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之前发过一个帖子有关Telus, Shaw 的比较,
8 @, S8 x' D7 R7 Q- k5 b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。* s7 S5 p1 [4 F
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Does Telus block any ports? " G* u2 w9 l" O, K9 u
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The only packages with no blocked ports at this time are the Server packages.
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The Blocked ports currently are:$ L/ P! e& m" @) L- H* k& J. Z
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TCP 21 (ftp)5 Z$ H* t' Z0 A6 }' ~8 l. C
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.& W/ S2 @3 h7 Z% l) @# W a% o
, m9 d% m5 N" cTCP 25 (smtp)
. Y9 s3 P8 O0 y* f: nCustomers 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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TCP 80 (www)
' C" J6 ~) Q: `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.7 v* o: Q. s5 e! S# b! F
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TCP 110 (pop3)
+ z) a, f7 i) d! |# n% e9 qCustomers 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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8 r4 d7 j) q3 e2 Z! y( hTCP 6667 (ircd)' |8 e7 x: k+ N) @1 o; R
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.- m7 T4 Z7 k! G& w( N
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TCP/UDP 135-139 (dcom and netbios)7 P( w2 A9 g* i- l5 F% K" e- W7 i' g; `
These ports are commonly exploited by worm viruses:5 J1 [0 }. O. ^# Z g
135 Windows RPC0 u, X o7 [ l
136 PROFILE Naming System (basically unused)9 {8 H; r4 y& X# \2 |/ ]
137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)3 _2 E4 b. S3 P o
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.1 R% K1 G- X! t. S7 L
~( A" g4 q4 TTCP/UDP 1433-1434 (ms-sql)
1 \% @6 G' r( p! ?: @ ~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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