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之前发过一个帖子有关Telus, Shaw 的比较, * c. C! e; u% Y. g; U# x1 x5 {; z7 N
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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Does Telus block any ports?
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" Y, C6 j/ i+ C! ^; j7 N2 UThe only packages with no blocked ports at this time are the Server packages.
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B2 }. h0 }0 c/ \6 e3 hThe Blocked ports currently are:! g$ P* a/ U. J7 h) T
& @! X! x6 Y/ I$ M6 \6 n: cTCP 21 (ftp)
1 k8 Z- X9 F( c/ N; ZCustomers 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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TCP 25 (smtp)4 j# z" X' p% s8 m
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.
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: f# e1 k8 h1 g- u7 _8 sTCP 80 (www)
& i+ W& R. C) gCustomers 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)( e$ h1 R8 b; v# I
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# ^9 t5 \! u
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TCP 6667 (ircd)
9 A4 c* k) Q: e% j! d% @6 V6 eCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.
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TCP/UDP 135-139 (dcom and netbios)4 [, Y/ ?8 _& Z
These ports are commonly exploited by worm viruses:
( F `: h% z+ D" M. ]' R; H135 Windows RPC5 {5 [6 Y" e3 _+ H/ h- C
136 PROFILE Naming System (basically unused)
^, m6 V) @4 g137-139 Windows NetBios
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+ |" v4 T" \2 q& ]$ ^' V5 ITCP/UDP 445 (ms-ds)( }* C$ r" P+ g: w
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.# |! D. o+ E h' E7 A
& ^, g2 U8 D4 F1 e. p8 N; J0 UTCP/UDP 1433-1434 (ms-sql)6 I% |7 y5 l( Z, t5 L% e0 O
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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