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之前发过一个帖子有关Telus, Shaw 的比较,
( {- J8 Q) M2 W# \6 G9 q: t. q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。: C$ k, i* h: r% _; {& e
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Does Telus block any ports? ! K% T/ x8 M! E" S0 |1 `% p. E& z. J
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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:! j4 I4 Z6 ?( j; }" v7 Z
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TCP 21 (ftp)+ y5 c2 V# {8 V7 o {# [8 `
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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& Z# v' \: }: I; rTCP 25 (smtp)6 _( j4 O1 p3 Y0 W. t: E1 b N( ]: V
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." F/ Q( o% X; l4 z* S) U
$ R0 s5 r% L3 E. ?4 c# |TCP 80 (www)
9 A4 F& s _: ?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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6 f: P% F* R1 \' ~ G' c1 UTCP 110 (pop3)
, I$ a! F$ \: [7 e$ P. jCustomers 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.9 b. H1 X) I( F% d0 N
1 C* n7 v6 X; m6 K( DTCP 6667 (ircd)+ [$ e3 O8 [9 e8 U) G; o. W% Z
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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" N7 N" ?4 X; G- s5 F- ~1 RTCP/UDP 135-139 (dcom and netbios)3 _8 w3 Z" ]2 L
These ports are commonly exploited by worm viruses:0 n: {5 m, {9 O. g
135 Windows RPC3 w/ A" I( y0 r' [0 V; l8 E
136 PROFILE Naming System (basically unused)% J# w* C4 E$ {1 M" P
137-139 Windows NetBios2 W- y* k( V" |/ H2 i
& ]3 X, ?$ _' O7 |TCP/UDP 445 (ms-ds)! E5 l: x# W# q! J( q- G! i
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.
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7 L( u* h) z: M% N' HTCP/UDP 1433-1434 (ms-sql)
. n# b1 s& \& o" f5 J' G5 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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