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之前发过一个帖子有关Telus, Shaw 的比较,
2 q5 L F& D1 w! y5 v" }" I% f* D# 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。" q& k4 R2 a: j0 e6 g
" t) R) K) V3 {+ K1 v! ]Does Telus block any ports?
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3 [* I7 {$ V6 ]The only packages with no blocked ports at this time are the Server packages. 1 x; B2 a0 q8 P/ Z3 V+ B- {
b6 W3 n: R. O, s, D$ }: H1 BThe Blocked ports currently are:
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0 d( W& W8 T6 Z; ?+ r6 ]& `TCP 21 (ftp)
* w Q5 E. B6 S+ r/ GCustomers 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)
' W* m. d7 s/ SCustomers 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.* S3 O7 \' J) a; z
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TCP 80 (www)" N8 K- c/ B0 _' T' N3 }
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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& N( Y& T( U7 u) e+ j+ U' zTCP 110 (pop3)
- i# a$ v' K) v7 Q3 q# b8 VCustomers 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)6 J- ^' q, g! r5 @( i" @# ] A4 T
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.7 s# d5 P, \) F! d
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TCP/UDP 135-139 (dcom and netbios)
4 \" S7 o1 ~/ D# Y1 G6 n, x {- O1 YThese ports are commonly exploited by worm viruses:0 T# O0 V) S; L1 h" j* {2 y
135 Windows RPC* c v* g6 f) ^- e. ~
136 PROFILE Naming System (basically unused)
; x( @7 m# h# K137-139 Windows NetBios9 u5 g% X, o# F j- o$ b
0 h+ q+ v+ n: c5 r6 LTCP/UDP 445 (ms-ds)
/ y& u4 d; x$ S% K y7 ^$ {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.2 L- K! J! { W4 a6 T( h" C' q0 Y Y. b
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TCP/UDP 1433-1434 (ms-sql)5 C- Z* E. n. M; u, M
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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