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之前发过一个帖子有关Telus, Shaw 的比较,
' v, [: n4 F: q: d; z8 J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。 J9 {) y3 u& |
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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.
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: g/ M+ E; S& Y- jThe Blocked ports currently are:
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TCP 21 (ftp)8 J0 D7 x1 K# `+ k) {
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.$ Y' e- j$ a: h" \
3 k O; B2 @9 X. L) ~TCP 25 (smtp)
, P, h9 {1 F6 ~& B jCustomers 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.' Y' {2 j8 @3 V0 C5 I) V
& i- X% I6 c/ l6 ?* ZTCP 80 (www)
+ E! C% }2 Y1 dCustomers 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)
( F2 F5 v8 B x& H* xCustomers 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.; J& l s; N$ p# B& g
0 e+ y7 E9 \: z$ ?" ZTCP 6667 (ircd)0 d, w) F: L) @; l9 P
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.9 ^$ j8 u) x2 b7 [8 ^5 ~$ R
0 t( a" Y3 N0 M: iTCP/UDP 135-139 (dcom and netbios)
' y% f" D, L& L Z9 UThese ports are commonly exploited by worm viruses:3 t0 d6 k: e; n; D/ h
135 Windows RPC9 c0 C* k3 Q' Z' j. x1 }; L! E& @+ @
136 PROFILE Naming System (basically unused)9 ?) w2 D$ @( e* v( |
137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)
+ A: z9 f% a( N3 g7 @( ?7 fMicrosoft 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 D4 d; ?/ v3 I7 ^ g& a; C+ I
% z. A. g( k# u0 @' B1 |TCP/UDP 1433-1434 (ms-sql)3 b( z2 W, R6 k# D. T# P. A
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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