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之前发过一个帖子有关Telus, Shaw 的比较, ( s) M. m- \: ]* Q3 s, `' A
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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+ N1 ]$ f. }" t0 Z' B* s! rDoes Telus block any ports?
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The only packages with no blocked ports at this time are the Server packages. + j7 C0 ?" Z; z# A0 w/ y
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The Blocked ports currently are:
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l* s5 j# M8 r/ f) r7 t) hTCP 21 (ftp)$ k2 m0 k- u9 G. f
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.1 ]6 ^+ h7 w0 y- H- O3 W4 [
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TCP 25 (smtp)4 ^# U# S# v: Y; G, x
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.6 N6 Z4 P0 T$ M1 q+ k, W, E1 a
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TCP 80 (www)
2 j. D" F; {+ ]! t4 l i+ y9 ^9 wCustomers 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.% [2 h8 N6 h; d9 m! O; q
& y; U' h) C$ {2 wTCP 110 (pop3)6 T7 `; M, x- B0 ^
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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TCP 6667 (ircd)
, F: s3 C: c5 a# X2 |: ?7 j& {Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.
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TCP/UDP 135-139 (dcom and netbios)
) o3 n9 V/ P# y2 d' tThese ports are commonly exploited by worm viruses:
; h" m# a7 q, O) u* q8 n3 l# }135 Windows RPC
1 u! k5 a( B. n; ~' x136 PROFILE Naming System (basically unused)
3 P9 W! ^0 n2 T4 D3 _& u7 B137-139 Windows NetBios2 [& Z" d- o6 E. a# M0 c
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TCP/UDP 445 (ms-ds)
/ ]: H2 ^/ x* z; d! k/ r- lMicrosoft 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. w. f1 m; A8 p& R' a6 v$ b2 q' A1 ~
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TCP/UDP 1433-1434 (ms-sql)
% r' K0 @0 j6 d2 l# {. X7 }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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