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之前发过一个帖子有关Telus, Shaw 的比较,
# A% q+ e( x3 }, N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? : @( n8 r+ Z- F5 [4 _4 I* i1 I
' _% u# V% y' D; I% H9 l+ u6 X5 JThe only packages with no blocked ports at this time are the Server packages. 0 p0 S" @( s6 E, _. I/ H% g
* C7 I+ ]. I! E' B* c1 ? F/ P4 R2 ?7 VThe Blocked ports currently are:5 ?: D' f. b3 Z; r9 ^) n
) z9 G0 M. _- ?; O" |( YTCP 21 (ftp)
/ H) B% ?" V6 z t0 O {( u) [" KCustomers 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)
4 e* l1 i# e% p6 ~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.7 _: p* h6 K+ c$ r
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TCP 80 (www)
% h6 U. w' h1 Q$ dCustomers 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.5 \$ N" [& j! f" R
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TCP 110 (pop3)5 a. s2 Y( a8 M
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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, V4 x, e) A( O- ITCP 6667 (ircd)- k4 `2 T! b! q3 q6 r; Z0 |
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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! @' H+ u( T! i7 L2 b& `TCP/UDP 135-139 (dcom and netbios)+ [6 |4 N9 [1 d6 U( Q
These ports are commonly exploited by worm viruses:. o0 d, G1 U& y! G
135 Windows RPC% S/ F+ z" B e1 P/ z& d
136 PROFILE Naming System (basically unused)% [& h" [& ]- V% ~$ [
137-139 Windows NetBios- k# `) _, I7 K
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TCP/UDP 445 (ms-ds)
7 }0 n) o/ x: b" i& R# I* wMicrosoft 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.( D0 y* f% E$ Q4 s4 ^. U
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TCP/UDP 1433-1434 (ms-sql)# _4 \3 D5 {- U& ^: 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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