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之前发过一个帖子有关Telus, Shaw 的比较,
! P0 u7 o9 G/ ~6 A4 K7 p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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Does Telus block any ports? ( u, ]* }/ ~- a8 D4 W$ \7 R
9 g2 |0 V9 y4 ^* P1 }The only packages with no blocked ports at this time are the Server packages.
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+ B& Z) m) F9 ~2 E R* `2 VThe Blocked ports currently are:2 Y. M+ _" c+ a- Z9 f5 p& s
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TCP 21 (ftp)5 E7 I7 n7 b5 o6 w' [4 k
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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TCP 25 (smtp). A9 W* Q' D0 W- n2 q4 u6 ?3 w
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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8 `2 P: z% w! k" u* a" Z9 kTCP 80 (www)4 s" u- }" X- e* Y7 E% |
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.+ q8 F+ Y; Y/ `' V8 {% g4 w
+ B+ Z! t4 K7 c6 ^TCP 110 (pop3); M: T' Z L5 D3 j) O8 E7 j8 P- T
Customers 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." `" L9 x* K5 P4 u. o
2 g! @7 z. E2 p1 YTCP 6667 (ircd)$ Q0 Y) a6 {& ^- H/ m# H. M. \+ d0 k
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.
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TCP/UDP 135-139 (dcom and netbios)+ v' g+ c: N; s# h* R
These ports are commonly exploited by worm viruses:
" j% t6 c1 N( ]8 b9 K' w- x135 Windows RPC j: v8 p1 C+ g' Z
136 PROFILE Naming System (basically unused)
W$ v6 a$ ]3 Q* e6 L137-139 Windows NetBios
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TCP/UDP 445 (ms-ds)
+ Z' L* i+ H% C/ M, Q2 t6 FMicrosoft 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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- [2 F M; w) t t _+ ]0 KTCP/UDP 1433-1434 (ms-sql)9 G( N( N, {( S3 k h% L9 q; _
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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