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之前发过一个帖子有关Telus, Shaw 的比较,
; g' \6 X n. C3 j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? . p" W) U+ F/ c* s5 Y& s) r* Z
5 |" p7 i0 [: h! X6 \/ c& T( c5 _The only packages with no blocked ports at this time are the Server packages. - i+ n: r' f' X% E9 N2 G
, g P$ Q# n+ o: j% t7 R2 E( WThe Blocked ports currently are:2 _% T6 I* U) j: h
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TCP 21 (ftp)
& S2 N; T% j' [. M7 d$ E, l. FCustomers 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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2 [1 F7 F; T J& y$ _3 v& TTCP 25 (smtp). L/ E. ]" L: `% F# h
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.2 W% x/ C0 J* s" ^, b) }
u8 o5 x" g' sTCP 80 (www)
) e5 U; }. Q: @+ p. i: PCustomers 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.) {+ u% g% k0 q' n9 p
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TCP 110 (pop3)& Q3 a _9 U7 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.0 z& O; A; D# P, j
* C. o% X' |. L4 y9 kTCP 6667 (ircd)8 p' p$ t, {3 h- r- M
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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1 C( g" C2 K% P! j0 K, RTCP/UDP 135-139 (dcom and netbios)+ m% Z2 {5 S/ q9 E% ?
These ports are commonly exploited by worm viruses:
* C0 x8 H% n! N0 J# P0 X9 m0 G6 [135 Windows RPC" }$ A3 g1 y: k+ {) s0 f! Z
136 PROFILE Naming System (basically unused)
" D; `/ F8 J8 ]5 f137-139 Windows NetBios" M* L2 w6 p3 L* \3 f9 b
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TCP/UDP 445 (ms-ds)/ h/ T% s5 X5 x# G
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)6 _; M& C3 S3 Z! n! Z, l9 u+ s
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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