 鲜花( 87)  鸡蛋( 1)
|
之前发过一个帖子有关Telus, Shaw 的比较, ( I7 _6 _5 ~3 `5 k# A4 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。5 v: i* h/ d' Z5 W, T7 ]" C7 P( T2 P
8 M! B9 O0 G$ A4 w. j1 @* d; c$ E( {Does Telus block any ports?
) v! D4 |5 f! Q, t. z$ s( B" v" x2 z; k
The only packages with no blocked ports at this time are the Server packages. & x1 a, l8 B: n4 c
% V- t- D7 m" B+ L/ Q8 `9 gThe Blocked ports currently are:
* I& g# x3 P. Z2 Z' p: g) y& ? E$ F# J
TCP 21 (ftp)
' r( a: V4 P5 x8 S! i8 DCustomers 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.: t c: |" K/ Z; U' V$ b) h
9 r) D3 Y0 z9 q' t8 {. W1 K5 t1 O6 G
TCP 25 (smtp). d* E, K! d; N1 |# F: V. e
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.* q1 O$ }/ P# M; D$ u X7 c; M- x
( ? |8 s, V+ M" v; E8 ?% O6 ~
TCP 80 (www)% A3 w: W7 ]/ f7 o9 b
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.: S- d" c7 v A+ Q) J. g8 j+ ~
* ]* O1 X# w m
TCP 110 (pop3). Y$ B' m# i( y7 X* U
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.9 L \9 a; W# t8 P. x+ U
$ E( m1 f, n1 xTCP 6667 (ircd)4 o! Q) Q+ {5 l w( s1 b
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.9 u1 r* `6 ]+ n# W7 o
5 X0 r- o% u4 b& M8 VTCP/UDP 135-139 (dcom and netbios)
7 [+ f# W( J; tThese ports are commonly exploited by worm viruses: P! X) [, L' ?
135 Windows RPC
4 R9 j( V7 g: g0 g; ^: [0 i; O136 PROFILE Naming System (basically unused)
5 k/ A- B: n# ]3 a; t Z" w137-139 Windows NetBios" Q8 g% b( ?, Q# d9 v
" F% x1 q3 }4 T+ f
TCP/UDP 445 (ms-ds)
: Q- d r- P ~& b8 A+ V6 OMicrosoft 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.
# g Q7 J8 ?0 ?7 g1 u1 q+ o/ x3 \- {0 t, g
TCP/UDP 1433-1434 (ms-sql)$ Y- V8 n3 P6 U# j- x
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. |
|