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之前发过一个帖子有关Telus, Shaw 的比较,
8 o; h# z2 s2 [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。: {+ Y6 e/ M4 c5 _' M5 ~
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Does Telus block any ports? 2 [# [) [$ q" W7 t% P
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The only packages with no blocked ports at this time are the Server packages.
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The Blocked ports currently are:" e2 R6 j. Y& C" E) `+ q
& _0 t; a3 }8 S4 n9 |2 FTCP 21 (ftp)
$ G' _' z1 |, a5 Y0 y: Z/ _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., ?* N2 k( m( a6 @% c# N% x
1 e7 e4 @0 J8 B# y8 o+ }TCP 25 (smtp)
; h% n. u& r- M6 f; YCustomers 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 J2 R; h9 ?: G& s7 X( D. F
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TCP 80 (www)3 p$ u# R$ O3 p& I r
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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7 G2 o, Q* y1 P+ C0 W% w7 \TCP 110 (pop3)
' l' \7 I6 L1 T) {% I3 NCustomers 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.7 d J! u# s; Y* ^, m1 |4 J4 D
% ^( T0 b+ G9 p9 @TCP 6667 (ircd)8 e: q- V3 B9 n1 K/ R
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.1 P7 n: z- }2 m t
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TCP/UDP 135-139 (dcom and netbios)4 }: J9 {! z6 e. K# d/ N8 H
These ports are commonly exploited by worm viruses:
3 l' d5 N! H x) |' H135 Windows RPC' g( {4 [$ Z' n. q: F! ~
136 PROFILE Naming System (basically unused)
0 x* ], j5 d+ b& C. f! G+ H137-139 Windows NetBios& l' s& Q4 r0 Q9 v
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TCP/UDP 445 (ms-ds)
$ @! g' f, F, U+ U" l7 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.& I u) y. X# y! d+ G
) r2 l! N1 R: WTCP/UDP 1433-1434 (ms-sql) C# V/ V+ |$ O6 l% c& D* u# V# O0 Y0 [
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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