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之前发过一个帖子有关Telus, Shaw 的比较, ) o" x: P) e: D* c# w
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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Does Telus block any ports? % ?7 `' [! U8 [, S0 V# J5 [6 ?7 e7 x
+ H1 }) u8 j! d5 |8 N6 d- J! h& N! ~The only packages with no blocked ports at this time are the Server packages.
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1 D' X; S7 J' T6 [! X' m' KThe Blocked ports currently are:' n( j$ j# p1 n
) @3 U1 H4 E; m: c0 X' JTCP 21 (ftp)# ~# u) D8 F; I2 l* e7 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)* F f8 e8 } Q2 E6 _% X3 r, M
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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TCP 80 (www)
6 H W9 u3 F- f/ p. w* fCustomers 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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1 @6 W" B P$ s* uTCP 110 (pop3)- d( a$ R; G6 K3 g$ E/ Z
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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; ~+ K# [' a& G5 j/ k" }9 ^$ cTCP 6667 (ircd)
7 s3 U* O2 `' p. tCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.# e' U G6 J) }+ A
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TCP/UDP 135-139 (dcom and netbios)& i6 f! e" H* b8 l# V$ e' F
These ports are commonly exploited by worm viruses:0 p/ {' l% r+ Z5 c F0 `
135 Windows RPC7 K/ Q0 v: r- n# N. y
136 PROFILE Naming System (basically unused)
! h: \5 l( } c w( E* w9 u8 H137-139 Windows NetBios! [* _. J$ o- ` j
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TCP/UDP 445 (ms-ds)! S) X0 \$ I. b& d* [! \; s! g. x
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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% L; W4 B( g+ z6 @8 TTCP/UDP 1433-1434 (ms-sql)
. O& \1 {4 d$ E# m. p- x( BMicrosoft 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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