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之前发过一个帖子有关Telus, Shaw 的比较,
; S9 ^3 f0 U( b. W8 T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。3 B" M. z0 }! o
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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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. y# N" [4 s/ J! z* NThe Blocked ports currently are:3 |; }* | W' W' H1 K8 S
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TCP 21 (ftp)
, }6 B) B8 ?% a5 `6 V8 c: S0 VCustomers 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.8 G* E; a7 b3 |# U) F
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TCP 25 (smtp)4 ^" O2 F& P* M8 Q5 p( F
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.2 m4 B; P6 b- G& O) K
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TCP 80 (www)
! c" O- p8 U2 {3 c5 lCustomers 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)/ u% z* E1 o2 Q( l, U
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.$ z" U# _* r3 j* ~! r! J
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TCP 6667 (ircd)
/ D. d- H* K) H) e6 xCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.% |9 J0 h5 l8 u% ^- `; N
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TCP/UDP 135-139 (dcom and netbios)
2 l" p; r$ ^& p2 ~8 y5 wThese ports are commonly exploited by worm viruses: \3 F G+ x; ^& @
135 Windows RPC
3 ?8 j8 J) s I+ H" U6 k: L$ [136 PROFILE Naming System (basically unused)
: [% y$ ~& y/ b/ a" H, y137-139 Windows NetBios
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4 y2 f n0 v' i2 v" QTCP/UDP 445 (ms-ds) |* h! P+ G# Y Y6 z- {, f. N+ n" U0 ]
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 f. l* n$ s2 ~' zMicrosoft 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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