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之前发过一个帖子有关Telus, Shaw 的比较,
- N7 E o. r# X% ~8 a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。( Z7 k0 D1 M* |
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Does Telus block any ports? , I5 U0 x, C% h! O9 m
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The only packages with no blocked ports at this time are the Server packages. % H7 g6 w7 G! Z p
1 A3 F0 s' E( BThe Blocked ports currently are:6 S# Z: ]( e# }7 a [ O) e
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TCP 21 (ftp)- w% C1 Y3 n2 i
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.$ D4 i! Z: ~8 u" v
# m1 y4 p* c9 p8 Y% M6 C' NTCP 25 (smtp)
' t0 B" s9 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.
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) y7 z* F, X. v& g' N! | o: bTCP 80 (www)" h# l/ g8 e( D; X5 \, z+ o P
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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" G6 b1 p5 g8 ]( M2 A3 a% p9 NTCP 110 (pop3)
' i# B3 w* E* O. @" q) h5 jCustomers 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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( \' Q# w+ }3 l% I9 T4 vTCP 6667 (ircd)
, D, F, C e) d- e9 z. bCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server./ h: K1 S- H) ~; A+ u) O
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TCP/UDP 135-139 (dcom and netbios)' A/ F3 e8 A; C! V: |3 I4 q9 F
These ports are commonly exploited by worm viruses:2 E& g1 E4 X. T3 f' j& W5 T* `3 _3 Q1 }
135 Windows RPC2 x% I% ~) o8 _6 O z
136 PROFILE Naming System (basically unused)
' x0 L2 H- w% e" r1 s2 Q# P137-139 Windows NetBios+ X8 a2 x4 f0 y3 w2 B
. Z ^9 t% N$ U/ C$ NTCP/UDP 445 (ms-ds)* _% c& ~0 i2 M- U
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.( w0 I. U9 M7 u5 R" r
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TCP/UDP 1433-1434 (ms-sql)
/ b: ?7 V# \5 \+ r. W2 UMicrosoft 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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