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之前发过一个帖子有关Telus, Shaw 的比较, $ g5 N k3 Z o" _9 H' a' R
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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?( y& Z, N+ T% V; A" {- iDoes Telus block any ports? 4 a& X& ?+ _) S% F0 E* D
{5 H( r$ F% x- x7 @9 uThe only packages with no blocked ports at this time are the Server packages.
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& Y3 }9 O" X ~, L+ YThe Blocked ports currently are:7 x/ g% W7 Z1 D) S: O% C
: |2 a' ]3 C2 Y+ I& pTCP 21 (ftp)
7 P5 Y# N L, ?7 H& ]( H: O. f" PCustomers 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.$ G0 R1 ?# F$ m6 {
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TCP 25 (smtp)
, c; o/ \2 | s; M/ h8 |) O. ?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." R8 ^% E' t* B; I0 e
; G; b/ G1 n+ }1 A# g9 U0 TTCP 80 (www)
; E/ s* F5 Y9 X& K; v1 R* uCustomers 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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TCP 110 (pop3)4 I B, Y0 A, G" Z* C `0 w; `9 H7 |0 U
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)# _4 N9 z* o( s; X Q$ s
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)3 `! G6 Z. M1 R
These ports are commonly exploited by worm viruses:, v& U7 h& v; J5 Z' |0 I0 J& m- N8 \
135 Windows RPC
6 q% r$ e" S/ W* o136 PROFILE Naming System (basically unused)
8 u& I0 a3 A3 z9 [137-139 Windows NetBios
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u: o5 ], P8 I" OTCP/UDP 445 (ms-ds). I3 Q! ^- Y- i- [" N! v
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." A O. @6 Q1 B5 I
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TCP/UDP 1433-1434 (ms-sql)) b5 P1 g# R1 h2 U; ~! ?$ ]
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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