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之前发过一个帖子有关Telus, Shaw 的比较,
2 Q. U G0 S4 j7 F- B( s# F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。9 L u. E* U. g# l$ j4 v
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Does Telus block any ports? - V5 s7 F, i0 v# w) e$ Y: s
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The only packages with no blocked ports at this time are the Server packages.
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The Blocked ports currently are:( B$ k0 f6 c8 \) m% j0 Z/ H ^' b
, y# Q/ A/ d% _$ b& t) Z- }TCP 21 (ftp)
1 @/ \0 a& {0 z: W1 p0 yCustomers 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)
0 R5 @( M) v/ K* }, O8 e& ~9 NCustomers 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.7 D+ G% u8 ]! }- j6 l
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TCP 80 (www)6 q: R: o1 ~# `1 ^
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.% ~* V1 q; w( e
! x5 S( `: \# e% TTCP 110 (pop3)
; t- p9 H( ?2 w0 E/ U/ rCustomers 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)) o1 b5 O! [& R1 V, n
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.8 C9 t. p! @/ [9 B" A1 X! W* Y
3 ]4 i* G8 O* I- x7 LTCP/UDP 135-139 (dcom and netbios); D" J" Q; J- _ }8 E
These ports are commonly exploited by worm viruses:
, r/ |# z1 i/ k) g' o# {135 Windows RPC. e8 R. E% ^ _) B$ T
136 PROFILE Naming System (basically unused)% e$ D' a9 n# X
137-139 Windows NetBios1 q& k3 M9 q: r7 j0 a8 b2 Y
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TCP/UDP 445 (ms-ds)
9 Q1 a( m8 c4 G/ d- S* YMicrosoft 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 O4 d' e) b( w9 }' q4 m
; x# E# ]( P6 a2 v2 l# j: D- ATCP/UDP 1433-1434 (ms-sql)
2 V9 w& Q6 a5 p. A5 O" pMicrosoft 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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