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之前发过一个帖子有关Telus, Shaw 的比较, 1 e* C8 ^' i. g- `8 j7 ]
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。
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: F, a6 x, D6 e6 c% JDoes Telus block any ports? . i) V/ m, C3 C" h- X3 [4 {7 A
6 O0 u3 Y4 S7 o% MThe only packages with no blocked ports at this time are the Server packages.
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- Y3 a' D# Y; ]3 B# Z$ a8 y4 eThe Blocked ports currently are:0 t9 d8 [; y0 O$ [& N0 Q; }! i
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TCP 21 (ftp)5 E. P; i1 L8 u$ U& W/ H% ~
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)
9 k4 E; O$ |7 B H( ~3 y1 r# ICustomers 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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" J. g( \ V p, A& JTCP 80 (www)
- w4 q' Z0 q2 j/ _4 MCustomers 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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% q2 {/ d& ]: A cTCP 110 (pop3)
; |+ [" B- |& \ p" vCustomers 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., O7 {8 K2 D0 I# i/ R; m6 ?
4 C2 u1 l; g0 R3 S- HTCP 6667 (ircd)7 u; J+ E/ ?2 p/ g
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.
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TCP/UDP 135-139 (dcom and netbios)2 V$ ?: c" R% @
These ports are commonly exploited by worm viruses:3 j6 z* m8 ^( d3 F* I
135 Windows RPC) E( h: Z- m/ w9 N/ \
136 PROFILE Naming System (basically unused), `& H0 T, x$ ]2 j: @7 ~
137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)
- _& U0 p5 n9 U, }2 r2 ZMicrosoft 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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TCP/UDP 1433-1434 (ms-sql); Q: X% u- D, G3 ^ E$ W8 {- Z }* O
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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