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之前发过一个帖子有关Telus, Shaw 的比较,
9 z5 Z8 m$ L$ k. X* i# K& j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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N& B) l; y. r. g1 e$ E5 ], \Does Telus block any ports? ( @& b8 [2 ~' |$ O
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The only packages with no blocked ports at this time are the Server packages.
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The Blocked ports currently are:+ y) n2 V2 k3 P9 g& P2 ^1 ?; c
0 j; A5 E7 E7 UTCP 21 (ftp)$ Z3 L; j$ W$ U( |; u4 k
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)1 v& O5 w# u; y' `: O2 ~8 W
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.1 ^* G. H% D* K7 f, F
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TCP 80 (www)
1 g4 q, |; V5 Q4 J# \ K. r' u% T9 oCustomers 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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& G. `( T4 P$ n* Y! e* KTCP 110 (pop3)# P) C, z: @* Q# O( Z5 q
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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TCP 6667 (ircd)
9 ~: v: J( @ n. o9 ^$ N% ZCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.; T. D. k" l% e1 f9 y
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TCP/UDP 135-139 (dcom and netbios)* c" C: o. K; F8 f! T" s/ L6 y
These ports are commonly exploited by worm viruses:
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136 PROFILE Naming System (basically unused)8 R/ o/ g- S4 Y' R* [$ O4 ~& Q
137-139 Windows NetBios2 Z) r% |9 E0 U ?
$ C+ I; y) x l o* L6 r$ e+ o- GTCP/UDP 445 (ms-ds)- d8 N% Z6 e5 _4 j
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.$ z+ e6 l; Y) m. V0 l5 N
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TCP/UDP 1433-1434 (ms-sql)5 G, L& ?9 O! R, R9 @
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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