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之前发过一个帖子有关Telus, Shaw 的比较,
- l1 D4 ^3 r' i7 L/ {4 ~! 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。5 P3 D2 }& ^) B! g# s
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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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The Blocked ports currently are:: T/ m& z# o; f. W
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TCP 21 (ftp)
. d7 L4 X$ f$ V6 V: N8 L! 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.$ F6 ]( w: L2 c
8 k) N& ?4 l4 D* z5 Q: ZTCP 25 (smtp)
: |. w; ]' v; v9 o c6 G- I6 W1 P/ zCustomers 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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TCP 80 (www)7 T0 p+ r2 ^- h' c7 |/ K
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.
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TCP 110 (pop3)
8 F4 X7 G5 }/ y1 }$ VCustomers 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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% i/ i: t9 y; GTCP 6667 (ircd)! f7 Y/ s$ c! x' R- e! B9 ?% w) `. t* b
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.0 I' K$ `. B4 H" Q
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TCP/UDP 135-139 (dcom and netbios), ~" a+ N8 X! @$ s3 [3 }! A
These ports are commonly exploited by worm viruses:8 H9 e9 b/ `7 p* v- p# B! p v
135 Windows RPC7 v B$ Z6 w7 M( X9 }! v
136 PROFILE Naming System (basically unused)5 }) m( }" W9 n2 D N2 u+ U0 s
137-139 Windows NetBios
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: z0 P7 P( V/ J' y+ eTCP/UDP 445 (ms-ds)
. A) Z7 ?* I; v' u' I# M1 ^3 X1 wMicrosoft 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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5 P0 X- ]' q' @4 K2 p- TTCP/UDP 1433-1434 (ms-sql)
( o* G9 C/ W2 GMicrosoft 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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