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之前发过一个帖子有关Telus, Shaw 的比较,
4 d6 A: A6 X; s' M8 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。; T# c: h8 \! ]# I( `
: _! b1 ?. j, G3 S# v9 E' XDoes Telus block any ports?
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The only packages with no blocked ports at this time are the Server packages. 6 u; b( q- m9 i- }+ u! s
/ \+ R y& G: x& I- m5 `' q3 cThe Blocked ports currently are:
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9 e* V) U# s- [ o% @9 ~TCP 21 (ftp)8 E" Y: E; ?5 P1 ^2 k- C" ?/ `
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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: D4 j/ F) L' j9 PTCP 25 (smtp)
9 P5 x+ R3 J9 X8 H& ]1 qCustomers 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.8 L' s1 X5 e; x$ a- L/ ?8 T& o
9 }! ]% W, H3 W- R* [, l2 `TCP 80 (www)
2 l L5 t/ M# vCustomers 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.% \9 j1 e w/ t, {2 M q6 B; T
8 _% Y9 R! {1 h, t6 l$ aTCP 110 (pop3)
% g4 k( \2 M* G* E# U/ FCustomers 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.
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TCP 6667 (ircd)/ Y% J ^8 N: w# v: K
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.# r! T+ t3 R7 _2 `7 G6 y1 `1 P
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TCP/UDP 135-139 (dcom and netbios)9 n" X( U8 i, T" C1 M( E0 ?
These ports are commonly exploited by worm viruses:
) Z) S/ {+ T2 u( H N/ m- h: G4 y135 Windows RPC
! H! ]! {( j9 a5 ^- v) Y( S136 PROFILE Naming System (basically unused)0 r( q9 i3 B( E+ f! \
137-139 Windows NetBios
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. E9 B- S) r/ ATCP/UDP 445 (ms-ds)' |8 q/ L0 _& G" o
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.
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TCP/UDP 1433-1434 (ms-sql)
) G6 E% Q3 V o. GMicrosoft 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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