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之前发过一个帖子有关Telus, Shaw 的比较, & Q8 b# [2 D% X( W2 X
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。
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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. ' x' H# q8 o7 w6 Y
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The Blocked ports currently are:& b" V7 N5 x; Q+ {3 _' a$ Y: o
& t* G" N4 ?: A1 iTCP 21 (ftp)* K& e% C' A- \- z+ O! Q
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.& |2 w: P3 G/ l) N9 G, E& O5 t
& v: g0 y2 T- T2 C) u: u5 vTCP 25 (smtp)
b$ }$ a" c! Y- C/ _9 x% {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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( u! p ^' F, T2 b" f9 zTCP 80 (www); Q9 ^8 H% j* I9 k. a7 g
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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4 f1 B: Y, W6 O2 JTCP 110 (pop3) t0 o4 f7 Y- B# e
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.' Q5 O, t8 r, F& E
" f* ?- E$ K( i0 J% jTCP 6667 (ircd)
. \& ?9 H* X4 n. a3 q$ `' lCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.
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% e% E1 s5 t* c0 ^3 J9 a P1 STCP/UDP 135-139 (dcom and netbios)
9 D. Y& d! a* `These ports are commonly exploited by worm viruses:
+ x) E* u" Y5 o# v135 Windows RPC' x; \1 Y8 A* J3 A
136 PROFILE Naming System (basically unused)6 \% Y0 @4 ^3 Z. ^6 q5 J/ {# J T
137-139 Windows NetBios$ a, \: }" M" N1 c9 ^1 ~9 V
& ~: m4 {" @& K3 @6 |TCP/UDP 445 (ms-ds)) u5 Q$ [! ]# h# l# n; u/ }9 D2 c- G3 G
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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7 _( b$ [5 X, Z1 K3 s) f1 lTCP/UDP 1433-1434 (ms-sql)2 e8 X! k; V9 o2 T
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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