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之前发过一个帖子有关Telus, Shaw 的比较, 0 B5 F! H' o5 ?0 l. C) ?
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" I1 d* L: x- R3 n1 N2 l9 b
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Does Telus block any ports?
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The only packages with no blocked ports at this time are the Server packages.
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# G! B3 j( @- P" [9 y" R6 Q! |The Blocked ports currently are:5 d0 B4 r- P- `0 p" K3 d1 u, h* j
" h; m( V( G9 k/ C# O( h J; OTCP 21 (ftp)
4 Y. t: a0 c0 m, ?' \/ s" Y! c9 R; cCustomers 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)
, e2 u2 k$ I2 G6 B6 kCustomers 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.- }: X J. b" [. p8 D" H4 q
0 \* e4 ~3 W. V) y2 S* ?: ZTCP 80 (www)
6 q o) w8 I7 f. P9 K$ hCustomers 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)8 Q6 `5 |( w, b( H* q! t- I8 j6 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.5 ~/ M7 A! }1 g3 Q& f# D
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TCP 6667 (ircd)+ G/ V0 o4 F2 ]# W. }& t0 f
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.' B4 Y( L* q3 h, c# a }, s7 J
0 ?. {7 }' c, d: n$ _TCP/UDP 135-139 (dcom and netbios)
, I/ _5 K+ r. Y8 d3 W3 O2 K6 I$ a. jThese ports are commonly exploited by worm viruses:5 e% O; o5 T7 x: E
135 Windows RPC
3 o, i7 F8 L. ]5 Q; v% u136 PROFILE Naming System (basically unused)
j& ]: ^0 w" F, H8 P0 f0 K137-139 Windows NetBios
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9 M1 Q5 P# M' ^7 A' QTCP/UDP 445 (ms-ds)% L1 h. u- c4 u8 F' j) K9 r
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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TCP/UDP 1433-1434 (ms-sql)
, j; Z6 G/ o/ k- K5 @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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