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之前发过一个帖子有关Telus, Shaw 的比较,
/ V1 V1 B& e6 O( U( h% 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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Does Telus block any ports? 3 F/ ^1 R# i8 ]0 l- n& Z" V1 ?
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The only packages with no blocked ports at this time are the Server packages. 8 l9 N, M$ S5 t- j9 M" z8 I
% p i/ t9 G8 b% c$ n, u% r3 uThe Blocked ports currently are:1 f. R- X% K' R
2 @7 o) W, [0 G. V, e t yTCP 21 (ftp)6 [0 c7 _$ U) y. V2 J
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.
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f. r, j* S; p6 b# G0 |! lTCP 25 (smtp)! ~) h% N% v W5 v5 S$ W h
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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TCP 80 (www)
; `- m8 q4 u$ t9 E- Z6 F8 U- P) bCustomers 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.+ M5 I( p0 Y# X# N! ~& I
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TCP 110 (pop3)4 c; K) A2 C" V; @) D( G: U
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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6 Y/ A) K' |. B( c" {* V% E4 CTCP 6667 (ircd)
& D; f' E8 t H, n# b& V* B8 CCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.- ^ s: S# E( [$ e) ]# F6 g
! G0 F& r# n" Q+ ETCP/UDP 135-139 (dcom and netbios)
( x# A( o" I, qThese ports are commonly exploited by worm viruses:
% x j& B0 ]5 z( N. i6 f1 S135 Windows RPC
5 H; ]. `5 n0 s# o. I136 PROFILE Naming System (basically unused)! M* V5 K, Y6 b9 L( ^
137-139 Windows NetBios
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TCP/UDP 445 (ms-ds). o9 T P: B, i, t, B4 |, I% 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.' K3 @5 H" x2 k1 n/ p& J
3 W8 `( F0 w& W5 R+ wTCP/UDP 1433-1434 (ms-sql)% O# l1 i; ]/ }" f- s+ E
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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