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之前发过一个帖子有关Telus, Shaw 的比较, ; [& R6 b+ l5 t4 K
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。
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" |& V: Y$ \5 ~7 x; yDoes Telus block any ports? ' D6 c0 S8 I5 [0 C1 ?. L- m8 [" K+ g
; w% j/ }1 @* K. ^The only packages with no blocked ports at this time are the Server packages. ) g& s+ V' y; p' ^- k* T8 q# M3 \
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The Blocked ports currently are:5 r5 `* ]" n c6 U, ~/ ^4 Y
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TCP 21 (ftp)
8 U) Y5 n9 u9 l7 E: p: X% `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., W& V/ ]2 |/ E: B# {$ `( [: N
7 D/ y7 A. j; X' DTCP 25 (smtp), `- p% U! S9 L7 M& ]
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./ h7 ], y9 o5 w% T) @
. |$ G2 ], k8 ^/ k j; CTCP 80 (www)
- c$ j6 i2 k4 L( a3 ACustomers 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.: Q* D; ?/ r4 O: B9 P
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TCP 110 (pop3)
; Z" Q' O3 _0 P& a# sCustomers 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.0 x" g3 U5 T9 |, x, o
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TCP 6667 (ircd)# o& h, w7 p4 B* ]& L. R( @( ^9 _& B
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.# |( J( Z* n, O% z; q
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TCP/UDP 135-139 (dcom and netbios)! Q# O* c. a1 [: f5 M% X+ R7 @
These ports are commonly exploited by worm viruses:; Z4 X, \) A+ L- v2 P) {) b
135 Windows RPC
1 d4 P1 Q/ G& a% d136 PROFILE Naming System (basically unused)
& w1 E* e E' T% T137-139 Windows NetBios9 W' U! G, {1 o/ J$ I! }+ W
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TCP/UDP 445 (ms-ds)
/ j6 F$ d6 J% ?2 MMicrosoft 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.. a3 [8 _. {* e2 K+ E0 i# ~
! ^' f& l- I5 J6 y" X& ~TCP/UDP 1433-1434 (ms-sql)1 x1 C/ a6 g2 S. _6 q+ R1 L7 b
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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