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之前发过一个帖子有关Telus, Shaw 的比较, ( x* }/ i, ^* ]" e" f9 G' @
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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0 I- j$ w: p# Y l _! `Does Telus block any ports? $ N# ]' ]' M1 m
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The only packages with no blocked ports at this time are the Server packages. " U* L, |5 k% E% j3 v2 D
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The Blocked ports currently are:, ~0 q; v% d' ^6 o; f5 S9 V7 r
8 C) d O9 e5 zTCP 21 (ftp)
- R, |6 \7 z/ o4 z3 dCustomers 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)
5 h( ]3 ^1 H e' p! G" v" U' `* QCustomers 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 m2 o6 n; y3 _% w' M
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TCP 80 (www)
; v U4 i- \% s' ?8 O+ E H. k NCustomers 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.0 f# ]8 w2 J: F( v# ~0 ~, A" p
; {( S7 W; T2 [7 G0 \& r! m: r' }TCP 110 (pop3)0 ~1 u1 ^' v; I% m0 W1 f7 K9 l( [0 }
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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) Y6 V, H, n2 @9 | U5 l& x5 @TCP 6667 (ircd)8 @, @& l( ]$ \, ]" R0 g7 l+ i( E
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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TCP/UDP 135-139 (dcom and netbios)- p% X' J8 S2 k* S0 {; z, b d
These ports are commonly exploited by worm viruses:$ {4 {) L- b: R0 Q; E1 }
135 Windows RPC) ~2 x# ^* n6 @# Y+ [1 j& ]7 m
136 PROFILE Naming System (basically unused)
* G9 i/ D, W4 I0 h7 D5 O137-139 Windows NetBios6 s! y/ Y- G: E& {
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TCP/UDP 445 (ms-ds). d9 L6 ~1 c+ z2 Y( f5 d9 L$ q9 T
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.
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0 a! K0 @: x, Y* zTCP/UDP 1433-1434 (ms-sql)5 M5 b) {- ]3 f9 {# E3 i" [
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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