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之前发过一个帖子有关Telus, Shaw 的比较,
3 P1 M' ~! R( `* r; T% {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。" j2 m+ n, a) H) K5 w+ s1 _9 u M( h+ g
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Does Telus block any ports? ; C! l3 B0 U1 @ I2 _% q
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The only packages with no blocked ports at this time are the Server packages.
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: v4 U) U+ J1 S/ ]The Blocked ports currently are:" V: j, d0 L5 o
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TCP 21 (ftp)2 k% C/ l7 I9 ?+ k7 U; S
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)
_( |" Y: T) s( m9 ?8 DCustomers 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./ T( g. v; o0 {4 V; s% g! g2 o
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TCP 80 (www)
- V5 M1 @$ f; h1 F1 XCustomers 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)
, B p# h/ L2 e0 V6 L0 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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7 k1 `1 a5 R- ^8 K3 z' VTCP 6667 (ircd) z `0 c2 |! n
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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% Q$ R4 s/ t' H2 l( H0 NTCP/UDP 135-139 (dcom and netbios)3 J+ d' ~# f% _* R" A5 v
These ports are commonly exploited by worm viruses:
2 L" j+ P' N: X; [" e8 d5 K5 q135 Windows RPC- f0 z7 G* N& }& }& t8 r9 h( |
136 PROFILE Naming System (basically unused)
9 z. |6 F+ Z1 B3 h137-139 Windows NetBios8 t4 z- a$ y" G" N7 w
- k1 ?7 Z8 K# s* R1 T* K3 cTCP/UDP 445 (ms-ds); r7 S' b7 o( n
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.* q! \3 F4 f% m' E; S
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TCP/UDP 1433-1434 (ms-sql)8 U8 ]! m2 w2 b% Q9 m; i
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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