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之前发过一个帖子有关Telus, Shaw 的比较,
( Z2 P# j* o# Q. ]4 M& ?# m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?
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8 a7 Z0 ]3 l# B. |The only packages with no blocked ports at this time are the Server packages. ) O1 {, f2 C9 V9 J
( X+ c7 | s( J4 l, e! NThe Blocked ports currently are:
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. Z, N$ j4 i1 u. [4 F. n2 QTCP 21 (ftp), F g9 f# N1 a# S: z
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)% r0 |+ I6 W5 s e1 L" F' z3 T) S
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)1 \- w. U$ V/ _8 ~& C
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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6 \9 x4 B5 e- HTCP 110 (pop3)
9 b! Y4 G- w& o8 {& O+ j1 F) o7 hCustomers 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.: H" y5 h: s$ l H! u; e' C! u0 K, d7 T
8 ~, E; f: p$ ]% ?9 s: g1 u% ITCP 6667 (ircd)5 s' t/ S+ H ?3 H; W7 s
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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6 {' J8 w v: B/ }3 T# ?% dTCP/UDP 135-139 (dcom and netbios)# F- w! A. a# s8 D
These ports are commonly exploited by worm viruses:* D. G3 l- _6 k8 i, T/ b( E
135 Windows RPC
' U4 a6 k/ v. l) F: p136 PROFILE Naming System (basically unused)
% r4 f+ x4 g: S137-139 Windows NetBios
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! N0 e7 M m2 ^6 gTCP/UDP 445 (ms-ds): y+ H$ c$ ]0 U8 K' v
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.8 A% i& }* n4 K$ s
3 ?+ o4 `2 _5 pTCP/UDP 1433-1434 (ms-sql)
d/ D: Z& k$ }. u1 X2 l PMicrosoft 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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