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之前发过一个帖子有关Telus, Shaw 的比较, % |8 R% h* p4 a& U' ? f+ I
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。9 f' I& O+ V) W: L
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Does Telus block any ports?
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( {9 G0 S1 T9 R2 I0 p* QThe only packages with no blocked ports at this time are the Server packages. 4 m H# l+ U9 w9 r
r2 Q8 U. c0 m& i$ E* V+ MThe Blocked ports currently are:3 n- m" D$ y& n! c! }3 c+ ^3 }+ \
1 @; B% ]0 Y: Z5 z+ Y3 g& U" ]TCP 21 (ftp); P8 d- i3 F/ w, h2 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.% A. B* K( A; L
6 [& c% E* n1 T& {) L) V1 JTCP 25 (smtp). u# i5 Y. n7 ?9 L
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.5 o4 W6 r) t6 [
3 P' O6 G7 L8 L n( BTCP 80 (www)5 U, f3 A2 s- @% t* i; @9 y% B
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./ Y( | ]' _+ a# |
. u7 Y5 L3 g% mTCP 110 (pop3). C: h" V( o! Q( i
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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& t& J) t# T. d$ p% k1 {( d' nTCP 6667 (ircd)
6 N5 i: d/ W$ w# d; DCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.
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/ G1 e2 [! J, N* @TCP/UDP 135-139 (dcom and netbios)1 z- C- Z% q1 G9 @; e- E
These ports are commonly exploited by worm viruses:, {0 q2 q) x) u
135 Windows RPC5 q$ C2 o( r5 ~* Z, j
136 PROFILE Naming System (basically unused)3 {7 p0 v6 l+ q8 k
137-139 Windows NetBios
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; ^, p$ Y( I8 U5 `- jTCP/UDP 445 (ms-ds)5 w' G, Z5 v7 a/ ]
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.7 Q/ v5 Z7 F1 R& H, z' Z& C/ \
/ _% j2 g1 Q, L4 S8 V: T( cTCP/UDP 1433-1434 (ms-sql)* @) U3 g8 D* d0 i
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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