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之前发过一个帖子有关Telus, Shaw 的比较,
: p k V' L+ W* V! V* }& x7 Y+ c# s9 i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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The only packages with no blocked ports at this time are the Server packages. 8 b1 u& a& n) |, v9 r1 p
7 s S; n- {! j/ Z6 y$ c" H6 nThe Blocked ports currently are:6 d4 u& ]" p! ?2 k& |% `0 u! b
2 s0 H$ @, i6 cTCP 21 (ftp)% w/ n l3 H9 o+ N" ?2 C, V
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.- U# @6 F3 l3 J
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TCP 25 (smtp)
% O/ p/ z: V: q e4 FCustomers 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., {( A: l7 o' F% j8 E/ {9 W( _
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TCP 80 (www)7 ^: E3 X+ Y0 v* {1 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.! k ?7 k' m# h. O5 T: j! W0 S
/ S) G/ z% X& S H! P6 sTCP 110 (pop3)
2 h r" z. ~! v+ DCustomers 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.
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3 R K, h$ m% hTCP 6667 (ircd)$ L- @. ?+ {, T j! s6 P
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.4 h( T9 R6 ?# k' S% l3 L" S
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TCP/UDP 135-139 (dcom and netbios)
. \* M: w2 O1 V4 a$ P% fThese ports are commonly exploited by worm viruses:) J$ f3 g: T4 Z# H
135 Windows RPC" A$ v" d2 t3 V, t, m
136 PROFILE Naming System (basically unused)
/ g! s3 t) ]- `* f# f" `6 N137-139 Windows NetBios7 w, D: C* {1 I4 v
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TCP/UDP 445 (ms-ds)4 M6 k( ?$ n, u2 o- x. k
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)( ~5 @$ z( O# W& p* U1 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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