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之前发过一个帖子有关Telus, Shaw 的比较,
# M& E! y8 D$ z8 \6 A( [& O5 R6 F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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% O/ m$ \" r3 h7 a% y0 l9 m% JDoes Telus block any ports?
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3 i2 G- V; l z6 }8 e1 bThe only packages with no blocked ports at this time are the Server packages.
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The Blocked ports currently are:1 z3 T6 V4 w. {7 B9 o! j1 @/ o4 c G7 g
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TCP 21 (ftp)
3 d" G5 ~6 F7 |; q( D8 ~& wCustomers 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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. ]! {0 o( k2 l2 J' NTCP 25 (smtp)
1 K. i5 x. B# GCustomers 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.! W6 \4 M2 I8 W }$ l( p
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TCP 80 (www)
Z; M; s4 B- W% [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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0 q3 z5 ]: v; }/ A! `- XTCP 110 (pop3)
" r0 E5 j8 x4 o9 y% ?( m! XCustomers 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." q, N, C8 b, x/ m4 c9 T& c' Z
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TCP 6667 (ircd)
F6 Z7 h2 N' [) }. P6 u* GCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.% \7 B, D, C" q9 N& u8 P
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TCP/UDP 135-139 (dcom and netbios)$ Y0 D& M4 b, Q9 q
These ports are commonly exploited by worm viruses:+ b4 d) [0 G* s3 N/ K
135 Windows RPC6 C7 [- @( B, U' `" b8 r3 c) t
136 PROFILE Naming System (basically unused)
' ^6 r) Y* [: r5 ~3 c" i5 M3 T137-139 Windows NetBios! q( |( E* H# z0 D' o! C# j
7 p9 z, M4 e- ~' TTCP/UDP 445 (ms-ds), u2 E: K) s) a4 R9 F
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.$ a; M- v, T3 Z& J! }: D- e. U
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TCP/UDP 1433-1434 (ms-sql)
, \, K* f& f; ~Microsoft 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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