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之前发过一个帖子有关Telus, Shaw 的比较, . _6 o: n9 c" K0 h+ b8 P
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。( p$ F! {, u' p$ T
1 B% q* A8 O& p$ Q! ]3 ]; U U2 iDoes Telus block any ports? ; G9 J, W5 L q6 J
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The only packages with no blocked ports at this time are the Server packages.
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; ?" z/ m. _' y% VThe Blocked ports currently are: W$ |9 z- q: @4 S/ v
8 @5 I9 {* f) }4 H4 ?1 i! S7 R6 _" MTCP 21 (ftp)
: {$ ]: D$ J( H4 d+ RCustomers 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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( a0 _6 u4 u% H, D7 |2 eTCP 25 (smtp)
1 Y8 ^% o! f3 `" w9 T! ]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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TCP 80 (www)
/ V) z& E9 O2 D/ M; oCustomers 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) Y E" p0 M# p9 k) U
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.6 Q. J' \! Y6 v
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TCP 6667 (ircd)3 |. g {# t5 E) I6 {: V' C; r1 k
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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2 f- L* G9 h9 c' D" J, iTCP/UDP 135-139 (dcom and netbios)
7 w+ f7 [* D: XThese ports are commonly exploited by worm viruses:
7 v" n. Y+ o3 F# w1 V135 Windows RPC# f7 X2 r* C. X6 q% z
136 PROFILE Naming System (basically unused)" j# X- W0 J, Q
137-139 Windows NetBios
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1 r# T7 m, v! {, a/ c- s/ h8 X3 a" ZTCP/UDP 445 (ms-ds)' k2 w- M3 Y9 `1 Q6 s) Z8 ?* ]
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.# r3 v. d' K) R, J0 U5 J
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TCP/UDP 1433-1434 (ms-sql)
8 w# L. e) z0 J$ T ^- x2 z+ IMicrosoft 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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