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之前发过一个帖子有关Telus, Shaw 的比较, $ e* W, V0 e$ P8 N& n7 @
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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/ U& r" T" U$ dDoes Telus block any ports?
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0 O3 j1 T! R4 M5 q; S1 }. NThe only packages with no blocked ports at this time are the Server packages.
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& W7 F" z. I. e4 K7 ]The Blocked ports currently are:' E$ [1 Q# l9 c" C- C! d2 H
8 ? Q* S3 \, F& s4 KTCP 21 (ftp)
. M, ~4 u0 {/ k, @0 G: z+ zCustomers 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.- E5 |) z% s2 ?8 p# m+ Y% M
! M3 b# Y2 G2 i! W3 _6 fTCP 25 (smtp)5 ~6 w0 N! e- z) |
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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+ W# O7 w1 Z: \TCP 80 (www)
; ^: Q! m/ K3 `% X2 VCustomers 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)
- n. h Y9 ?2 {( t @# YCustomers 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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TCP 6667 (ircd)
, W2 G: L( Z' A5 J& l: q& |Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.0 M; T% W0 e/ [" |
; F g$ B1 ^+ Q8 ]3 zTCP/UDP 135-139 (dcom and netbios)! C0 u6 s W2 R! N* Z$ A, Y; ^5 p
These ports are commonly exploited by worm viruses:# u/ V6 `2 j% [6 l
135 Windows RPC h- @, f# [7 p, E: o/ g9 O! Z
136 PROFILE Naming System (basically unused). O5 {7 U \0 ~9 n% |4 e' Q' F/ Z. q
137-139 Windows NetBios
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- Y( ~& a; D, R4 C& f8 X4 PTCP/UDP 445 (ms-ds)" Z: M/ q3 [0 K; f
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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TCP/UDP 1433-1434 (ms-sql)6 w/ ^9 z5 Q0 Q0 p" V
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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