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之前发过一个帖子有关Telus, Shaw 的比较, : v5 U3 }1 ^* ~# l& L% k8 d
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? - Z5 J+ L( M* D8 x4 Z- |) F
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The only packages with no blocked ports at this time are the Server packages. ! K9 ~# E e6 G* s
: F) L: ~( l4 W z8 z6 l3 d. D4 w( _The Blocked ports currently are:; w8 Z0 A! Q2 K% }2 _% z# s
6 S& W- B) K2 n. q; h8 b. Z" {TCP 21 (ftp)' I& L" a# i+ Q4 I- E
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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% j3 t3 M [' R; Q* d; t' ~TCP 25 (smtp)
# R. p) U/ k& Y1 s; o* g) bCustomers 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.4 m4 J! v3 j0 G
4 G4 }( }9 x5 K; pTCP 80 (www)0 N% u% k+ _5 O1 E
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.
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TCP 110 (pop3)
( h1 N* g# H) h- Q% U* N! SCustomers 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.* E: q8 ]1 ^* b, o# ]
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TCP 6667 (ircd)
$ _6 b9 K. t# I0 H5 \; [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); N( P3 ^ Q ]8 M6 e& `
These ports are commonly exploited by worm viruses:
9 {& W8 j3 |/ K* |7 K6 m135 Windows RPC
$ W' C9 ?$ e( o! S& ?0 K* b- l1 S# X! @136 PROFILE Naming System (basically unused)* F7 _. F1 k6 v- M! F) M
137-139 Windows NetBios) l8 b8 s5 d/ U' Z" A; d
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TCP/UDP 445 (ms-ds)
2 }* _: y$ r- v4 c t' E7 t% YMicrosoft 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.! O2 x$ x7 ?* _" H0 }0 F7 Q% T; @
+ ^5 P( e- T6 z, L) mTCP/UDP 1433-1434 (ms-sql)$ X% \' d2 f' r& U: N
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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