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之前发过一个帖子有关Telus, Shaw 的比较,
0 j& u% a/ P2 R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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Does Telus block any ports?
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2 p2 v9 ~& {4 m: V9 w2 f6 vThe only packages with no blocked ports at this time are the Server packages.
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5 Z5 v5 T, V% Z1 O5 ^' [7 jThe Blocked ports currently are:) y, W) ]- V. ]# }* d2 Y$ L
+ n7 u4 s. R6 E2 J6 qTCP 21 (ftp)
+ J; o9 A/ r& o* v+ 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.9 @6 s+ i+ }$ C+ T7 z
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TCP 25 (smtp)
7 b% g( V4 J9 SCustomers 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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2 T, J; E8 I: W5 h1 F6 Z- P1 OTCP 80 (www)' q* ~, O. B- R
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.- L6 |- C$ F+ C, a% |* H8 `+ l3 T
/ |4 d! E8 [% ~- f8 vTCP 110 (pop3)
/ {, N( \! f6 ^' OCustomers 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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TCP 6667 (ircd) _6 r5 j8 R0 x# L7 @6 ~; Q
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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+ @( W- d3 @" d. V+ E. a8 WTCP/UDP 135-139 (dcom and netbios)5 ?+ G, w" G7 a
These ports are commonly exploited by worm viruses:
6 T9 n2 D F9 v8 R4 W, i; Q135 Windows RPC+ c E' F6 y0 ~
136 PROFILE Naming System (basically unused), z, R# T% v! z4 c. u, U
137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)# P2 U9 f' J- {0 \- L7 E8 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)
9 M8 @$ h; a: ^/ f6 c) N VMicrosoft 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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