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之前发过一个帖子有关Telus, Shaw 的比较, ( h, M* @, a" |0 S& ~* |/ 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。) o |- N3 Q, a
! N: o, [; P6 E2 Q; r) k# \Does Telus block any ports?
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9 e( G! Z7 P8 h/ m6 xThe only packages with no blocked ports at this time are the Server packages.
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- J9 x; C1 _! p KThe Blocked ports currently are:
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, z. L8 s) _; @# J1 {5 ~ I! RTCP 21 (ftp)
! [7 V3 C* w8 a zCustomers 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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5 T6 j$ u1 I* V/ X2 ?; S3 a" @9 xTCP 25 (smtp)
8 W3 Q) N4 w+ [% qCustomers 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.* d; B6 b2 `% ?! f9 C& {
) Q8 q V( e' i/ c, eTCP 80 (www)
e1 E2 G/ A& F( G- Q7 u0 RCustomers 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.$ D0 K6 D) A8 e# R" V* z
% Z1 W; O0 a3 E+ w2 kTCP 110 (pop3)2 O; ]1 S! w1 Y1 Y; @
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.: d* S7 I! @3 l4 ^/ G
* T/ F- j: `2 ^TCP 6667 (ircd)3 g# `0 ^& s' [
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)
& X- K6 q8 F5 u3 _These ports are commonly exploited by worm viruses:# R ]2 h4 f, T: S
135 Windows RPC1 `7 u @ p+ _$ `1 j
136 PROFILE Naming System (basically unused)5 X# m+ |% q) @8 M. |0 W, A' a
137-139 Windows NetBios
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" S4 ~5 y& b z8 O* G, @; GTCP/UDP 445 (ms-ds)' y; \/ | |' d# c1 I+ ]# 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.
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TCP/UDP 1433-1434 (ms-sql)7 Q; l4 u4 r" z$ w$ K
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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