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之前发过一个帖子有关Telus, Shaw 的比较,
. I* l9 v8 ]) x- Y5 n0 x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。# v& [ u k" [5 m Z7 j4 P
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Does Telus block any ports? 4 h/ M7 i7 b/ I0 a9 t% Q$ h
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The only packages with no blocked ports at this time are the Server packages.
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+ W2 _ O c& P% MThe Blocked ports currently are:8 ], c/ O" y' e/ V4 H
+ P& H" r4 V" Q- d3 Q# x; ZTCP 21 (ftp)3 v* ^$ N9 E& N' }: Z# O5 D
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.
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TCP 25 (smtp)7 ^' N8 l6 U& ]- i3 h8 c, d
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.
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$ c& U( i4 u5 f& S4 eTCP 80 (www)& d' K) s0 I9 {* i& T+ m) [
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.
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% h6 w' u" a; Y- G7 Y' HTCP 110 (pop3)
* I8 r: C/ ~* m3 i" R$ mCustomers 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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' M: l" r* h k% h1 {( _$ gTCP 6667 (ircd)
6 Z, z+ G/ t% v4 q- B! BCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.
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' u$ X2 ^+ Y( r1 l4 d1 k' sTCP/UDP 135-139 (dcom and netbios)7 m& r4 v5 C; P1 a/ k) Y
These ports are commonly exploited by worm viruses:) E6 `9 y& [2 N, \" Y) g
135 Windows RPC
) t) J M l0 X136 PROFILE Naming System (basically unused)
; r2 @( j5 a/ l( m137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)
4 U9 {2 ?' n- `, B# P' JMicrosoft 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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6 T' m2 _6 p U0 GTCP/UDP 1433-1434 (ms-sql)& K( Q: ]5 c% A
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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