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之前发过一个帖子有关Telus, Shaw 的比较, , ^8 m8 B3 o2 d1 q8 o; W, 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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Does Telus block any ports? + C! g) s' W! x9 N
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The only packages with no blocked ports at this time are the Server packages. ( [0 p+ P2 \* H7 D% v+ M6 R
^3 G, S* t+ `% N' NThe Blocked ports currently are:5 D% m' _5 q6 e6 a! [, S7 I) ^$ r% }
. j9 a! b$ M4 _- g1 rTCP 21 (ftp)
# O, Y/ f% Q) b/ ~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)
! m, i2 f" |* W X$ j3 V9 uCustomers 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 g* R# N9 L( g+ H" i( cTCP 80 (www) E4 u) z; }& p( D5 Z
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.& L. O* I" N5 `8 C
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TCP 110 (pop3)
3 e* a& R: d) `4 ? d& n2 FCustomers 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.5 E. t+ {$ e1 a% H ^: t( j5 P% T
2 M& H6 M$ {" |1 x' a4 mTCP 6667 (ircd)
. s1 G* P5 Q& a" Y( M1 r/ r5 F# I4 UCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.& w7 V, ]8 n1 {# H! t$ Q
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TCP/UDP 135-139 (dcom and netbios)
: }- p, X7 j) ?4 G0 I" Z! [These ports are commonly exploited by worm viruses:, P( m, b7 S6 Q" ?. _3 n
135 Windows RPC; d8 a3 k% U' L( G
136 PROFILE Naming System (basically unused)! ^* I1 f0 h" O5 C
137-139 Windows NetBios
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, u2 e% Y* P% dTCP/UDP 445 (ms-ds)
+ Q/ y, b8 U" W/ Q5 O# a3 BMicrosoft 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)$ W1 D$ Z* D8 e) I& }0 z8 d# }3 x
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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