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之前发过一个帖子有关Telus, Shaw 的比较,
& e; U" v3 u( v6 M5 _4 V' @1 D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? * ]- Q" ^, N; A, a( L3 R
( S& M4 [5 |5 N% N! P! ]5 SThe only packages with no blocked ports at this time are the Server packages.
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& c: o9 K7 _7 ^- |# GThe Blocked ports currently are:
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TCP 21 (ftp)
/ h0 Q5 D6 _1 m0 o; v) 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.1 H G; O( E8 I& P
; R5 i# |' P4 L' BTCP 25 (smtp): q6 b$ D2 N# b( `+ t- ]* g7 Q
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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9 Z" b/ c, m1 L* `8 lTCP 80 (www)
" R2 j* d( q/ G: H* N0 p ECustomers 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.3 | f9 a3 b7 k% k) C" E
( w0 Q9 u# t& E4 R j. Y$ bTCP 110 (pop3)! C- l4 [' m2 c! O
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.1 l! K& w# ?4 o1 f s$ P
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TCP 6667 (ircd)+ E' }# o& u* n
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.
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8 {9 _/ L2 K1 J) STCP/UDP 135-139 (dcom and netbios)6 I9 V3 W& }$ [) i; T" T7 {
These ports are commonly exploited by worm viruses:. _" k+ V2 I. C7 m9 Z
135 Windows RPC% }! }3 P. j- D' V6 c. I
136 PROFILE Naming System (basically unused): U- l% X; W8 r/ C* O3 d7 C3 c/ K
137-139 Windows NetBios# t% \0 F2 T* m
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TCP/UDP 445 (ms-ds)
0 I! z4 e; P( S+ h Q, m5 `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)
2 a' T7 m. w) s" xMicrosoft 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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