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之前发过一个帖子有关Telus, Shaw 的比较,
5 ^9 V+ U. [' x# f/ e9 N5 n, u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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8 K. ]5 _4 T$ E- D) d9 n; eDoes Telus block any ports? " g' I: Q" ~) Z1 ~7 [) Q- i
& V' q; l' I; pThe only packages with no blocked ports at this time are the Server packages. ) y2 }3 C T: a" ?! [' F2 i/ R
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The Blocked ports currently are:( e& k# o! `2 [ \& G
# [7 s# j+ a4 ITCP 21 (ftp)
2 x3 L5 j& e5 j+ `9 a1 B2 eCustomers 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 ^, k# A% z, w
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TCP 25 (smtp)
5 U: C) ^8 K9 z% ICustomers 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.. B9 E: Q. h3 _6 @# t4 S. G4 T4 z
6 H0 M% e2 f# N2 WTCP 80 (www)
9 a% ~9 a- X5 e2 A" L. X6 {9 e% g9 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.; B- C" p G6 \0 [& r5 Q
5 Z2 k/ n* F2 R% o0 i: W' hTCP 110 (pop3)
) P# S1 T- O( r- `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.% X/ ? n2 k. r
5 K! Y- z# X. _$ VTCP 6667 (ircd)
8 C. U7 Q. D5 E7 a/ b; @Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.& s/ M- c# ~1 a( W3 X3 H
0 i) `; t. I q) TTCP/UDP 135-139 (dcom and netbios)
/ O: |9 \& C3 J+ AThese ports are commonly exploited by worm viruses:
2 F1 S9 f$ u% n+ r6 H135 Windows RPC; r3 I) w# ]) b& Z4 j. N
136 PROFILE Naming System (basically unused)4 n! G# v+ l6 ^/ b
137-139 Windows NetBios
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TCP/UDP 445 (ms-ds) i4 v4 }% Y, f, ]
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)! L. @; h [/ ~- h; L, |
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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