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之前发过一个帖子有关Telus, Shaw 的比较,
& O4 g$ y! X! S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。3 q0 ]& U A1 ]$ b3 p
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Does Telus block any ports? ' R' K1 O# B! W$ G5 ?2 @: v
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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:
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TCP 21 (ftp)' U9 ~' R% b! K+ W: Y+ c
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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" S# `: d3 }/ A/ B; zTCP 25 (smtp)$ i- L7 L2 F, I; o0 i& K7 D0 p
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.& }1 D, n) ~/ r: c' d. x
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TCP 80 (www)' H" G/ x3 m6 X. [
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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9 y3 Q: s5 {. gTCP 110 (pop3)
$ z+ I, G% k9 V7 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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7 ^2 \2 w9 @$ j& Q* m% t. L( |' }" oTCP 6667 (ircd)
8 _' u% [/ G$ q8 M$ fCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.
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; w3 L8 h4 b' l2 n" J2 R; MTCP/UDP 135-139 (dcom and netbios)
0 e+ I4 }6 r2 N8 w% a9 a* uThese ports are commonly exploited by worm viruses:' x2 |1 O! @1 j8 h" ?
135 Windows RPC0 _9 I; G5 K. |% I, U
136 PROFILE Naming System (basically unused)
" D" R$ {* O, g" O0 S0 R! r137-139 Windows NetBios9 V0 m, y; u+ _/ a# K
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TCP/UDP 445 (ms-ds)$ a v$ D1 {# l& ^0 s5 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.# B) i2 `4 a! B- \" h
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TCP/UDP 1433-1434 (ms-sql)
$ r. S4 z) `* y- y$ M" t+ UMicrosoft 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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