 鲜花( 87)  鸡蛋( 1)
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之前发过一个帖子有关Telus, Shaw 的比较, " S E% x+ y0 V, Z. V
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。0 j- p- t9 h) C
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Does Telus block any ports? 0 U {3 V& c& W; H, n U w& M. I- K! d
* }8 O+ y: L- V4 x' G9 y: HThe only packages with no blocked ports at this time are the Server packages.
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3 P8 v" J" {) n+ ^8 N2 J+ r: m9 mThe Blocked ports currently are:2 N, [( n8 _. q q
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TCP 21 (ftp)" i9 A' B% E4 ]$ L9 v
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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# N( S i+ F( ^" v" GTCP 25 (smtp)
) {! m- [9 U$ y, h1 A# L; Z% _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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) l9 P5 x3 ~, d' d7 i: w# UTCP 80 (www)( j# n: G5 q$ O/ y! \4 M
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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TCP 110 (pop3)* x7 z6 ^# F! X) z
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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( x P O0 Q0 tTCP 6667 (ircd)
: J- ]( `9 S2 R5 {! z1 Z) BCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.4 g$ N) R* F, m7 `: M4 h
+ W) m% P2 @: H0 O$ U+ z7 G8 q& GTCP/UDP 135-139 (dcom and netbios)
! |" X. B2 Z% G5 }8 w% M4 |. gThese ports are commonly exploited by worm viruses:
6 P" t! w2 n7 }135 Windows RPC
. [0 F( I9 a) H) f- V$ D( {" B136 PROFILE Naming System (basically unused)* d! F9 k- q& `% H! r; L, `
137-139 Windows NetBios" K# E( q- R3 U! O
& S4 @, h" W* U! P h8 G$ GTCP/UDP 445 (ms-ds)
" g5 F1 a& |) ~/ u! 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.% ^- D" v; t: m1 w3 }/ i' m
8 v- L, S/ l% x8 e+ y0 qTCP/UDP 1433-1434 (ms-sql)
, |) C6 r8 D3 B1 N5 {9 ~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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