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之前发过一个帖子有关Telus, Shaw 的比较, ' G/ ^+ _; E5 o c0 {* D: b
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。3 q7 d2 p( A# q5 {7 N
( D2 S. _0 h$ y( h, c: Z% F2 XDoes Telus block any ports? 2 s N% f9 v: t9 S' e7 {( S
( F4 y3 g9 s4 R T" C; W& zThe only packages with no blocked ports at this time are the Server packages. + R0 G' y' F5 G0 H% B
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The Blocked ports currently are:
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' ^% S# f P2 ^5 l( D0 GTCP 21 (ftp): z5 P5 t) d% X' f6 I2 z$ n
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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; s6 w( x. {' p ?TCP 25 (smtp)8 o `- \2 L& 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.) u8 U( _; Y/ n9 u# I9 n* m
& K8 c6 y+ C3 f% W) M+ ^4 lTCP 80 (www)
5 [# n3 J, z! c0 H! T/ KCustomers 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.: x6 M2 ], J+ w2 m
* j( Q1 U1 o' d0 p6 r" xTCP 110 (pop3)0 `5 z" p1 R3 B; Q0 V6 S2 ?
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.8 M a3 \) |, \ M& c4 F; D
9 z3 O; S, V }- \. iTCP 6667 (ircd)
) X5 h( R! e! ]4 h. ?, r6 a0 E* eCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.- i$ z5 I5 o' Q O% \- _/ s
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TCP/UDP 135-139 (dcom and netbios)' s( n \* y9 M
These ports are commonly exploited by worm viruses:1 M- z6 b1 r+ g4 D
135 Windows RPC e7 ?9 U" g4 @% C. r' O
136 PROFILE Naming System (basically unused)
+ D" S& C) q* h! v# E* I137-139 Windows NetBios7 u& \5 Q- _: B/ r
# J/ q% M$ y; [9 q- w% ]- r% fTCP/UDP 445 (ms-ds)
9 p, G; }: t( J8 a4 b5 R. SMicrosoft 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), ?" q, v2 _* v1 G: }
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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