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之前发过一个帖子有关Telus, Shaw 的比较,
0 Q2 m7 B, {2 q6 \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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3 m( ]9 P6 q' w* T/ wDoes Telus block any ports?
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% N$ Y3 m5 l5 l) IThe only packages with no blocked ports at this time are the Server packages.
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2 U V5 T9 o qThe Blocked ports currently are:. K6 I3 o; V; v9 H. \' d8 q, }
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TCP 21 (ftp)
5 X; A9 m& b) m9 O0 G9 t& _! kCustomers 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./ a/ w" V, `. B; }3 `+ ^6 f) }
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TCP 25 (smtp)
0 V" W; a( R, }# o, n; eCustomers 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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TCP 80 (www)
/ E6 X7 N8 S W9 o2 D" V& PCustomers 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 P% h0 O4 f4 r) }9 H7 r$ C* J2 O
* E1 B6 m# ?1 ITCP 110 (pop3)
; v' f- p6 Y! A" I! M, ]5 ]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.' t/ q, W, k. z& c! T" ^
6 `+ s* p1 O6 B& T( t2 E8 qTCP 6667 (ircd)/ h+ R8 w. [: f+ ~; e* v. C$ B
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.
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TCP/UDP 135-139 (dcom and netbios)* u: T7 |. n5 a& g- A
These ports are commonly exploited by worm viruses:
( w. \ T# s. |6 t! E9 K' G135 Windows RPC
% D8 m0 d4 E6 o136 PROFILE Naming System (basically unused)
: \6 _3 R# @2 l8 z2 l137-139 Windows NetBios- [* ]8 x# ]# }; J$ X5 F
: S: g& N/ Q; `& A) A3 gTCP/UDP 445 (ms-ds)
: R, n, _+ x, o# I- {3 gMicrosoft 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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/ o; y# S* i( l2 T; |3 _TCP/UDP 1433-1434 (ms-sql)' X0 I! [( A% j$ [9 `/ K' H
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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