ^- M5 q
! i. H, U/ a- _! K* OTCP 6667 (ircd)4 k: D! D! q" w/ U0 [2 j. d
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.. k# ]. K7 {2 ] A: ~
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TCP/UDP 135-139 (dcom and netbios)
2 t; w! ^( t2 b+ w9 JThese ports are commonly exploited by worm viruses:( U) ]$ U/ o ^
135 Windows RPC! y6 Z2 {7 E8 ^! {5 X& _* o
136 PROFILE Naming System (basically unused)
: J) i* Y/ |& f. r137-139 Windows NetBios: p& F" C& L' J% v
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TCP/UDP 445 (ms-ds)
- t( M& [1 E3 Y/ s" `7 rMicrosoft 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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! m% l, G* C% k: d" u1 BTCP/UDP 1433-1434 (ms-sql)" g; Y9 X7 Y1 W7 m* N+ t
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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