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之前发过一个帖子有关Telus, Shaw 的比较,
: G- j6 p- X. ~. E6 u7 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。" P* G8 M- Z) F8 l
( b/ p1 f7 L: {- M1 P/ X2 PDoes Telus block any ports? 1 Q2 q7 b4 h% r; ]/ r" W, ]+ p# b8 l
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The only packages with no blocked ports at this time are the Server packages.
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The Blocked ports currently are:
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TCP 21 (ftp)
0 `5 z x) o9 K* G7 _( Z, }: P, XCustomers 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)
. g) o0 T; [% C+ N5 JCustomers 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.' `! z: [' n/ u
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TCP 80 (www); y. k' N0 c; G, j8 ^" n! m
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.- D1 N. E! C: a; b- {
* Q5 K) c6 ~" t2 `. x R& QTCP 110 (pop3)
. A. h; L: ^0 k1 K3 A$ aCustomers 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.; d+ m7 O2 F! t# F. l
1 T4 Y: a5 I+ D6 q$ P2 d! gTCP 6667 (ircd)
# o8 P' q! |# O+ OCustomers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.: q2 ^% b2 S$ c4 I6 V H4 Z
& O$ B) w8 k7 H h% d, jTCP/UDP 135-139 (dcom and netbios); i' _5 C: E1 ~6 |& @+ k% S9 B
These ports are commonly exploited by worm viruses:; X5 z6 W# j$ v
135 Windows RPC
# i* l, M% l7 V1 K- L6 M136 PROFILE Naming System (basically unused)
. O; w' h9 z, p+ R, l1 o137-139 Windows NetBios
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- q8 B! Z8 c3 Z% Y0 U5 x+ vTCP/UDP 445 (ms-ds)1 T# f1 j5 j( Y: r5 u) X% j
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.; J3 y: H! S, @0 O4 p
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TCP/UDP 1433-1434 (ms-sql), |% f: S8 x3 |! c. A3 I
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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