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之前发过一个帖子有关Telus, Shaw 的比较,
6 a+ X# X+ @6 l$ T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。& J6 Q& C8 u$ v5 f: o% n; V
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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.
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1 Z1 q: r2 u( a$ q9 O% u% }/ m3 {The Blocked ports currently are:
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TCP 21 (ftp)
! \5 E/ e/ F: |) q Z# i5 XCustomers 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). t2 h/ N: I, q" m; X& O8 J
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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3 ?. e& \" m# S5 F9 O2 PTCP 80 (www)
% `: \: [$ K6 d9 xCustomers 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.# t6 k' B; n! `8 m. \
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TCP 110 (pop3)
1 h8 X- Q, i: {0 M) w2 mCustomers 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.8 m, D. Q, }* Q/ n8 c( E; I3 f# o
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TCP 6667 (ircd)
4 t% ]4 z' ]2 o8 r, q2 l; OCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server." h& o6 j. E4 K* n; p9 U
& l4 _2 e! X& J, F7 g5 UTCP/UDP 135-139 (dcom and netbios)
2 [1 j4 v- Z$ e- s/ Z& E5 ]8 S" qThese ports are commonly exploited by worm viruses:" r. S! b2 p+ c3 [! F ~
135 Windows RPC
' b8 }7 ]! e1 u( D% b/ v" c136 PROFILE Naming System (basically unused)
+ \: G t# \: Q. \& J137-139 Windows NetBios& @9 {& `4 \* Y1 r2 W* s
) \% q# r& m0 ?/ Y& K% K, }9 f& mTCP/UDP 445 (ms-ds)7 M9 D2 ^$ K' K* F7 X4 q! z0 _: Y
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.0 @' Z+ A/ Y" E& `' e9 n1 Y
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TCP/UDP 1433-1434 (ms-sql)
; l: S- z" i4 v [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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