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之前发过一个帖子有关Telus, Shaw 的比较, # {9 p3 M$ C& M
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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) L. \6 @- K/ p0 s* ZDoes Telus block any ports?
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The only packages with no blocked ports at this time are the Server packages.
% ~+ w7 [- d: p1 {* T3 _' s" @- ^- i# v& g
The Blocked ports currently are:$ \; `4 A, w' _& }
?; _' F# }: n- ]1 d- a" Z" o# fTCP 21 (ftp)
3 c7 X; M1 m1 [! B! k* ^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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, I. l/ |+ E' n% @) G0 ZTCP 25 (smtp)
8 v1 J9 T# I- F+ g6 ?- zCustomers 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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TCP 80 (www)
; U9 ~# [7 H5 ]0 V+ h% v/ QCustomers 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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4 L* a2 M) _! T2 i8 @7 o4 F. _9 OTCP 110 (pop3)$ z& Q0 L% q2 H" e) k* ?+ g* v6 n, z
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." C& X+ P, e: @5 k: L
, F& ?) J$ l. R! s* ETCP 6667 (ircd)& q$ I- Y% s0 _% O' P v0 A
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.+ u V+ {7 g5 p8 g6 m" U) N
3 F/ ` ?( q! I7 V3 {7 h A1 C, |TCP/UDP 135-139 (dcom and netbios)
7 k6 E9 A& | DThese ports are commonly exploited by worm viruses:/ E9 N- ?1 U3 F" H$ X) O
135 Windows RPC
8 G9 x& w- D8 v+ J+ K/ L136 PROFILE Naming System (basically unused)
) F- T* R- O4 p! ?+ y137-139 Windows NetBios! {+ j: ]' C1 n0 O2 \: _, W
) [6 s( i5 l, z( n2 V! v4 JTCP/UDP 445 (ms-ds)/ R8 u+ e& g4 c0 q, H
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.+ v( n: v! a6 G, z/ m. K- K6 w9 ]# @
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TCP/UDP 1433-1434 (ms-sql)
4 R$ H B% C. e! _) V" J* 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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