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之前发过一个帖子有关Telus, Shaw 的比较,
4 j, H- u4 Y( l8 n; s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。2 B& B) A+ o6 Z7 v" ?, [1 J+ r
0 f8 h& N6 p; r/ HDoes Telus block any ports?
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E& [8 [8 q4 r' b+ }The only packages with no blocked ports at this time are the Server packages. 3 e! }: r9 v; ^1 k: ^. h# Z
) |% @! s$ X( [% `. x: F% d4 kThe Blocked ports currently are:; I* }6 G) `6 _: n
4 D. G& g o1 cTCP 21 (ftp)
* }1 F. K1 c$ M) BCustomers 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 \& X( g/ ?2 O$ Q& j
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TCP 25 (smtp)
8 r/ s5 ?, R/ P2 x' k3 {7 m, P) J9 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.* \6 ~9 U' B+ R% `
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TCP 80 (www)
+ H5 y$ R$ a, ~' M: GCustomers 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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9 s9 H3 E2 e& K' L) y, rTCP 110 (pop3). ^3 L, L b, x8 c2 Q5 R
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.! P" O3 |: D# H
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TCP 6667 (ircd)
`* {% y& ~$ a% O7 B# D) XCustomers 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)
: }1 Q7 p; [" ?/ G$ i) lThese ports are commonly exploited by worm viruses:4 ]) A* R0 A8 ^7 t1 j$ L! t% u
135 Windows RPC
. o7 g3 `; l" z1 m- z136 PROFILE Naming System (basically unused)
6 \& _3 {( J8 X |6 m. l0 f137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)5 `$ j4 L3 r5 a, V1 P9 Q
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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9 r- ~( \: u7 yTCP/UDP 1433-1434 (ms-sql)
7 J$ A1 \3 z/ mMicrosoft 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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