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之前发过一个帖子有关Telus, Shaw 的比较,
+ @& w( i& f* V; m) I: q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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% R2 Y, y8 @( z. i* cThe only packages with no blocked ports at this time are the Server packages. / S- N* \0 ^/ C6 G. V# }
8 G* x4 n1 F1 x3 e8 R8 wThe Blocked ports currently are: i, s% r) r# A' o+ K
! h4 z, l2 f( ~9 T0 `% e* M n6 [TCP 21 (ftp)" E7 @' \" l! D/ S
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.
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TCP 25 (smtp)8 _ q8 {) J) K7 g
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.! i0 G4 C* M2 H& Z
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TCP 80 (www)' d" B8 F. c+ ]2 j; g/ U! g
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.
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TCP 110 (pop3)
6 s+ E# N: X/ L* m- zCustomers 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.6 O4 K: z4 A* Q# g* E6 K0 Z4 s) v' N# e; C
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TCP 6667 (ircd)
! k# C; y! O$ D9 BCustomers 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)
% E4 t& V) B- m6 C3 O0 S/ u* RThese ports are commonly exploited by worm viruses:
/ u2 n. c+ l* I! j135 Windows RPC
' Q4 a. X4 c9 Z: M v136 PROFILE Naming System (basically unused) v+ x: _. M+ u
137-139 Windows NetBios) b! @7 D+ i+ ~+ ^' b1 q) g
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TCP/UDP 445 (ms-ds)& c% T0 [& M; [/ y2 O" O) T+ [2 r2 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.7 f! C9 z9 A/ X( s
2 m$ w; u: A j6 M" _TCP/UDP 1433-1434 (ms-sql): F% u# C: a3 H3 l6 M }, c
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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