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之前发过一个帖子有关Telus, Shaw 的比较, 6 l$ Y9 B+ z f9 O. ^4 \
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。0 ~; N; g% ?+ H4 B3 M7 g2 u2 G
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Does Telus block any ports? ) P7 `- t0 D* V2 C( P
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The only packages with no blocked ports at this time are the Server packages.
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% N1 F( x! \) B5 ZThe Blocked ports currently are:
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TCP 21 (ftp)+ `( s1 N* [9 H' A P! b. p0 _0 D! S. A
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.# a" R3 h4 o3 r# y& y
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TCP 25 (smtp)
2 L1 y* e% I9 \: x hCustomers 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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TCP 80 (www)/ K A5 }) P8 l8 X. j" d: {' V
Customers 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.# G( `9 D: `7 n, t5 z
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TCP 110 (pop3)
/ L! t0 U& j% ^% g! ? k4 _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.7 P0 u8 W. A+ C6 c1 e
, v. \$ P$ ^$ C. g2 l1 g. sTCP 6667 (ircd)* D- K1 |8 |2 t+ W- M) B' m
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server." F' y) y# C$ V* M
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TCP/UDP 135-139 (dcom and netbios)
( d5 V- W1 m0 \4 Y: v* }These ports are commonly exploited by worm viruses:5 S8 V- V$ t$ `2 I" ?" T# x
135 Windows RPC
! i* O# B% R S* b4 c5 x6 c1 T136 PROFILE Naming System (basically unused)* K6 k) q' ^* c9 y3 |' w
137-139 Windows NetBios, K: ]* ~3 @, Y X; t7 ?7 _( c! w% Z
9 F5 y7 S" B" m. K! I- q* Y5 K0 JTCP/UDP 445 (ms-ds), @7 C& c% z% Y4 X
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./ E' x/ ]& O2 s$ c2 k+ q
7 U) K, l& S$ D5 t. YTCP/UDP 1433-1434 (ms-sql)
' ~6 Y: ]8 C, r. \/ k# G( WMicrosoft 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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