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之前发过一个帖子有关Telus, Shaw 的比较, ( ?/ g' T: C& D+ \2 i/ c5 J
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?
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The only packages with no blocked ports at this time are the Server packages. * ]+ [: `! Z/ a
2 L: ]' ^# C& bThe Blocked ports currently are:
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6 e$ E8 [$ ?) |TCP 21 (ftp)# m- V0 D1 q9 X5 |# X# C7 X9 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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TCP 25 (smtp)
# P" \5 G8 R2 D1 G u9 I- { bCustomers 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.9 I; a8 o# E" G6 w( ]
" c: B' ~: n& K1 ~/ g# B2 bTCP 80 (www)
: F2 c, D- v2 ?4 z+ K6 tCustomers 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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$ v, D0 c u( ]% c# k, c* @TCP 110 (pop3)7 I; ^9 v- n! ^% j/ O5 V
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.
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TCP 6667 (ircd)0 J0 o2 M! W# W! r
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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% i7 [ F* F" P! H' tTCP/UDP 135-139 (dcom and netbios)
: `6 u% a2 Z4 [. m! |& u, m/ NThese ports are commonly exploited by worm viruses:
( @% c% o S. d2 Y: d135 Windows RPC
) F" ? s* [( a& a* z; `9 F136 PROFILE Naming System (basically unused)
( T8 ^/ ?3 F: R/ y3 U137-139 Windows NetBios F3 j! S" Z( h( Y6 D) ^( P R
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TCP/UDP 445 (ms-ds)+ [1 k& w6 X2 h. P. 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.* A1 ~6 j$ j# R7 Y
; V# h! S3 p5 K1 ATCP/UDP 1433-1434 (ms-sql)% A! D, w9 T: E( Y8 y( {: y
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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