Why doesn't RDP go through the Cisco 881?

Question

Cisco

There is a config... A simple network, plus VPN tunnels. From under the VPN, inside the RDP network to the address 192,168,5,112, it goes fine ...
But from the outside - for a reason that is not clear to me, it stupidly does not work.
This is what show says when I try to connect from home:

Router0(config)#do show ip nat translations  | include 3389
tcp ххх.28.110.78:3389  192.168.5.112:3389 zzz.154.99.159:51798 zzz.154.99.159:51798

I assume that the packet dies somewhere on the output of vlan1 ...
Actually the config itself

Router0(config)#do sh run
Building configuration...

Current configuration : 3607 bytes
!
! Last configuration change at 21:56:34 Russian Sat Aug 30 2014 by enginee
version 15.3
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname Router0
!
boot-start-marker
boot-end-marker
!
!
!
aaa new-model
!
!
aaa authentication login default local
aaa authentication ppp default local
aaa authorization network default local
!
!
!
!
!
aaa session-id common
memory-size iomem 10
clock timezone Russian 10 0
!
!
!
ip dhcp excluded-address 192.168.5.1
ip dhcp excluded-address 192.168.5.1 192.168.5.20
ip dhcp excluded-address 192.168.5.50
ip dhcp excluded-address 192.168.5.111
ip dhcp excluded-address 192.168.5.112
!
ip dhcp pool LAN
 network 192.168.5.0 255.255.255.0
 default-router 192.168.5.1
 dns-server 192.168.5.1
!
!
!
ip domain name cisco
ip name-server 81.17.2.171
ip inspect name INSPECT_OUT dns
ip inspect name INSPECT_OUT icmp router-traffic
ip inspect name INSPECT_OUT ntp
ip inspect name INSPECT_OUT tcp router-traffic
ip inspect name INSPECT_OUT udp router-traffic
ip inspect name INSPECT_OUT http
ip inspect name INSPECT_OUT https
ip inspect name INSPECT_OUT ftp
ip inspect name INSPECT_OUT sip
ip inspect name INSPECT_OUT router
ip inspect name INSPECT_OUT smtp
ip inspect name INSPECT_OUT pptp
ip cef
no ipv6 cef
!
!
vpdn enable
!
vpdn-group ZENIT
 ! Default PPTP VPDN group
 accept-dialin
  protocol pptp
  virtual-template 1
!
!
!
license udi pid CISCO881-K9 sn ---
!
!
archive
 log config
  logging enable
  hidekeys
username admin privilege 5 secret 5 --------
!
!
ip ssh time-out 60
ip ssh authentication-retries 2
ip ssh version 2
!
!
!
!
interface Loopback0
 no ip address
!
interface FastEthernet0
 no ip address
!
interface FastEthernet1
 no ip address
!
interface FastEthernet2
 no ip address
!
interface FastEthernet3
 no ip address
!
interface FastEthernet4
 description ==INTERNET==
 ip address xx.28.110.78 255.255.255.252
 ip access-group FIREWALL in
 no ip redirects
 no ip proxy-arp
 ip nat outside
 ip inspect INSPECT_OUT out
 ip virtual-reassembly in
 ip verify unicast reverse-path
 duplex auto
 speed auto
 no cdp enable
!
interface Virtual-Template1
 ip unnumbered Vlan1
 peer default ip address pool ZENIT
 no keepalive
 ppp authentication pap
!
interface Vlan1
 description ==LAN==
 ip address 192.168.5.1 255.255.255.0
 ip access-group FIREWALL_OUT in
 ip accounting output-packets
 ip nat inside
 ip virtual-reassembly in
!
ip local pool ZENIT 192.168.5.200 192.168.5.250
ip forward-protocol nd
no ip http server
no ip http secure-server
!
ip dns server
ip nat inside source list NAT_ACL interface FastEthernet4 overload
ip nat inside source static tcp 192.168.5.112 3389 interface FastEthernet4 3389
ip nat inside source static tcp 192.168.5.112 4888 interface FastEthernet4 4888
ip route 0.0.0.0 0.0.0.0 xx.28.110.77
!
ip access-list extended FIREWALL
 permit tcp any any eq 22
 permit tcp any any eq 4888
 permit tcp any any eq 3389
 permit tcp any host xx.28.110.78 eq 3389
 permit icmp any any
 permit tcp any any eq 1723
 permit gre any any
ip access-list extended FIREWALL_DENY
ip access-list extended FIREWALL_OUT
 permit ip any any
ip access-list extended NAT
ip access-list extended NAT_ACL
 permit ip 192.168.5.0 0.0.0.255 any
!
!
!
!
!
!
line con 0
 no modem enable
line aux 0
line vty 0 4
 privilege level 15
 transport input telnet ssh
!
!
end

Answer 1

Understood the problem. The problem is banal to disgrace. My predecessor did something on the RDP server and he worked with the external server through hamach. As a result, I didn’t want to miss anything from the outside ... I apologize for not answering for so long.

Answer 2

try like this

Answer 3

But from the outside - for a reason not clear to me, it stupidly does not work.

What is meant by this? Is the timeout expiring or is the server sending an RST segment?
In the second case, check the server settings (firewall in particular).
You can check if traffic is reaching the server using wireshark/tshark (I'm assuming the server is running windows).

Answer 4

At you the static address is registered. Why then specify the interface in the DST_NAT settings? Specify external ip:
ip nat inside source static tcp 192.168.5.112 3389 interface xx.28.110.78 3389
ip nat inside source static tcp 192.168.5.112 4888 interface xx.28.110.78 4888