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之前发过一个帖子有关Telus, Shaw 的比较,
( X7 R2 J/ o" U, h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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0 M% v' Q5 k! o4 P- IDoes Telus block any ports? ; h2 S+ L# B2 u1 Z( C
" f" M" o' _- H: Q) hThe only packages with no blocked ports at this time are the Server packages.
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2 E: `1 u3 y; r0 PThe Blocked ports currently are:
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TCP 21 (ftp). i& L# r; l+ e: n0 B8 u5 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.
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" K. g/ s$ P, I& A: b- u: V4 c/ LTCP 25 (smtp)8 p4 O$ r0 {) w z/ L2 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.9 Y3 }, c* w7 @, S) i
& s; j, }' g! ETCP 80 (www)) r/ e9 n( `/ ]! Y9 q0 g+ t8 ]
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.+ Q6 H0 `" A/ H3 {2 T; N2 O$ j
5 q% R; w3 Y7 M: k1 h2 \2 l& ?* n. pTCP 110 (pop3)% A% J7 n3 Z1 e
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.
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TCP 6667 (ircd)
0 U7 Y: v, y- f. c i( Y W9 yCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server. {9 h- L2 Z0 C K$ P/ k4 N
N- r9 W* R: y3 i4 q% STCP/UDP 135-139 (dcom and netbios)' x6 E' Z% y4 @
These ports are commonly exploited by worm viruses:
+ z2 ~3 C8 Z, w* f) [+ x135 Windows RPC( r1 q& z& m% L. A; T$ v; s$ `
136 PROFILE Naming System (basically unused)
( H0 w1 _3 n2 F T137-139 Windows NetBios; |5 l N* h2 S& c( _3 H
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TCP/UDP 445 (ms-ds)
. R4 O2 V2 E* l5 e% @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.
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6 M5 V; [5 p$ x: L& v3 }; Z6 t! {, @TCP/UDP 1433-1434 (ms-sql)
* c. R! @" n) G7 ^+ XMicrosoft 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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