Cisco VPN Client 4.8 with soho 97 ADSL router

Hello to all!   I have a rare problem with a client VPN 4,8 and soho97, in principle the connection settles down correctly, but I do not have ping, safe to a servant, but sometimes I connect myself and I do not have to that and if to another servant, of any way, single I have ping, and I cannot be connected no servant of the network.  Somebody knows because?    
Greetings!


admin#show running-config
Building configuration...

Current configuration : 2415 bytes
!
version 12.3
no service pad
service timestamps debug uptime
service timestamps log uptime
service password-encryption
!
hostname admin
!
boot-start-marker
boot-end-marker
!
no logging buffered
enable secret 5 $1$ZKU0$.******
!
aaa new-model
!
!
aaa authentication login userauthen local
aaa authorization network groupauthor local
!
aaa session-id common
!
resource policy
!
ip subnet-zero
no ip dhcp use vrf connected
!
!
no ip domain lookup
!
!
!
username admin password 7 ****
!
!
!
crypto isakmp policy 3
 encr 3des
 authentication pre-share
 group 2
!
crypto isakmp client configuration group 3000client
 key ******
 dns 192.168.20.2
 domain maioris.pri
 pool ippool
 acl 108
!
!
crypto ipsec transform-set myset esp-3des esp-sha-hmac
!
crypto dynamic-map dynmap 10
 set transform-set myset
!
!
crypto map clientmap client authentication list userauthen
crypto map clientmap isakmp authorization list groupauthor
crypto map clientmap client configuration address respond
crypto map clientmap 10 ipsec-isakmp dynamic dynmap
!
!
!
interface Ethernet0
 description CRWS Generated text. Please do not delete this:192.168.20.1-255.255
.255.0
 ip address 192.168.20.1 255.255.255.0
 ip nat inside
 no ip mroute-cache
 hold-queue 100 out
!
interface ATM0
 no ip address
 no ip route-cache
 no atm ilmi-keepalive
 dsl operating-mode auto
!
interface ATM0.1 point-to-point
 ip address *.*.79.17 255.255.255.192
 ip nat outside
 no ip route-cache
 crypto map clientmap
 pvc 8/32
  encapsulation aal5snap
 !
!
ip local pool ippool 14.1.1.100 14.1.1.200
ip classless
ip route 0.0.0.0 0.0.0.0 ATM0.1
no ip http server
no ip http secure-server
!
ip nat inside source route-map nonat interface ATM0.1 overload
!
access-list 102 permit ip any any
access-list 108 permit ip 192.168.20.0 0.0.0.255 14.1.1.0 0.0.0.255

route-map nonat permit 10
 match ip address 102
!
!
control-plane
!
!
line con 0
 exec-timeout 120 0
 no modem enable
 stopbits 1
line aux 0
line vty 0 4
 exec-timeout 120 0
 password 7 ***
 length 0
!
scheduler max-task-time 5000
end

admin#