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之前发过一个帖子有关Telus, Shaw 的比较,
/ x: ?- F! F1 H* O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。7 K5 k( C1 d% G2 G, M: p% l
: J* P9 q9 E' i: |: @! w0 K5 lDoes Telus block any ports?
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The only packages with no blocked ports at this time are the Server packages. 5 o" w2 p+ B2 [; c( g5 G0 O9 u
' I7 N4 O4 v9 {! X4 ^3 TThe Blocked ports currently are:
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# Z5 y m& a. w$ t7 Z! sTCP 21 (ftp)
) [3 w4 H7 t/ M* {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.& l z- i- e( N
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TCP 25 (smtp)" e/ Z$ i0 o/ T5 }9 L+ X5 q
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.) D. Q" T1 s$ K$ W3 T
6 W3 N+ _ _7 U0 x. GTCP 80 (www)
/ v( ^( @- \, F# X* y9 ?- aCustomers 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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' ]! k9 Q/ s! cTCP 110 (pop3)
. d; W+ g+ R9 I* F$ X A* H0 P! p, XCustomers 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.6 ] ~1 T5 G: g0 R
" l& O: t% G4 f, F0 o. Y& P" QTCP 6667 (ircd) M3 W) v! o/ n% Z
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server./ ?- C/ H3 A' j1 m1 ^: s6 ~
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TCP/UDP 135-139 (dcom and netbios)0 r9 s- j8 s) E. a
These ports are commonly exploited by worm viruses:
+ B9 L) [6 u' B, D135 Windows RPC( a" q# C% ?7 c# n; E; `
136 PROFILE Naming System (basically unused), C$ L' B: i9 M
137-139 Windows NetBios
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$ w4 B/ i, H! V w* { PTCP/UDP 445 (ms-ds)1 Q- \& M8 x( e3 \9 B0 c) L
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.9 t/ `& Q! ^- l- t$ Q
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TCP/UDP 1433-1434 (ms-sql)
|4 f. c7 P! ~4 fMicrosoft 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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