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之前发过一个帖子有关Telus, Shaw 的比较,
$ p. o) u- [6 e) J' J; I0 e7 L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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The only packages with no blocked ports at this time are the Server packages. 4 u; L f' U" q+ N9 e5 k
- J5 E: `. \+ J! S& q6 n( L: J! gThe Blocked ports currently are:
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TCP 21 (ftp)1 ~* d S' [* R2 V7 Z! b+ s
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.* a: g' E: B. G `3 G0 g- L
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TCP 25 (smtp)
( X- q' o- } a) ~; W4 H+ RCustomers 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 {- [ H" N; B1 S* E
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TCP 80 (www)* b$ x! Z2 l t) W/ u
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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& S# A8 G3 f- p" Y: yTCP 110 (pop3)
- i f5 q1 y2 ~7 G0 O( Q8 O! S# L: 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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TCP 6667 (ircd)
9 ^1 ~$ H* X. a( u* q% i$ d4 |% o6 ECustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.. n7 K: z& L% B! ~7 ?
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TCP/UDP 135-139 (dcom and netbios)3 Z2 m% A+ z. Z8 B8 F+ l
These ports are commonly exploited by worm viruses:
; n, G) g# E& m: s, N* f9 J135 Windows RPC
% l% M5 M& o/ X) l5 w* _. }( t136 PROFILE Naming System (basically unused)4 F/ A' n8 Y6 b# G8 W. c
137-139 Windows NetBios! S9 u4 F z- Z, B/ K& q- i
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TCP/UDP 445 (ms-ds)
; d: _# y. U0 F7 bMicrosoft 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.& f! F8 O# ] o
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TCP/UDP 1433-1434 (ms-sql)$ d5 N( R2 h+ n/ o. j
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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