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之前发过一个帖子有关Telus, Shaw 的比较,
+ S* \, U5 b ^) o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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( `, e5 o+ t5 z8 lDoes Telus block any ports? 7 t: Z% o' p9 {' a5 L6 ^4 p
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The only packages with no blocked ports at this time are the Server packages. 1 z( F" I; M$ f* ^# c6 Y( y
# C3 l/ P3 ?/ {, o7 H! uThe Blocked ports currently are:1 j6 r+ U' I+ g& S0 b. X- T2 A4 O8 M
+ F7 \8 c4 {" h9 a3 j) i1 d1 ATCP 21 (ftp)' O+ s' @( g6 `1 Z6 j
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)
, u o5 u9 o% `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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" B% S6 a* C" P3 |- HTCP 80 (www)
& Q! R! S/ [& |" z2 | nCustomers 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)
8 o7 V) N, f2 z, xCustomers 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.6 [! l; t; R. z# O& i. g" V- V
0 ]/ S6 V% d7 C& a! ~' PTCP 6667 (ircd)2 [. O* P2 r6 `7 V- {( {- ?) r: O! b5 D
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.' }; r: V. A- P9 @3 H9 N
# C! A( a* H9 ATCP/UDP 135-139 (dcom and netbios)
. f% o: Q: f! x/ d1 k+ qThese ports are commonly exploited by worm viruses:
6 C& z8 m. W; d135 Windows RPC0 U3 w4 P& Y9 G" G# S
136 PROFILE Naming System (basically unused)
0 c% o/ n/ A8 f9 Z' a4 q2 { v1 B2 I137-139 Windows NetBios8 B n& z- w5 M4 t7 X: N
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TCP/UDP 445 (ms-ds)
& P' x2 [ w1 C- TMicrosoft 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. r3 N/ B/ Q; z1 }( R
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TCP/UDP 1433-1434 (ms-sql)
8 t6 B, }* f5 kMicrosoft 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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