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之前发过一个帖子有关Telus, Shaw 的比较, 4 u: l' [) b% P9 s! F) [4 L( P
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? * `& j+ P9 K) Z0 p
$ |/ ~5 f4 D) T: yThe only packages with no blocked ports at this time are the Server packages. ' O1 y& I) s4 Q; u2 X" ?
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The Blocked ports currently are:* v a5 m% v9 X" Y- N
& [ V9 ]# S0 w$ r4 a1 w8 n: R4 vTCP 21 (ftp)! |: k9 i3 o6 T2 g% ]5 N
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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TCP 25 (smtp)4 }# m N Z, k- ]2 n9 S. l% D
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.! G0 C! z& {* _- M
: Y& ]. ^" n {3 |- u4 [TCP 80 (www). t8 F8 b: f: B# X1 T5 d
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)1 Q5 K7 w$ y4 _
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.& C, K7 ], H* n& `1 N+ t
0 j* @+ b! j- T' E. G3 a' PTCP 6667 (ircd)* j& v' @ j) S' T9 {- \
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.
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9 J3 g, L; i8 V zTCP/UDP 135-139 (dcom and netbios)1 ^- _# u& c$ n; r) j
These ports are commonly exploited by worm viruses: J1 E& a- N" |* L: F) S9 e+ T
135 Windows RPC
) ]& X5 K9 B' N- O136 PROFILE Naming System (basically unused) Z, F3 P3 d3 g( `& d% |1 V
137-139 Windows NetBios
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- U9 @$ U- w9 i0 HTCP/UDP 445 (ms-ds)
: E2 Q1 X. R: U/ w' K8 @1 \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.3 P! I$ z4 ?' a4 a
- ^0 s. ?& f' Z& j8 f' @TCP/UDP 1433-1434 (ms-sql)
, \2 T9 e3 \6 {1 n5 b7 p5 K" _- I0 BMicrosoft 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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