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之前发过一个帖子有关Telus, Shaw 的比较，
' S+ t' R3 s% m- l8 G# 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。
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0 i1 L, i- C3 j- m, @Does Telus block any ports?
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; u9 t( Z' f1 }' ]The only packages with no blocked ports at this time are the Server packages. " g, h# H2 w: g3 b, j7 c' U1 W1 T' q) _
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The Blocked ports currently are:
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TCP 21 (ftp)0 h8 ] M. e9 F. J- T
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.8 }' x- _, }: ?3 X& W/ h) P
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TCP 25 (smtp)
+ K3 p K P: W* HCustomers 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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/ J9 E$ i6 m) T6 iTCP 80 (www)
+ J1 U% \5 b; N7 f0 z; NCustomers 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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- u. W( o8 w$ p* D$ w3 BTCP 110 (pop3) q% f0 _0 t B3 \
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., F) ~* k e! t" }7 X, X% m6 q
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TCP 6667 (ircd)
; d. Z( b9 C0 o3 Q% t# XCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.
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' b* ?1 r+ C$ I9 [5 o6 A4 fTCP/UDP 135-139 (dcom and netbios)
. d4 q" k; t2 f) zThese ports are commonly exploited by worm viruses:
6 K9 _& G0 k) `135 Windows RPC2 p* P9 I2 D: D& T' \
136 PROFILE Naming System (basically unused)' y! Z+ J0 |8 e: f. S/ O" |' x
137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)7 m, i0 r! j. o2 J! y7 l
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.6 f/ u' w4 f) v4 x
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TCP/UDP 1433-1434 (ms-sql)0 U: P7 t7 r. i2 L* i; b
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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发表于 2009-11-7 17:58
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