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之前发过一个帖子有关Telus, Shaw 的比较, + F. w# R% D6 }7 F# e
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。% D& U6 s7 R% m& `* A2 H
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Does Telus block any ports?
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8 p+ e7 ~! x+ \. w$ T$ Q/ XThe only packages with no blocked ports at this time are the Server packages.
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, J" C- \$ C. b9 t: B kThe Blocked ports currently are:
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TCP 21 (ftp). n: x4 D$ ^' I9 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.0 R/ e9 y$ U. @5 F
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TCP 25 (smtp)
6 C$ d. N" d/ O% |+ n( f9 FCustomers 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.. [# |+ t; }0 i% ]; J7 r) M
; @: y3 W! P/ E9 ~' t$ P# I9 tTCP 80 (www)
* p. b7 G" U+ M% R$ ?9 VCustomers 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)1 L5 g( v8 i6 [/ n+ J. r0 M( ~
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., O# i# Q/ Q' b# x4 L: y7 A
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TCP 6667 (ircd)
) E& D5 }* m# O2 vCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.; m5 @5 ]0 l; A; r/ V$ P; B# b! Z$ V
2 ~4 V1 V) f& ?: \TCP/UDP 135-139 (dcom and netbios)
9 ^( {1 ]6 @: Y9 t3 Y/ F# pThese ports are commonly exploited by worm viruses:/ d l, W( H3 o) o9 \8 X; R
135 Windows RPC
4 L# H$ s1 u5 K3 b: Z4 C4 p136 PROFILE Naming System (basically unused). W8 o4 e; t" E* q9 c1 i
137-139 Windows NetBios6 e- Q4 Y" b7 U+ U% g3 `
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TCP/UDP 445 (ms-ds)
$ H! ~$ X1 J6 C. ]) oMicrosoft 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.5 t9 \8 u5 Z0 r" y! @
7 E) D+ u* q: k0 {TCP/UDP 1433-1434 (ms-sql)
" w; n; O2 W$ V' N8 |2 gMicrosoft 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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