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之前发过一个帖子有关Telus, Shaw 的比较,
( A* Y# b. q* c/ e# U! C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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# `% P- U* p9 x& l9 MDoes Telus block any ports?
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The only packages with no blocked ports at this time are the Server packages. 1 f% k/ s7 U- E$ C3 }$ a
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The Blocked ports currently are:4 s C& c9 M4 l+ U2 n% S
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TCP 21 (ftp)
/ \( c: w2 u2 W+ E: GCustomers 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)
. d) G7 i/ C! `% y+ {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.- I( t. R$ T$ z9 I8 c
% t% i% S' }- g* V3 f! u! q& B$ TTCP 80 (www)* F' t' p5 `3 J6 n$ N
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./ _* b1 b1 v! e/ ~' a
$ L6 V+ j5 `$ K* b9 k$ Q u7 zTCP 110 (pop3)
- {) o. J' N, fCustomers 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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: _0 y# R2 \1 H3 p4 b" [TCP 6667 (ircd)9 [9 K4 D, g$ F4 k: O: A; m
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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* v. T# M- W. H* k3 bTCP/UDP 135-139 (dcom and netbios)
: ^( F. v! F5 |' E; s. `These ports are commonly exploited by worm viruses:
! l1 G* g. U0 X: A2 l+ ?135 Windows RPC
+ _1 [" ]- ^. _5 B3 W) C136 PROFILE Naming System (basically unused)
- p5 X1 _- J8 d, e' k! P' v: F137-139 Windows NetBios7 d I- @" L z) H* m
& L- I, I3 u1 _TCP/UDP 445 (ms-ds)
* v0 [# ?8 G' 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.& q( T* H1 H) d; W+ H
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TCP/UDP 1433-1434 (ms-sql)
* W: F" z# a: X4 G/ UMicrosoft 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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