 鲜花( 87)  鸡蛋( 1)
|
之前发过一个帖子有关Telus, Shaw 的比较, 4 `2 K" y% \2 X5 e( F
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。% h' w) z; e3 s* M( ]- G2 b
+ B/ V3 t' d {3 C% o" jDoes Telus block any ports? * V# \, C- n1 V, x3 x1 i! J
* D5 F/ y |: ^; v7 L6 g( I, K# n. YThe only packages with no blocked ports at this time are the Server packages.
! n2 O) c3 _+ f& A3 j' @9 Z' s8 k1 ~! A! N5 \
The Blocked ports currently are:; i& s9 c$ L4 V; k7 I- U& c# U
" L. h" G3 Y/ I3 W
TCP 21 (ftp)8 \- g' b" w, m Y# D
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.9 P- m( h$ ^+ n8 g: d+ l$ @" h( t4 L0 N
. K8 m$ @+ w% o/ s) H w* P; T
TCP 25 (smtp); Q8 N* Y! p [
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.
6 e0 V# X/ q3 G6 ^% d
) k8 Y6 M: v9 _; CTCP 80 (www)2 q/ g! M; b9 t4 I# M0 p1 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.
. f. w3 q! E7 v- H n0 T6 S Z9 N7 j' ~3 _2 p, `6 K
TCP 110 (pop3)
# B# Z y% U! u5 `" Q0 r/ R$ y1 g) zCustomers 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., ^ w# R( L/ q7 ?. q! s
. S2 m+ W, d; j+ L* f9 x
TCP 6667 (ircd)( _7 m! x6 U* t
Customers running a IRC server (Internet Relay Chat) will no longer be able to have Internet users connect to the server.! q% `# u& @# E3 H! H4 t1 h
. p5 l3 v0 c" g) E2 m m" N
TCP/UDP 135-139 (dcom and netbios)
" v% ?/ D& }3 XThese ports are commonly exploited by worm viruses:7 J) B( ?, U; o( I R+ ~8 H$ [
135 Windows RPC
/ W! A+ Q6 [' F; b* d" e! c. v' U+ c136 PROFILE Naming System (basically unused)6 b% s4 y. v* R+ Q8 ?
137-139 Windows NetBios
# I3 V( \! G, K. c: f1 S* b8 g: b9 Z; }% a& o }: \
TCP/UDP 445 (ms-ds)8 x8 Y" x/ _" E. Q1 Z- R% t
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.4 Y1 i2 L% u) D5 ~5 ~
# @/ G6 A0 C& c8 j! I' B5 y
TCP/UDP 1433-1434 (ms-sql)
$ {! c% N" x6 }! p$ wMicrosoft 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. |
|