Kein Ping von der PIX 501 zum ISA Server möglich

Hallo Leute,

vielleicht könnt ihr mir bei diesen Problem vielleicht weiter helfen.
Folgende Situation, in der Zentralle steht ein ISA Server und in den Filialen Cisco PIX´n 501. Die PIX´n bauen eine Site to Site IPSEC Verbindung zum ISA Server auf.

Regeln "IP und ICMP any " auf der PIX zum ISA, vom ISA zur PIX "Gesamter Verkehr zugelassen"

Ich kann von der Zentralle alle Geräte am Remotestandort pingen aber die PIX nicht.
Von einer Workstation am Remote Standort können alle Geräte in der Zentralle gepingt werden.

Kann aber von der PIX per Website oder Console den Remotestandort nicht pingen und laut ISA log kommen auch keine Pakete an.

HELP ME!!!

PIXGM# show config
PIX Version 6.3(5)
interface ethernet0 10baset
interface ethernet1 100full
nameif ethernet0 outside security0
nameif ethernet1 inside security100
hostname PIX
domain-name domain
clock timezone CEST 1
clock summer-time CEDT recurring last Sun Mar 2:00 last Sun Oct 3:00
fixup protocol dns maximum-length 512
fixup protocol ftp 21
fixup protocol h323 h225 1720
fixup protocol h323 ras 1718-1719
fixup protocol http 80
fixup protocol pptp 1723
fixup protocol rsh 514
fixup protocol rtsp 554
fixup protocol sip 5060
fixup protocol sip udp 5060
fixup protocol skinny 2000
fixup protocol smtp 25
fixup protocol sqlnet 1521
fixup protocol tftp 69
names
name 192.168.0.0 ISA
name 0.0.0.0 intern
name 192.168.1.252 DC03
access-list inside_outbound_nat0_acl permit ip 192.168.1.0 255.255.255.0 ISA 255.255.255.0
access-list outside_cryptomap_20 permit ip 192.168.1.0 255.255.255.0 ISA 255.255.255.0
access-list inside_access_in permit ip 192.168.1.0 255.255.255.0 any
access-list outside_access_in permit icmp any any echo-reply
access-list ping_acl permit icmp any any
pager lines 24
logging on
logging console warnings
logging monitor warnings
logging buffered warnings
logging trap warnings
icmp permit ISA 255.255.255.0 outside
icmp permit 192.168.1.0 255.255.255.0 inside
mtu outside 1500
mtu inside 1500
ip address outside 1.1.1.2 255.255.255.0
ip address inside 192.168.1.254 255.255.255.0
ip verify reverse-path interface outside
ip audit info action alarm
ip audit attack action alarm
pdm location 192.168.1.0 255.255.255.0 inside
pdm location ISA 255.255.255.0 outside
pdm history enable
arp timeout 14400
global (outside) 1 interface
nat (inside) 0 access-list inside_outbound_nat0_acl
nat (inside) 1 192.168.1.0 255.255.255.0 0 0
access-group ping_acl in interface outside
access-group inside_access_in in interface inside
route outside intern intern 1.1.1.1 1
route outside ISA 255.255.255.0 2.2.2.2 1
timeout xlate 0:05:00
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 rpc 0:10:00 h225 1:00:00
timeout h323 0:05:00 mgcp 0:05:00 sip 0:30:00 sip_media 0:02:00
timeout sip-disconnect 0:02:00 sip-invite 0:03:00
timeout uauth 0:05:00 absolute
aaa-server TACACS+ protocol tacacs+
aaa-server TACACS+ max-failed-attempts 3
aaa-server TACACS+ deadtime 10
aaa-server RADIUS protocol radius
aaa-server RADIUS max-failed-attempts 3
aaa-server RADIUS deadtime 10
aaa-server LOCAL protocol local
http server enable
http ISA 255.255.255.0 outside
http 192.168.1.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server community public
no snmp-server enable traps
floodguard enable
sysopt connection permit-ipsec
crypto ipsec transform-set ESP
crypto map outside_map 20
crypto map outside_map 20
crypto map outside_map 20
crypto map outside_map 20 set peer 2.2.2.2
crypto map outside_map 20
crypto map outside_map 20
crypto map outside_map interface outside
isakmp enable outside
isakmp key address 2.2.2.2 netmask 255.255.255.255
isakmp policy 20
isakmp policy 20
isakmp policy 20
isakmp policy 20
isakmp policy 20
telnet ISA 255.255.255.0 outside
telnet 192.168.1.0 255.255.255.0 inside
telnet timeout 5
console timeout 0
dhcpd auto_config outside
terminal width 80