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之前发过一个帖子有关Telus, Shaw 的比较, 7 |. l4 F+ E2 K6 c+ e2 p1 `$ ^7 A
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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4 a) X4 l, i+ l0 |Does Telus block any ports?
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$ A7 f8 }1 J s" s4 u- ?# M) YThe 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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1 i$ a e5 E9 ?0 ^5 Q mTCP 21 (ftp)
( r: ~4 E. d. s+ T9 f* j6 @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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8 \& [% p/ @( dTCP 25 (smtp)
: J5 Q u1 ]) B& ]+ iCustomers 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.& }: } Z/ {. e2 i3 X! \5 A
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TCP 80 (www)
4 B. c4 @3 [) v$ J- y" aCustomers 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.9 ]8 V2 Z( ? _
% h2 Q/ h8 |+ k6 t0 T! Z s3 |/ ?TCP 110 (pop3)
- R5 @ ?$ U1 ICustomers 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.9 T# w. b1 W8 j
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TCP 6667 (ircd)' [9 ?& N: Y# R8 `& V4 c
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.0 w) X& { H& h
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TCP/UDP 135-139 (dcom and netbios)
5 d! {, y% ]4 l# K8 ^- [These ports are commonly exploited by worm viruses:
r; k Y4 a7 P. i135 Windows RPC; P0 X- x/ z9 i; m$ Q
136 PROFILE Naming System (basically unused)
$ w3 d& K2 ~. U3 B) |+ ?* [137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)
1 i: a; Q) t9 rMicrosoft 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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TCP/UDP 1433-1434 (ms-sql)$ w4 g+ }7 Z( c
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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