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之前发过一个帖子有关Telus, Shaw 的比较,
8 l9 d# u: E/ N+ z1 v( Y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。8 p0 o4 {0 t$ r3 y! [" t" J; W
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Does Telus block any ports?
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# p# j& c2 S1 }1 @6 [& L+ zThe only packages with no blocked ports at this time are the Server packages. 2 ~$ {3 ]+ L/ b e8 n) z! C% U8 |
/ ?$ g3 j( `) o5 o" f" PThe Blocked ports currently are:8 a/ h9 i; N! P. t7 w: r b
/ o8 z: T- B- WTCP 21 (ftp)
7 b1 R) V6 Q3 }+ b8 V3 h: YCustomers 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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3 v; N: A- U6 E" n2 o5 E# ? [- PTCP 25 (smtp)7 E4 Y# g/ o I5 Q1 h
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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1 s8 T. l% \. w2 P/ I; a! v" ^9 kTCP 80 (www)# O& h4 E7 O' F& ]9 ~/ x
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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TCP 110 (pop3)
+ f! n# R! w* B& e. CCustomers 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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# _0 H' h( ?3 o& \" _6 [7 b6 TTCP 6667 (ircd)
: D |( Y$ V$ _. @ u, @+ LCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server. { P: u7 f. _, N5 M! J1 h9 D8 j
- J$ }2 ^, v7 r& r, C+ NTCP/UDP 135-139 (dcom and netbios); v7 C' F: X$ H# B
These ports are commonly exploited by worm viruses:
" \0 `6 k0 a+ f$ ?135 Windows RPC3 W5 r$ p, u- c# o) |
136 PROFILE Naming System (basically unused)% A8 L) b5 o3 w9 a
137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)4 K1 C. m) K0 X' D# x: F4 a
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.# W$ i" g/ m/ A6 X3 P
# A9 d0 C- B9 k$ j9 F! pTCP/UDP 1433-1434 (ms-sql)
9 R: P0 Y) v9 a- L. e3 S* z, ~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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