 鲜花( 87)  鸡蛋( 1)
|
之前发过一个帖子有关Telus, Shaw 的比较,
0 k) ^2 L4 t' X$ W: 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。
/ n. R& u2 ^7 l. Z- x# o- Z# [
+ g8 S" J# ]3 I% `Does Telus block any ports?
9 }( y2 h+ }& p* Q: V7 s8 B+ i
- J+ F9 A& w i/ d" BThe only packages with no blocked ports at this time are the Server packages.
6 J; {9 U6 Y2 d9 W, u9 Q% `, u
5 {1 U5 D% X& zThe Blocked ports currently are:1 o6 D- r5 M+ n/ x# p$ S$ }
6 a6 N, T# ?, q) N0 [5 w' T% B4 yTCP 21 (ftp)
" W" @9 A! Y2 D0 GCustomers 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.
% e- ?* k6 V7 q7 G/ k7 s5 n+ n
" e0 i4 t$ a: G: bTCP 25 (smtp)
" S! O2 \ s Q8 wCustomers 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.
' W! S$ C, E* F* j0 F
- Q, y6 K2 S6 N- S- d" [: VTCP 80 (www)
2 q& ?( `3 m- L3 ~8 vCustomers 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.
3 I- C3 x2 P9 k& e/ x6 | N, G5 T( |& U; B8 ]1 ? a
TCP 110 (pop3)8 c0 A3 B& ~, x" g0 S6 X6 M
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.$ _( G2 A8 ]- l* f) y$ p( I
% e9 W- N. r8 F+ P; Z ]
TCP 6667 (ircd)
) `- a0 g0 C2 p* ~Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.5 ]4 R" z* Z: I3 e, N( u
9 R- z$ ~ R$ [
TCP/UDP 135-139 (dcom and netbios)! J/ B r3 |/ d4 w
These ports are commonly exploited by worm viruses:
) w( q) T9 k& E) f$ h( M135 Windows RPC
) D" n1 y7 Y- o5 x1 {& y+ e4 z1 k0 A136 PROFILE Naming System (basically unused)
) O9 S+ n s2 x' y8 k v& I$ R137-139 Windows NetBios& e6 r( |7 J9 }* h" z
7 t* D; R2 @; R& iTCP/UDP 445 (ms-ds)
( ^% F; Y" y; o2 ^" _1 A" w: qMicrosoft 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.
1 s A6 @& K& j3 `8 u: Q9 {
/ Q, m: V, K' Z. R1 CTCP/UDP 1433-1434 (ms-sql): ~2 r/ k6 A) q! ^* e
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. |
|