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之前发过一个帖子有关Telus, Shaw 的比较, O- Q! ?" y/ S
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。9 O. E% o3 m% {% ^( o
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Does Telus block any ports? ( u" q: x' x2 a @
% c1 E% p0 n5 t0 \9 X; qThe only packages with no blocked ports at this time are the Server packages. & c% D; X! c4 e) `
# J, `3 G! T# r6 t$ g& |: ZThe Blocked ports currently are: n9 A' B8 D7 N1 p4 @
1 i: i7 a. t8 F) K- b/ E5 o) V$ CTCP 21 (ftp)
! S$ s/ W7 {6 G- t: W% aCustomers 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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0 t v/ I* P& d1 a5 r9 c! qTCP 25 (smtp); y+ C; c) G, j7 _& h6 X( 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. O g+ i2 F6 _5 ~ E) q
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TCP 80 (www)
8 I3 |5 E0 X$ P: y, c- G* xCustomers 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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9 @3 ]) Q% x. d, r1 ATCP 110 (pop3)% R& k! p$ y9 i' e1 T
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.3 }7 {% o3 F7 O5 R5 ^( p! j
9 v& q" E& {! f: H5 F- tTCP 6667 (ircd)! n$ P/ |, l: A% {
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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TCP/UDP 135-139 (dcom and netbios)
1 B) o+ _6 _2 ^These ports are commonly exploited by worm viruses:+ R" F6 h& {; i0 d: a' n
135 Windows RPC
' t% D: g- |+ g/ l- I136 PROFILE Naming System (basically unused)# D. F/ _* H# ?& _
137-139 Windows NetBios K8 z+ P1 X& t* V! d0 I
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TCP/UDP 445 (ms-ds): m$ s. C6 s' V
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.( |% p1 [ e! {# K" Y ]; j
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TCP/UDP 1433-1434 (ms-sql)
) F- l/ Q0 w- \% j2 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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