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之前发过一个帖子有关Telus, Shaw 的比较, 9 M3 F9 M/ A, r b" D6 W
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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Does Telus block any ports?
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1 j3 T2 |1 k, gThe only packages with no blocked ports at this time are the Server packages. ?. T" s5 I6 {: B
# x) ?0 o0 `3 d6 |3 SThe Blocked ports currently are:
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' ~0 B& [8 z: o- |6 FTCP 21 (ftp)
2 z) u7 N6 y/ M2 YCustomers 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.; G S& R; I# D# o
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TCP 25 (smtp)
3 Q% w; U, u* x; _" B/ \, f0 GCustomers 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.6 S2 ~; e' i/ w# N$ Y( P/ M
; ]9 v' W! R- u2 p' @TCP 80 (www)
' O& P9 r9 W1 Q' O2 X& 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.' `! C; i7 C/ U# ]( o5 p+ G
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TCP 110 (pop3)
( z* N: [0 P. |) |* 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.& }. T2 b0 u( k. W( e/ p; |
5 r% Y' f: H, x6 ITCP 6667 (ircd)
6 U( K8 J' B h# T. tCustomers 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)
2 S; b4 f# N, f6 A; m0 \These ports are commonly exploited by worm viruses:8 V6 ~* v! A6 y/ q
135 Windows RPC
* ~9 [: |# c9 \. D6 q1 a9 n136 PROFILE Naming System (basically unused)! m t- w3 \2 q ~% ~
137-139 Windows NetBios' b- ~! ]$ d# y
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TCP/UDP 445 (ms-ds)
% w; _" w7 `5 z2 R( o& hMicrosoft 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.' {" @: T( o+ s' F5 j
+ _- n( ~; u8 H) VTCP/UDP 1433-1434 (ms-sql)
; F0 b3 l! k6 o M+ v' H$ F9 pMicrosoft 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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