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之前发过一个帖子有关Telus, Shaw 的比较, 3 y: [$ ^: u l8 d4 T6 x) P2 d/ ]
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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# {6 f; o: y# t# L2 J! _5 ~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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) n# D m! `- S: BTCP 21 (ftp)
, I3 X5 V3 Z! B; F |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.( f; o& c5 D& } t; \
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TCP 25 (smtp)
" m% E2 s$ f( k; S/ vCustomers 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.% M' w% z8 Z4 [1 {5 ~" L k# M
3 H4 }" C9 \9 D# I3 MTCP 80 (www)
2 H) r. |" v4 ?; R3 M! O8 T$ BCustomers 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.2 M/ T6 H# O( t7 p7 k* o# D
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TCP 110 (pop3)
% X6 _8 O, x' W8 H' Z S# \* F" ~% zCustomers 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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" a% V3 z3 N2 ], T3 {4 z& a2 |* ZTCP 6667 (ircd)
+ j: i" w- }0 g' ~' TCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.* Z: ^" \. l8 c8 o' \- n$ ^
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TCP/UDP 135-139 (dcom and netbios), I( N+ G" p! z0 [ O! [1 J% a
These ports are commonly exploited by worm viruses:/ t; x8 [ b) s$ d% Y8 ^
135 Windows RPC
. I8 Y! j8 z. N136 PROFILE Naming System (basically unused)1 a( E- f7 Z: g J
137-139 Windows NetBios1 Z9 U! r1 x/ @ `+ |1 W) c
! P, m+ j8 Y5 w2 ?6 lTCP/UDP 445 (ms-ds)/ D8 g" H* h' F% x0 V' \
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.4 t* O' r' e5 g7 n% w% m! A% L
- k! I; h% j; c5 Z, _% b; U3 aTCP/UDP 1433-1434 (ms-sql)2 I2 v5 N2 O0 a
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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