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之前发过一个帖子有关Telus, Shaw 的比较, , `6 Q5 C2 X/ e3 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? " L# v/ v- e& `7 i6 |
6 y% H! u8 | ~* kThe only packages with no blocked ports at this time are the Server packages.
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* Q+ P# W9 y4 q, ^* }4 I6 EThe Blocked ports currently are:
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TCP 21 (ftp), |7 ]6 R' b+ k2 n
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.' e* K" Z t- k7 ]. {; ^/ H2 D/ O8 f
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TCP 25 (smtp)4 u3 Y% c7 G" o6 m2 @% u3 K
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.* N5 E* C, `, v0 o5 ]7 d* `
# T. E& n+ f/ J" j3 E. ]TCP 80 (www)' t, y/ z6 A* F! }
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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; x M5 i6 {; A& QTCP 110 (pop3)
" O$ K1 @! u+ S8 u+ a VCustomers 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.' m: ^( R, _6 U( N
+ B, V# v/ C" X4 HTCP 6667 (ircd)
& W' H; @+ y3 \* V% BCustomers 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)
8 y6 b2 V8 L4 g' H& qThese ports are commonly exploited by worm viruses:) G3 l/ \& y& E+ |
135 Windows RPC ^) W n3 r* R# U# L$ y9 O- V
136 PROFILE Naming System (basically unused)! U3 R5 L1 G; H% ~" J# F( U% X
137-139 Windows NetBios
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# R- C# Y) L8 ] }/ z9 h% I! H4 OTCP/UDP 445 (ms-ds) \5 @4 A+ |7 I4 a: l9 P7 v2 v( K
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.7 j+ Q5 S, k( B1 Q: n. Y. l
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TCP/UDP 1433-1434 (ms-sql)
/ z0 K8 o5 N' y2 s( kMicrosoft 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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