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之前发过一个帖子有关Telus, Shaw 的比较,
( H+ t1 {- e4 Q0 s7 |& o- K2 J* 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? . \! Y8 A- p' _; t. c
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The only packages with no blocked ports at this time are the Server packages.
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! t Z+ _7 @0 W/ _The Blocked ports currently are:
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TCP 21 (ftp); r* f2 C+ |7 D+ [$ w! ^
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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TCP 25 (smtp)
. e/ N/ c! Z( J. `5 Y, DCustomers 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)
8 I5 ~2 u6 [7 Q5 O9 {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). Q5 F* L) c, S" A6 C
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.5 G4 h/ m! Q; R# Q3 ?' q
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TCP 6667 (ircd)
+ {. o" K0 D- s' r: O; `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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! X7 @/ l0 \" f: yTCP/UDP 135-139 (dcom and netbios)
9 J& p4 Q8 O- M8 u0 ]These ports are commonly exploited by worm viruses:# p# f5 p! G/ W5 z& H1 l
135 Windows RPC
3 x+ _& K: b- s; C; S136 PROFILE Naming System (basically unused)4 ?) Z: p7 g( Y3 m7 e2 R0 Q1 e5 m
137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)
6 {5 Q% _2 O9 G$ T* x% GMicrosoft 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.9 U ], N1 g! }3 E5 M' C
" X$ o+ m3 Q3 x3 b; VTCP/UDP 1433-1434 (ms-sql)
# R e9 b9 k) t! w2 _5 ^: k, E* p' q% s* cMicrosoft 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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