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之前发过一个帖子有关Telus, Shaw 的比较, 5 N7 F3 ?2 a% I7 J& D" V7 C: e7 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。 V; S' ]+ a" A) r$ @0 {" S/ U
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Does Telus block any ports?
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" P" J% b- [9 I/ G; l* Z% y9 eThe only packages with no blocked ports at this time are the Server packages. ; O+ V0 A8 g$ a h2 b( C! K
+ I# q. s' p$ v$ qThe Blocked ports currently are:& k+ c& y7 T2 a+ s* t
$ y1 {; ~4 g: @( H9 I4 F! {. mTCP 21 (ftp)( g E' k6 k/ l5 {' B
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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* W, {& Y4 h+ ~0 s3 UTCP 25 (smtp)2 x. {7 G. o2 g- g0 k- ~" O6 s
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.
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1 d6 ?* a8 X: |8 X) mTCP 80 (www)3 ?6 v* S$ v9 k+ g; ~
Customers 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.: ~& K( B) j: n# o' ~. h1 m+ Q
3 _: ]# v* q5 h3 u2 n' b4 HTCP 110 (pop3)
8 W, g2 K. U" ?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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q0 m5 H' W1 `) u/ c hTCP 6667 (ircd)( s U& x r2 Y& T
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.! P7 f6 ?! e% u2 f4 Y# M4 z7 {: g
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TCP/UDP 135-139 (dcom and netbios)
2 w; `8 x7 I' K; S' N: FThese ports are commonly exploited by worm viruses:
. J4 q! j4 N7 f/ ]6 t; K8 r135 Windows RPC
/ }. U$ v+ Q }6 ?/ i136 PROFILE Naming System (basically unused)8 y5 e) Z, q/ s
137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)
5 u7 c/ b0 s- `$ lMicrosoft 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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: c+ z% r |- d! U; K8 eTCP/UDP 1433-1434 (ms-sql) y* q: t$ \; b- w3 f5 m# B
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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