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之前发过一个帖子有关Telus, Shaw 的比较, B' d# ?- r s6 k9 t
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 p, [( i4 f0 ~. S% {" k
1 {7 f/ E% }( N P( r! z! o& jThe only packages with no blocked ports at this time are the Server packages. 6 p) @6 {( U; d# l4 l/ G- t- d
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The Blocked ports currently are:3 f1 w3 {& ?" q2 o5 Z
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TCP 21 (ftp)
; J: l- U# r3 v e& f, L3 V8 YCustomers 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.* v' j! y; \, i- u
, F* Y- I+ T; u6 ATCP 25 (smtp)
- s, `$ l R, A. }- Y# i: }- GCustomers 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.) B4 l$ x# x) p# ?! K% r0 B7 `$ D, `
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TCP 80 (www)
! U. ~0 a; p' ~0 s# @% N1 I# f5 qCustomers 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)
1 U2 c+ l6 \1 e, a C4 h( ?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)( Q# y4 \8 E% v+ t) a+ W
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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- a9 y! a* [) c1 u- _8 c0 b& \; i/ {8 wTCP/UDP 135-139 (dcom and netbios)
3 y& v. Y; }2 P1 HThese ports are commonly exploited by worm viruses:
# z( Q! Q; {* l9 u135 Windows RPC
6 ~! h8 T$ A2 @* d3 u8 ~3 F, j136 PROFILE Naming System (basically unused)
/ n: Y2 G$ L# P. B0 Z137-139 Windows NetBios8 k; M8 {. i4 q4 V! J" }1 P
% ?5 f2 m1 R$ L2 _; a1 e) p# D0 ZTCP/UDP 445 (ms-ds)
, q, v3 ?" n6 K) g, 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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( A: c- e# G4 w6 h9 [# m, \TCP/UDP 1433-1434 (ms-sql)
0 u6 a' g/ F7 c" b, EMicrosoft 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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