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之前发过一个帖子有关Telus, Shaw 的比较,
; P& T$ l; K7 w- y4 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。1 w3 ^9 l5 ^6 T: m
% E `* ~9 I7 EDoes Telus block any ports? / m0 W: G4 @- L0 c/ K
) h& n ?0 @ x+ g) y5 r* bThe only packages with no blocked ports at this time are the Server packages.
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The Blocked ports currently are:
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# n# @" Z) k" k- hTCP 21 (ftp)
1 C3 Z `, k/ O6 S/ @- bCustomers 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)4 y4 m3 a0 o. Z0 {* S( G
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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! u2 j2 Z' R( ZTCP 80 (www)
( v+ o0 }# a' b* M- q& `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.* K# U9 }; Z" U$ N) U0 ?
' H+ V) E" H5 STCP 110 (pop3)
+ m) T" s# n" C+ q; }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.% D. u$ Z7 [3 z
$ z8 }, ]1 G- r" y2 Z" W' N0 R/ ZTCP 6667 (ircd)
% j, M# e6 B: L7 @9 S) D1 tCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.9 d8 S7 p: b7 c3 ^
2 v6 I% L3 h+ L3 c' \6 ITCP/UDP 135-139 (dcom and netbios)
, M4 H, A; N) s: ]2 f9 ~8 gThese ports are commonly exploited by worm viruses:
8 o. t, V5 }0 D135 Windows RPC4 @2 Z, z+ j( j9 r5 w4 q
136 PROFILE Naming System (basically unused)1 q4 V6 Z0 X6 F, b% |9 K8 G
137-139 Windows NetBios
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8 }& Q7 r' [' e' n5 c; j" v; O/ oTCP/UDP 445 (ms-ds)3 [: u6 E1 i5 _, p- E* g; z
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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" c6 t3 h) p fTCP/UDP 1433-1434 (ms-sql)
3 s( n5 @& m2 U8 ~7 j, J. 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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