Oracle Database Discussions

I have next structure:
client server |--- firewall ---| database server
I have installed CMAN on the client machine:
IP-adress 10.8.1.10

tnsnames.ora

DB=
  (DESCRIPTION=
    (ADDRESS=
      (PROTOCOL=tcp)
      (HOST=10.8.1.10)
      (PORT=1630))
    (CONNECT_DATA=
      (SERVICE_NAME=DB)))

cman.ora

cman=
(configuration=
  (address=(protocol=tcp)(host=hostname)(port=1630))
  (rule_list=
    (rule=
       (src=hostname)(dst=127.0.0.1)(srv=cmon)(act=accept)
       (action_list=(aut=off)(mct=120)(mit=30)(conn_stats=on))
    )
    (rule=
       (src=*)(dst=*)(srv=db)(act=accept)
       (action_list=(aut=off)(moct=0)(mct=0)(mit=0)(conn_stats=on))
    )
  )
  (parameter_list =(log_level=admin)(trace_level=admin))
)

Database server parameters:
IP-adress: 10.8.0.10

tnsnames.ora

CMAN_LISTENER=
 (DESCRIPTION=
  (ADDRESS_LIST=
   (ADDRESS=(PROTOCOL=tcp)(HOST=10.8.1.10)(PORT=1630)))
   (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = DB))
  )

alter system set remote_listener=CMAN_LISTENER scope=both;
System altered.

But when I try to connect e.g. through sqlplus from client to server I see:

C:\Documents and Settings\Administrator>sqlplus "sys@DB as sysdba"

SQL*Plus: Release 11.1.0.6.0 - Production on Mon May 25 13:58:40 2009

Copyright (c) 1982, 2007, Oracle.  All rights reserved.

Enter password:
ERROR:
ORA-12529: TNS:connect request rejected based on current filtering rules

So, how should I configure the cman.ora for work through cman_listener? Is there mistake?

P.S.
Sorry for my english.