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之前发过一个帖子有关Telus, Shaw 的比较, : F8 F/ m% z- p) D0 H/ z+ v S
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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Does Telus block any ports? ! r9 C, }3 E9 m0 i$ U
( u$ x& k: o% c; L" YThe only packages with no blocked ports at this time are the Server packages. " L8 q0 O8 w |% _/ m' l
( {) j8 a# m" e& H" b9 h9 G& lThe Blocked ports currently are: o. p7 w# \5 n; Q1 d n9 m0 @( i
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TCP 21 (ftp)
% R' T7 {: | {- }8 z3 tCustomers 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)
5 J+ M+ B4 o* @. \# c" S& SCustomers 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)6 y4 j$ ^, s8 A9 a, T( p
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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* ?9 [0 m4 I5 \% M/ \& s- P) BTCP 110 (pop3)
! @+ O! H& S7 H: 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.: S) Z1 {( p. N9 L+ a3 j, ]
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TCP 6667 (ircd)4 o+ P6 m! G0 n6 p3 J! m
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server./ t' W+ s# ~" J+ S2 q
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TCP/UDP 135-139 (dcom and netbios)
+ q4 g! T: z6 z& D7 I' TThese ports are commonly exploited by worm viruses:: L' @; E1 g, F) \% e
135 Windows RPC
# ^' d3 D- R3 P9 `7 D5 ?136 PROFILE Naming System (basically unused)
0 d- @; `% P: P) }( q: n( ]137-139 Windows NetBios1 L" }8 d' l# e: u0 i2 \
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TCP/UDP 445 (ms-ds)* @9 w1 H( P& C4 g
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.9 {6 w4 H* Z/ d$ t. `
6 ~$ v3 Z( @7 V3 rTCP/UDP 1433-1434 (ms-sql)+ n& c* m# x! k" C
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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