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之前发过一个帖子有关Telus, Shaw 的比较, , e2 D3 J& F& f0 x# V2 c& w
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。! a# b! C& }2 v ?6 B5 o0 k; r
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Does Telus block any ports? , h9 z7 j' Y: a( A/ R: g3 z
5 F1 E6 g. G+ h, G5 @The only packages with no blocked ports at this time are the Server packages. + Y3 o- k0 h. h% U3 \+ e+ h
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The Blocked ports currently are:" ^; Y* j$ i% V
6 J! _/ N! t- x& W: m# j3 J" J, d! gTCP 21 (ftp)& ~: f' e- 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.% | G4 U& y1 b7 a' ^' w6 V$ o
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TCP 25 (smtp)5 p2 @1 w5 ^4 B3 m4 {5 @3 P4 j5 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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TCP 80 (www)
Q# O5 E0 _) NCustomers 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.- W( Y; ]7 m- _+ H* O- @
/ |( T7 a( Q3 v- X( A* zTCP 110 (pop3)
& S% R" z& v" T1 q7 aCustomers 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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; D$ M) b/ L6 h2 s& {8 V8 G; w0 sTCP 6667 (ircd)* }! R$ Y; ~( \' J4 O
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.# o5 ?' x# U9 K7 P/ s( p
+ f! ?' e5 t/ NTCP/UDP 135-139 (dcom and netbios) ?% Q7 T" O. R3 H. @1 Z
These ports are commonly exploited by worm viruses:
: G0 A4 R( M# p _$ Y# e135 Windows RPC
* T4 K- w! F9 E8 l7 h6 B6 w136 PROFILE Naming System (basically unused) _" o0 r& f1 A5 T2 ]3 p- M
137-139 Windows NetBios
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1 U q" R& _3 {& a7 e" qTCP/UDP 445 (ms-ds)
8 ^1 q9 U: M' s- M1 T GMicrosoft 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.: B5 h5 ?3 l O: e* v5 X
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TCP/UDP 1433-1434 (ms-sql)# f, V( _3 O: C1 u9 r. D
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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