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之前发过一个帖子有关Telus, Shaw 的比较,
; ^! x# r7 A$ [6 U5 W& 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。) E% \) @4 |" l" U. ^ W4 x
0 S8 x# _: w4 F1 b+ T$ BDoes Telus block any ports?
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1 |4 [' h. o; P) z3 \' BThe only packages with no blocked ports at this time are the Server packages. 8 M0 _9 I6 x& q
- s. z# b9 ~& U3 J/ E) MThe Blocked ports currently are:
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C: ]0 s8 Z' [$ n8 z- [TCP 21 (ftp)& ]" h. J2 e& {* e" b1 ?
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.
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/ f8 x3 k8 f( Q u# x- a# uTCP 25 (smtp)8 U: O3 f; Y. K# w
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.+ L5 \$ D( F5 H) @9 X
* ?0 a9 c6 d) F! XTCP 80 (www)
U4 v* c( [* |6 tCustomers 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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TCP 110 (pop3)9 L0 \, X* s2 y
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)
3 H' n# @# F! \+ _: y8 k7 zCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.2 V" j' F; \: @
- c5 w' n8 `: \6 k0 h1 h' C- Q1 STCP/UDP 135-139 (dcom and netbios)
5 d# l3 ?' u6 Y# ]: H) @9 o8 @( YThese ports are commonly exploited by worm viruses:
7 ~; `& I1 e* C; k5 h1 z l% d135 Windows RPC ?6 Z1 C( i+ L' q1 z. l# T8 ]! I3 a& c* K/ u
136 PROFILE Naming System (basically unused)
: Z# K7 b9 W2 C8 m137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)
# |% N! }9 h$ ^5 H: _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.
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t$ s! P0 W( E4 sTCP/UDP 1433-1434 (ms-sql)
: K! Q# p; |& m- fMicrosoft 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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