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之前发过一个帖子有关Telus, Shaw 的比较, / W& g' E% L7 A6 l. ], K- r. S- c
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? 3 K) D& ?0 f; ^
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The only packages with no blocked ports at this time are the Server packages.
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1 Z7 v) B7 c8 q- g4 AThe Blocked ports currently are:" q; p/ |9 Z- O. l9 f1 P- Y
4 a! I, q* P0 A+ R" BTCP 21 (ftp)3 Z) F8 d" y9 L# v4 r
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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; N. w2 X6 c8 |7 hTCP 25 (smtp)* I7 I& G4 n: v! I1 {. ~
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.
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7 z! e; z: `3 l# ^TCP 80 (www)
& k$ R h3 l. F* y6 i$ D4 E4 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)
/ e9 t2 O) V1 B5 qCustomers 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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/ s5 E2 G2 n9 lTCP 6667 (ircd)# r9 [$ p' e$ _) u4 s p
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.+ }5 ~7 C6 f5 S* \+ \2 O
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TCP/UDP 135-139 (dcom and netbios)' Y5 t2 @2 k9 Q$ A% Y% T2 |
These ports are commonly exploited by worm viruses:! z8 N) t8 `' t+ ~8 j
135 Windows RPC
4 J z2 h* z2 m ?( f/ A136 PROFILE Naming System (basically unused)% {2 Q/ Y5 m0 O
137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)8 e+ r. l4 F6 R4 ^' s/ u
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.: p2 V! C, J& Q+ V6 r9 U
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TCP/UDP 1433-1434 (ms-sql)0 v$ h9 T5 z M. @% J2 g8 T
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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