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之前发过一个帖子有关Telus, Shaw 的比较,
: g* K' E7 C( z# V% t; n: k- ^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。8 {) k- m; Z c( k: }
. {4 R) r" x: y" p; sDoes Telus block any ports?
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1 d2 Q6 R. p* D! I; t3 Q7 K) p' @The only packages with no blocked ports at this time are the Server packages.
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The Blocked ports currently are:
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6 [; m% }6 t3 \ D# {TCP 21 (ftp)
; y- t, c g3 kCustomers 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). Q+ Q |# L- ]
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.% S: i/ J+ I# Q* L; ]* |# G5 [
' D2 f: @, {- _4 Y9 X6 RTCP 80 (www)
/ y4 A; ]3 C. Q* X/ X; NCustomers 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)
G$ m& ], u. Z& |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. ^5 W0 V" @, ~
& U% X; T% X3 R+ `6 K( n* ATCP 6667 (ircd). b$ r: I% y+ K- B7 k8 u
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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TCP/UDP 135-139 (dcom and netbios)3 m/ ]% q% G/ a& @% H* h8 t
These ports are commonly exploited by worm viruses:
4 ^) t: L- l% h; Y5 o- x7 T J135 Windows RPC
' R/ u q4 d" H4 f$ _136 PROFILE Naming System (basically unused)5 h7 R; X7 v i" p L" A
137-139 Windows NetBios2 R% \, h) g2 X L) F6 R5 D: }; p
- y' i& r* b# ^4 |TCP/UDP 445 (ms-ds)+ i: }& Y( J- H1 N% Y/ ^
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./ p) V* ^! {1 m( `# E
' C% R4 @1 k0 c* t q. n: i0 yTCP/UDP 1433-1434 (ms-sql)
5 M' x9 N# ?1 h6 j% i! `$ jMicrosoft 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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