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之前发过一个帖子有关Telus, Shaw 的比较， 6 ]) J8 }; }2 C3 D
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。4 L8 b+ m! C( L2 e) |
- e3 {( ?* @& U% L% M$ o2 EDoes Telus block any ports?
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The only packages with no blocked ports at this time are the Server packages.
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The Blocked ports currently are:
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TCP 21 (ftp)
3 w& E( E: Q$ h) e- SCustomers 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.; A, z0 k% y, |* F. Q0 z
8 G1 E1 m0 |# ]& zTCP 25 (smtp)& A/ c- X( V7 S+ l# 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.; P5 O! {" N8 @( V2 M
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TCP 80 (www)$ E5 m9 T* ~: ?# X! c
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./ A/ ~$ y" j) Y8 N! u% X
7 g9 q! Z+ A& W0 q; u% JTCP 110 (pop3)! _: b4 [" H' ]( o
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.
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2 a5 @4 L( B: f: t: m: c/ `& @TCP 6667 (ircd)+ B" F' u9 X M3 d' }# N# O
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.' q1 r% m3 b, \' p0 Q4 Y2 V
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TCP/UDP 135-139 (dcom and netbios)/ r/ |9 x, [6 h2 o9 Q/ D
These ports are commonly exploited by worm viruses:
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# s3 Q2 ~$ h z+ K+ v4 H# L136 PROFILE Naming System (basically unused)$ U$ K8 n, L* K1 ~' L1 \
137-139 Windows NetBios$ R2 b, ?- Q( X
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TCP/UDP 445 (ms-ds)
! Y3 w( |$ [. V$ K) hMicrosoft 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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TCP/UDP 1433-1434 (ms-sql)
4 }6 w; g# z: KMicrosoft 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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发表于 2009-11-7 17:58
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