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之前发过一个帖子有关Telus, Shaw 的比较,
: J; u' } y+ a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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, w/ C- G& E1 aDoes Telus block any ports? / R* f0 L" c* `3 O% i0 {! i
! Z1 N) V& c9 t: F4 b4 _* [The only packages with no blocked ports at this time are the Server packages. " ]. x$ ?1 ]5 x- ]* K+ d
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The Blocked ports currently are:. e& z; ?) m9 |0 v* }3 i
* V5 Z: _4 j4 M; Y5 cTCP 21 (ftp)
- s w+ h& R# ~4 S8 {0 |: e% G* KCustomers 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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) s C7 w+ s( o! K' r; qTCP 25 (smtp): s* K% R! k" U* j
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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! O/ U: {' [4 `1 j* fTCP 80 (www)
% Q& u3 t k' CCustomers 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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* G) s# u; I4 h s. v: F+ ?% RTCP 110 (pop3)
2 `+ f9 i8 s, Z; V; G5 d" t1 n! P) ^1 mCustomers 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 u" [" a" ^- e7 E% p- k, S; a1 y
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TCP 6667 (ircd)
/ R, a0 \$ t. I/ s& m) ECustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.; t; G. `- }- E( b1 C3 [% `% S
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TCP/UDP 135-139 (dcom and netbios)
- H# [4 c" ~ r/ ?These ports are commonly exploited by worm viruses:8 A, A" z E$ s1 w
135 Windows RPC
2 |4 |/ z3 |- i& \/ x+ z l* A136 PROFILE Naming System (basically unused)1 Y+ i, u8 B2 D) _0 n
137-139 Windows NetBios
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4 a, W, r7 p1 P3 [' k+ |' TTCP/UDP 445 (ms-ds)
6 g' `+ B) p4 C9 ~) \6 AMicrosoft 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.. L' k2 }! i( P$ I, M8 t/ t
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TCP/UDP 1433-1434 (ms-sql)7 ^3 j8 [0 g& I4 i6 L
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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