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之前发过一个帖子有关Telus, Shaw 的比较,
3 S+ V( P5 a- z" z) z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。1 R( o0 b; |9 x! F' K
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Does Telus block any ports?
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+ A8 ]* v6 K1 rThe only packages with no blocked ports at this time are the Server packages.
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# Y5 D( L5 M, Q5 ^5 w$ D, ?$ E5 W: p8 NThe Blocked ports currently are:& E# V) i+ P7 B. v u: d$ ]
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TCP 21 (ftp)" U3 V$ p s$ ]# j
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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TCP 25 (smtp); G6 L% G s: U9 C2 c" \! q$ h
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.
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7 _! ~% v1 B4 O. _2 ^TCP 80 (www)' e" i3 z7 a! u( L
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.
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TCP 110 (pop3)$ | ~# B4 t& G
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)
2 Y7 v) o; ^: g6 X* KCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.( M0 v! @9 i& y. u
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TCP/UDP 135-139 (dcom and netbios)9 W' k: a7 \3 M& h. K6 F
These ports are commonly exploited by worm viruses:
! w7 f# z: p6 p; |$ C5 G/ V; o135 Windows RPC
: [" }( @) y$ b& e7 D5 J; z9 b136 PROFILE Naming System (basically unused)
. z* m% @) G- y4 z137-139 Windows NetBios! A! g# v* Q* Z; \( j0 X' ^
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TCP/UDP 445 (ms-ds)
" o" N+ J4 H S) O7 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.( j* F! @( Z& [, J: B
" f" _0 C( S) ZTCP/UDP 1433-1434 (ms-sql)
! }: C" v" n& X# A3 e. WMicrosoft 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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