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之前发过一个帖子有关Telus, Shaw 的比较, ( @& X% p* S4 h. }7 W
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。" t- N; n3 {4 A, X
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Does Telus block any ports? 5 u f K. O1 t1 j2 S' w- c& m
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The only packages with no blocked ports at this time are the Server packages.
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The Blocked ports currently are:
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TCP 21 (ftp)
5 A1 B+ f7 n8 s$ eCustomers 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)
6 ]. L/ Z( }9 f8 l) X) jCustomers 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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- R' ?. J% o8 I* [TCP 80 (www)
s6 J% I) J- 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 D# y) J* h* z5 MTCP 110 (pop3)$ s, x& k: {/ ~9 U! m" H
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. A0 w: u0 ^" F' h* G
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TCP 6667 (ircd)
# d6 O3 J7 v; u* I1 DCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.( s3 I Y* ~9 Z; Q) K2 i4 t+ x
' O5 Q- K2 u5 G( s# vTCP/UDP 135-139 (dcom and netbios)9 \ C! ]+ h9 R3 x! ^7 B3 ?
These ports are commonly exploited by worm viruses:
9 ]4 i% M# n( x3 z135 Windows RPC/ J7 B7 f0 y0 q3 y% c# E4 M
136 PROFILE Naming System (basically unused)" F2 l1 U' N! w4 h9 A/ q: B
137-139 Windows NetBios
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, S+ V( G* C# JTCP/UDP 445 (ms-ds)
* u% F" e& }! e4 F: J- WMicrosoft 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." X \4 ?9 r$ j6 r& z/ H
' j7 w: u$ u: I% Q9 I' {4 ?# _TCP/UDP 1433-1434 (ms-sql)
) V( N$ M( E- UMicrosoft 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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