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之前发过一个帖子有关Telus, Shaw 的比较, , `1 }$ i% A! c6 X) N c: c1 S
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。) r. w, ? N. ^
4 c2 W& y J$ J5 x) E" T. m( \Does Telus block any ports?
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3 q! [ s+ \, Y! j7 tThe only packages with no blocked ports at this time are the Server packages. ; r9 [& D' u& L: q8 I& y
" ^7 S2 Q" W0 W" X8 \6 p% FThe Blocked ports currently are:9 @; A' `) }% E
' j9 ?5 D% ?( }! q" ?8 ~TCP 21 (ftp)" y. }. {' f/ w; R, v
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.# d" r( |3 w9 X# T+ X$ A
6 u9 R. W. a( l. oTCP 25 (smtp)
) Y9 t6 n/ y o1 VCustomers 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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9 J' F) Z2 U7 m8 iTCP 80 (www)" h3 t' | P$ a2 j5 o4 ?, o
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)
4 Q6 o# H7 [& _ A5 @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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9 @2 U7 T" m' C; G4 ]TCP 6667 (ircd)
5 M( r, J; U; f" A$ aCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.
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; F/ Z& ^+ Q9 xTCP/UDP 135-139 (dcom and netbios)
( T M5 {4 U t4 i ^These ports are commonly exploited by worm viruses:
4 N1 }, u; ?7 B* S- M) i# n135 Windows RPC
' b3 A9 E+ |2 z136 PROFILE Naming System (basically unused) |. X; s0 B/ {& G1 r/ a9 c" S
137-139 Windows NetBios
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% N" r; ^' |8 [8 d: ETCP/UDP 445 (ms-ds) i" y) X7 \3 V" M" e
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.: T3 L0 q' C' N l6 n8 O* `6 Y
1 v+ N8 O2 V1 G5 VTCP/UDP 1433-1434 (ms-sql)& R; R1 e7 G, @; N
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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