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之前发过一个帖子有关Telus, Shaw 的比较, % A2 k: W$ R% ? O' b
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。+ y8 K2 ^/ C4 ]2 Y; |, b1 k1 \
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Does 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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/ [, g7 C+ D1 l) qThe Blocked ports currently are:6 n+ p9 @$ J N1 ~! h9 \0 ]; l4 M, N) O
, ~/ u9 v8 N2 O$ }6 HTCP 21 (ftp)
/ i% Y+ @* Z% HCustomers 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.3 l/ I2 k; g- w
: h$ N4 v1 a4 X" ]) mTCP 25 (smtp)
% N5 ?4 M# d1 Z- }& }) h; FCustomers 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.# I( X& m$ t/ H9 S# N9 K. W
3 [/ Y1 M$ H5 G- c( ]+ STCP 80 (www): \7 D1 O) U& y3 r$ i
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.* i* C" _+ M8 V! C
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TCP 110 (pop3)
1 M' Q+ I" R) B( 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.5 p1 O" z& [: v! f
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TCP 6667 (ircd)# o7 u$ C7 X0 {, l. d" P* v0 Q
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.2 w" P* t$ N& Q9 q6 a& l9 P1 T7 e
; _3 _. i' Q! l: \* s3 E+ z; ?* STCP/UDP 135-139 (dcom and netbios)/ I7 s& V* P: d2 V9 X( b
These ports are commonly exploited by worm viruses:/ v% ~5 o* O' V0 @ ~/ _$ {
135 Windows RPC: ?9 n! Q0 f& @5 e- ]: W- G4 e& A
136 PROFILE Naming System (basically unused)
, A9 e* J1 P3 j" M137-139 Windows NetBios
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4 h/ r7 n0 f$ k* d& |6 y5 xTCP/UDP 445 (ms-ds)7 w- }8 a- c/ {, _
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.3 j6 u" U; m; e, N& w) q, J
; q$ m ? T& ZTCP/UDP 1433-1434 (ms-sql)8 y3 p) L4 e. a9 h( g
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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