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之前发过一个帖子有关Telus, Shaw 的比较, 2 y+ [! n- p( F. N, P& k* L( P+ m
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 K9 c" C: j7 C; M: s$ a' w6 m/ A: m1 Q
+ z2 _$ F% C) {+ x* NDoes Telus block any ports?
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The only packages with no blocked ports at this time are the Server packages.
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% Q2 H+ ]. ?$ _# u+ f1 WThe Blocked ports currently are:3 K& W8 Q' f3 `/ G
" u4 y; Z: Y$ Y9 ?2 w* y" eTCP 21 (ftp)
& S! S7 j$ m* S8 g; }0 ]; c+ fCustomers 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.8 ]# {7 @8 D' O) V6 K- N- O
/ k4 k+ U/ I3 OTCP 25 (smtp)
1 y, a5 V" b' t" ]+ ?; f0 TCustomers 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.9 y5 }" y2 C: V V& u4 U% Q
! d/ y7 p$ j( p; y% M* LTCP 80 (www)
* F4 o/ G& X2 E! E* y- V2 w. ICustomers 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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7 T$ T o1 c Q WTCP 110 (pop3)
: s' J( {/ u' r- ^% g! J$ ^3 X- W lCustomers 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)
8 @: `* y n+ M4 fCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.
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TCP/UDP 135-139 (dcom and netbios)
" D7 j O) J8 L8 e, `8 `1 Z8 JThese ports are commonly exploited by worm viruses:" r1 Y! S. _9 H1 Q( P8 J8 K
135 Windows RPC# E$ y" v& O0 U
136 PROFILE Naming System (basically unused)' I7 `! ~8 v. P. x; J$ ^9 F2 O V
137-139 Windows NetBios9 P( [ k: p9 @0 Z' @. m8 n
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TCP/UDP 445 (ms-ds)
- |' ^3 {% t6 n- h) h) v* {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)1 _( Y" s: g: s9 J4 _
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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