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之前发过一个帖子有关Telus, Shaw 的比较,
/ ~2 |4 t8 u( R! e: o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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2 _! q( z( W7 j# h2 ^4 N- t6 iDoes Telus block any ports? " T$ @0 p! J' p7 s7 {" I# d2 [
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The only packages with no blocked ports at this time are the Server packages.
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/ G( r) ]- o C0 j( h5 G; F0 dThe Blocked ports currently are:% B' L2 {/ ~) i6 v" y
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TCP 21 (ftp)0 s' N+ w8 F# o! @- h
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)8 s3 Z4 ^3 U; G: c; B
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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7 f K" h& g; j/ g) \5 S( [TCP 80 (www); Q5 r8 |/ T- V$ t2 |9 z, q" \
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)- h8 \% n! B2 F7 t" q
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.% Z% g# u* M$ k
: }7 i+ I0 m- k7 N. u4 u* |' m+ B7 sTCP 6667 (ircd)3 A" H( @7 A2 r
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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/ D J- e& ], u2 d& D0 o+ l& bTCP/UDP 135-139 (dcom and netbios)9 N+ u# i5 A( g4 K1 q* I$ Q( Y
These ports are commonly exploited by worm viruses:$ y) ^- F, w$ I5 N6 c
135 Windows RPC) @4 g- m- m- {& R. Y2 s8 u: W/ u n
136 PROFILE Naming System (basically unused)
4 Q' O0 |3 A2 m. f7 S: j, \& ?, p137-139 Windows NetBios2 m! B+ T: A* S( H
1 i7 Y) W. {) ]* I7 M: nTCP/UDP 445 (ms-ds)1 I0 R5 m: i5 Q/ J$ }) r
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.! d {+ p; X7 Y' w. g
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TCP/UDP 1433-1434 (ms-sql)# N$ c4 L0 z/ q# N
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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