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之前发过一个帖子有关Telus, Shaw 的比较，
- p) y! D4 p) ` H) ~/ N5 R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。3 j4 ?6 Q w$ E! z) t
. f5 W7 x8 I) e& JDoes Telus block any ports?
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% ~5 b7 B' ~0 r6 W% ~8 L ZThe only packages with no blocked ports at this time are the Server packages. 7 W7 L: r- D9 d- i
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The Blocked ports currently are:# q& H3 Y7 ?' D. s* v
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TCP 21 (ftp)
7 v0 q2 ` H1 C: g5 [9 _* i4 V. _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.- m0 ` {( `8 t
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TCP 25 (smtp)
: C y$ ~$ w) 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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9 r3 Z( z9 P6 P3 P: yTCP 80 (www)3 G8 T: g) d! W. y5 P) F
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.7 G* l' X. ~2 \) L% p0 h; b7 V
- X8 U0 d0 C9 g# PTCP 110 (pop3)5 Z2 ~' m9 [0 P, f
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.+ I) Q9 Y4 Q; K; d/ b! n# B9 b0 {
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TCP 6667 (ircd)
6 I6 S* d$ F, r2 z6 V: t- r! J% aCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.
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" ?* g7 r" Y' m$ J# MTCP/UDP 135-139 (dcom and netbios)
! ?* k% R' J+ EThese ports are commonly exploited by worm viruses:$ K! A2 m H* w5 k. M8 w" _* B8 h
135 Windows RPC0 S4 ?, l( M+ t( R M
136 PROFILE Naming System (basically unused)
1 k+ W8 F! {6 _137-139 Windows NetBios
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" e, q1 k6 L1 u- D5 s5 @( }) C DTCP/UDP 445 (ms-ds). b9 S1 ` X1 B7 g+ R" R
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.9 P# d0 Y y, l/ ^- t, a
: H* _% M2 E* j1 D& r; m# ITCP/UDP 1433-1434 (ms-sql)
9 n; g( `; K0 x! PMicrosoft 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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发表于 2009-11-7 17:58
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