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之前发过一个帖子有关Telus, Shaw 的比较,
6 D3 u* b, x i, r3 }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. ; v7 r4 J! u. w, n
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The Blocked ports currently are:
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( ~/ H: P) ~: M) H8 c0 ?TCP 21 (ftp)7 b3 Z! c: `6 e1 O2 {
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)9 Q8 W! c" r! s' y1 }8 _ ^. P0 c3 }
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.8 X6 Q1 Y Q3 m. a3 h
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TCP 80 (www)
. v* K! V: t6 Q/ d- K ?5 n% R/ OCustomers 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)7 R1 U' v" N9 A" M
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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, g. b+ o$ V# d/ e5 z6 Q) vTCP 6667 (ircd)
L, E4 Q/ Z1 V4 n1 Y/ b- bCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.
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5 H+ Y; b) V# @ ETCP/UDP 135-139 (dcom and netbios)
% T4 F7 d% |7 b6 S4 GThese ports are commonly exploited by worm viruses:2 L' E5 \0 \% D( w* q$ H- S9 f
135 Windows RPC# B7 B) m$ r' B7 |+ Z
136 PROFILE Naming System (basically unused)
3 f4 r/ b' X/ |( S# A137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)
/ P& K' H3 F0 c+ h3 c- u1 w3 bMicrosoft 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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+ E* p; @7 q" h- aTCP/UDP 1433-1434 (ms-sql): ]0 m4 ]' Y5 C8 l; Z
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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