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之前发过一个帖子有关Telus, Shaw 的比较,
5 Q& i, Y7 U* B9 H/ _7 a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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^) ?% L/ N2 r: W5 z. vDoes Telus block any ports? ! |$ P# @6 v3 L; o
7 N3 ?! M& D9 g% j; @The only packages with no blocked ports at this time are the Server packages. " V$ ]. ~. ^7 E( h4 s- P4 X" @8 F
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The Blocked ports currently are:
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TCP 21 (ftp)0 F1 D0 K* m# ~8 J3 O) 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.
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?5 q# U8 O* Y( \TCP 25 (smtp)4 n5 e. S2 p! K
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.. k# g+ x9 _! I |- V5 p7 ~
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TCP 80 (www)
9 c6 i- T+ }) m8 XCustomers 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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& b4 `2 `# |1 \2 Q8 vTCP 110 (pop3)# F) C# X. p, }1 c8 F
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.4 l' j) J: Y. W/ c
! L% ~) a' |2 r3 C0 a0 ?1 u% t/ XTCP 6667 (ircd), A I. O, b; ^6 q$ w
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.3 h6 u3 Q- `) X6 y
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TCP/UDP 135-139 (dcom and netbios)4 n' U( v8 T0 u5 \" e, ], X7 D
These ports are commonly exploited by worm viruses:: ^9 q1 h d7 z5 i$ r3 `
135 Windows RPC
! D1 I+ b! g2 h0 p3 e1 [4 ^136 PROFILE Naming System (basically unused)
- L( f5 } y; i7 s9 b137-139 Windows NetBios) E8 t. ~5 l3 G, \: ~
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TCP/UDP 445 (ms-ds)0 y$ c9 |- I5 }9 P& w1 ^) T1 d: v
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): R( o( j/ B: x' N3 N4 x
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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