Allow ip addresses for RDP

Hi,
I have a Cisco 887 behind my ISP modem.
Is setup a inbound NAT-rule to router the 3389-port to a server.
How can i setup the firewall to allow only ip address i've added in the rule?
Below you''l find my configuration:
version 12.4no service padservice tcp-keepalives-inservice tcp-keepalives-outservice timestamps debug datetime msec localtime show-timezoneservice timestamps log datetime msec localtime show-timezoneservice password-encryptionservice sequence-numbers!hostname Cisco877!boot-start-markerboot-end-marker!logging buffered 51200logging console criticalenable secret 5 $1$Zw/5$a5r6xtBQsVR40v27N1uBP/!no aaa new-modelclock timezone PCTime -8clock summer-time PCTime date Apr 6 2003 2:00 Oct 26 2003 2:00!crypto pki trustpoint TP-self-signed-3329446285 enrollment selfsigned subject-name cn=IOS-Self-Signed-Certificate-3329446285 revocation-check none rsakeypair TP-self-signed-3329446285!!crypto pki certificate chain TP-self-signed-3329446285 certificate self-signed 01  3082023E 308201A7 A0030201 02020101 300D0609 2A864886 F70D0101 04050030   31312F30 2D060355 04031326 494F532D 53656C66 2D536967 6E65642D 43657274   69666963 6174652D 33333239 34343632 3835301E 170D3132 31323035 31303333   35345A17 0D323030 31303130 30303030 305A3031 312F302D 06035504 03132649   4F532D53 656C662D 5369676E 65642D43 65727469 66696361 74652D33 33323934   34363238 3530819F 300D0609 2A864886 F70D0101 01050003 818D0030 81890281   81009475 F7B360BF 10A5F0F0 B031341A 5E969804 171E3070 4539CC44 3C43F4B1   9BC3050A B401D3E1 B72D7061 3EDA7ACE 69C9B97D A8110577 5465AA89 B87932D2   A35208A5 C53B7967 098E0E60 CF0FFB44 DB4BB355 6A53F872 90421142 8308CE5D   0D8E33E5 2C56C19B 3FD59DB1 8E816305 1A298873 2EEBB2B1 9E4EFA47 FF304797   34550203 010001A3 66306430 0F060355 1D130101 FF040530 030101FF 30110603   551D1104 0A300882 06526F75 74657230 1F060355 1D230418 30168014 6779AC0C   F43AE5E1 134304F6 5E2A5059 02F1B711 301D0603 551D0E04 16041467 79AC0CF4   3AE5E113 4304F65E 2A505902 F1B71130 0D06092A 864886F7 0D010104 05000381   81002A9A 9F20A8FF 81B275E9 92A32D01 FEC789BB 928CCFB1 2741D3AF 17795AD5   59D56D81 4BC6A4C5 4AFF9207 DC35EA9C D93B53DE 47F315F7 A158ADB3 E6133418   A678C128 79EA4643 5BA45B44 94DD42CE BC2FC144 A9406783 F9092BF5 9B37C358   E273DB2F 44FFC382 1EB013A0 A01F6A3D DF7C7FA2 1DC24436 36B7F07E 1EA52843 FDA8   quitdot11 syslogno ip source-routeip cef!!no ip dhcp use vrf connected!ip dhcp pool sdm-pool1   import all   network 192.168.0.0 255.255.255.0   default-router 192.168.0.1    dns-server 195.238.2.21 !!no ip bootp server!multilink bundle-name authenticated!archive log config  hidekeys!!ip tcp synwait-time 10no ip ftp passiveip ssh time-out 60ip ssh authentication-retries 2!!!interface BRI0 no ip address encapsulation hdlc shutdown!interface ATM0 no ip address shutdown no atm ilmi-keepalive dsl operating-mode auto !interface FastEthernet0 description WAN_Link switchport access vlan 2!interface FastEthernet1!interface FastEthernet2!interface FastEthernet3!interface Vlan1 description $ETH-SW-LAUNCH$$INTF-INFO-HWIC 4ESW$$ES_LAN$$FW_INSIDE$ ip address 192.168.0.1 255.255.255.0 no ip redirects no ip unreachables no ip proxy-arp ip flow ingress ip nat inside ip virtual-reassembly!interface Vlan2 ip address 192.168.254.2 255.255.255.0 ip nat outside ip virtual-reassembly crypto map SDM_CMAP_1!ip forward-protocol ndip route 0.0.0.0 0.0.0.0 192.168.254.1!!ip http serverip http authentication localip http secure-serverip http timeout-policy idle 60 life 86400 requests 10000ip nat inside source list 101 interface Vlan2 overloadip nat inside source static tcp 192.168.0.10 3389 192.168.254.2 3389 extendable!logging trap debuggingaccess-list 100 permit ip 172.16.0.0 0.0.255.255 192.168.1.0 0.0.0.255access-list 101 permit ip 192.168.0.0 0.0.0.255 anyno cdp run!!!!control-plane!banner login ^CCCCAuthorized access only!Disconnect IMMEDIATELY if you are not an authorized user!^C!line con 0 login local no modem enable transport output telnetline aux 0 login local transport output telnetline vty 0 4 privilege level 15 login local transport input telnet ssh!scheduler max-task-time 5000scheduler allocate 4000 1000scheduler interval 500end

Instead of configuring NAT on the ISP-device as suggested by jumora, I would do it differently: Reconfigure the ISP-modem to be a real modem (at the moment it is configured as a router) so that you have your public IP on the router. Then you can control firewalling and NAT completely on the router.
Don't stop after you've improved your network! Improve the world by lending money to the working poor:
http://www.kiva.org/invitedby/karsteni

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