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之前发过一个帖子有关Telus, Shaw 的比较,
/ _9 q3 H) J9 M5 i$ f! l* u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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+ h$ J+ l5 ?$ W! ~Does Telus block any ports?
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( q: t8 r# W/ f0 X- g& t/ K2 R) h, |The only packages with no blocked ports at this time are the Server packages. & p( i; Q$ R) G/ Y$ E. d
/ X, \" k4 ^9 Z9 D, ?The Blocked ports currently are:& @* b: V- v5 X$ S8 y
4 t/ B" f. r3 Y$ dTCP 21 (ftp)
7 ^9 O2 \5 ?2 s4 ICustomers 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.; {- D0 ~9 P! ~7 k* R- ~/ F
' X( d0 O. B4 E: U& |TCP 25 (smtp)+ B# [* I) `: D7 h. \/ T1 Q
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.4 P; O5 R& m9 F. H" u: o* A; p
9 g/ i4 I0 H2 k! _TCP 80 (www)6 {( o+ J" g6 \1 E7 n+ }
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., l; B/ [+ p: `
+ x! m, \. O+ _1 P8 \6 tTCP 110 (pop3)
; I/ k& D7 u: f U0 V) P' I- VCustomers 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.8 y, R( ?, `* \3 H0 O" Z4 y! }
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TCP 6667 (ircd)# e, q" A0 z7 k, u# k, ^
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.
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( Q3 z, s8 }$ b' ]+ ~8 j3 ITCP/UDP 135-139 (dcom and netbios)/ w' T0 k: k" S2 ?
These ports are commonly exploited by worm viruses:" Y7 s+ g2 d% e N" ?( g
135 Windows RPC
0 _4 L" \/ z# W$ R1 T% w! r. U# \/ n136 PROFILE Naming System (basically unused)2 y; Y; s' j2 F! Y; m
137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)' a/ a/ w$ X% ?- M: a- w+ M) f
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.
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TCP/UDP 1433-1434 (ms-sql)
4 O/ I6 ]6 K1 d5 u2 ZMicrosoft 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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