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之前发过一个帖子有关Telus, Shaw 的比较, & `1 E* W3 f. ~
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。! X2 g7 E1 o1 H
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Does Telus block any ports? 9 D- R" ]8 s2 y) ^+ U2 f+ s
! j* w$ G- Q' M4 u1 S* ~1 aThe only packages with no blocked ports at this time are the Server packages. 0 w! M# \+ V. ]: K% a
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The Blocked ports currently are:, F+ v4 C% P! e0 S# B
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TCP 21 (ftp): u3 C$ `3 r" H0 b1 }
Customers 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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9 l T/ B8 R' F0 m4 w, `8 f* w8 `* JTCP 25 (smtp)
0 }, I n9 y4 q, dCustomers 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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1 |( ~7 f& K) I: w) @* LTCP 80 (www)
' f6 s: m6 `$ E$ Z1 L1 jCustomers 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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1 [0 x" I5 J8 i% b. F' y, [TCP 110 (pop3); T& K5 I. M: ~+ k
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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+ A. s# y2 w, y0 ?TCP 6667 (ircd)/ a c' P8 z6 U" W; f% v
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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7 s: F8 l8 z1 q, a5 S6 w. {5 x3 xTCP/UDP 135-139 (dcom and netbios)3 `9 q* [" s, C$ o Y! K
These ports are commonly exploited by worm viruses:+ b+ i( b/ T, i5 V# S
135 Windows RPC/ q3 @! m% I+ }, T# S$ u+ F! ]: |1 W3 V/ g
136 PROFILE Naming System (basically unused)7 J) w, Z% C2 S7 O! ?, I) a- w
137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)
- d" h: w0 {4 V6 |/ iMicrosoft 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)) G% u, O. S0 X
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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