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之前发过一个帖子有关Telus, Shaw 的比较， ) ^3 \% |! O. y
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。7 [ v2 P/ D; V- n( [
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Does Telus block any ports? # Z' G( F d0 `4 r: z+ C
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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:: | E1 Q) M3 r1 D
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TCP 21 (ftp)! Z* F% y3 d2 ? H0 S3 N' V4 Q+ y# l
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.& D! K) F/ q+ {: f6 U" I, J
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TCP 25 (smtp)7 r- O' h0 \* h" T( [
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.. }3 w. o. z3 ^( H; q# `4 J, Z
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TCP 80 (www)
1 u j% r2 b, z! n0 vCustomers 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)
" Q4 n- j( l) ?3 E2 H1 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.
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! q: q: @; Y0 Y0 vTCP 6667 (ircd)$ S9 z; Z' H# L% L: U6 O8 K
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.3 @0 Z3 a: I2 R$ t1 L1 f1 C
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TCP/UDP 135-139 (dcom and netbios)- O) f& ?0 p1 N" f' _. n
These ports are commonly exploited by worm viruses:
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136 PROFILE Naming System (basically unused)
& I% U& ^3 V: h9 ]* t. X- |137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)
" K4 n8 x5 K9 e* X: fMicrosoft 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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$ _' }- _: J8 DTCP/UDP 1433-1434 (ms-sql)$ e% f9 s* q! f
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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