 鲜花( 87)  鸡蛋( 1)
|
之前发过一个帖子有关Telus, Shaw 的比较, 4 a2 q1 V, u" O6 e
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。. H. f! V4 o9 u0 | E$ H& L5 ^) F
4 X" _6 f: b! b$ f, vDoes Telus block any ports?
1 E. ]9 \0 Y7 t4 E5 U* _2 ?) q$ K6 J' ~$ c( R" y+ i
The only packages with no blocked ports at this time are the Server packages. ! k) ?9 c. k+ p: \. K2 o
2 P/ B7 {0 G# x" y J% e
The Blocked ports currently are:+ d5 y& _' B$ K- B( w6 k0 T. ~- |
4 P+ P% z1 s9 w& G" CTCP 21 (ftp)2 q) \ h9 v0 W# E" b- Y$ M, J
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.
$ |6 _6 T3 O9 g G8 o4 f) ~9 Z" ^7 F1 h y2 t! r" I
TCP 25 (smtp)8 a' o8 t- U) Q0 K
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.' c8 h- A2 i) w1 g1 T
& t3 ~6 R" i9 l8 V9 ~ g' RTCP 80 (www)- D# z& O2 t* n4 k9 N) Y
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.
; h* C! f; j4 I" C
5 Y# @* i# _/ ?8 ]9 v8 D: BTCP 110 (pop3)6 I$ r$ B0 ^7 _! F' c
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.
. }) ~* C) O& B$ `
# J' C; ], u) s y% }TCP 6667 (ircd)& T" q g) E: n; k
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.
0 I( V3 Z$ i$ z
2 S5 R9 a* ^) ~ ]TCP/UDP 135-139 (dcom and netbios)& F' p* m) p- B# b
These ports are commonly exploited by worm viruses:7 e9 X2 k& [* A2 g& [* z3 N* d' V
135 Windows RPC5 N6 Q9 E% x6 ^9 e x6 U( ?! Q
136 PROFILE Naming System (basically unused), @( o3 ~3 t# L# z
137-139 Windows NetBios& S6 Z5 ^+ u# n* X8 Y) z
$ W- G2 a8 X3 M6 ]! c
TCP/UDP 445 (ms-ds)- P- s8 {4 L/ ~3 V$ z
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.
7 r; F3 x5 t) w1 a+ }$ V
! a7 e; v2 B& T S$ P& X5 ^TCP/UDP 1433-1434 (ms-sql)
& S3 m4 k/ j+ X3 QMicrosoft 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. |
|