Cisco PIX 501:Cannot browse network/use RDP from sites over VPN

[mysteryn11]

Config: ADSL modem (Netopia 4234 router), Cisco PIX 501, Cisco VPN Client version 4***

The problem here is that when connecting from the Cisco VPN client (version 4**) to the PIX one cannot either browse the network or contact the server (10.0.0.100) using RDP. However, this only happens from our offices which are, of course, behind other Cisco boxes. This is also the case from another IT supplier at another site accessing the same customer. When I do the same thing from home (a completely open non-walled connection) I connect and can use the RDP etc.

Ah! Says everybody – it’s a traversal or malformed packet size problem; but read on-

HOWEVER, (and this is the weird thing), I have several other customers with identical setups, where I have configured the box in 100% exactly the same way who I can connect to from work. This is really odd. I have even compared the config file setup between this PIX and one that works; no difference. Tried a different PIX box; no difference.


P.S. Already had ISP check their router, completely blank and reprogram it etc.


Here is the setup


PIX Version 6.3(5)
interface ethernet0 auto
interface ethernet1 100full
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password IPFoqBJWhamXzVnC encrypted
passwd 2KFQnbNIdI.2KYOU encrypted
hostname -name removed-
domain-name ciscopix.com
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 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
access-list bbf_splitTunnelAcl permit ip interface outside any
access-list outside_cryptomap_dyn_20 permit ip any 10.0.0.192 255.255.255.224
access-list outside_access_in permit tcp any eq https any
pager lines 24
mtu outside 1500
mtu inside 1500
ip address outside *.*.*.* 255.255.255.252
ip address inside 10.0.0.1 255.255.255.0
ip audit info action alarm
ip audit attack action alarm
ip local pool vpnusers 10.0.0.205-10.0.0.210 mask 255.255.255.0
pdm location *.*.*.* 255.255.255.192 outside
pdm location *.*.*.* 255.255.255.192 inside
pdm location 0.0.0.0 255.0.0.0 outside
pdm logging informational 100
pdm history enable
arp timeout 14400
global (outside) 1 interface
nat (inside) 1 0.0.0.0 0.0.0.0 0 0
access-group outside_access_in in interface outside
route outside 0.0.0.0 0.0.0.0 *.*.*.* 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 *.*.*.* 255.255.255.192 outside
http 0.0.0.0 255.0.0.0 outside
http 10.0.0.0 255.255.255.0 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-3DES-MD5 esp-3des esp-md5-hmac
crypto dynamic-map outside_dyn_map 20 match address outside_cryptomap_dyn_20
crypto dynamic-map outside_dyn_map 20 set transform-set ESP-3DES-MD5
crypto map outside_map 65535 ipsec-isakmp dynamic outside_dyn_map
crypto map outside_map interface outside
isakmp enable outside
isakmp nat-traversal 20
isakmp policy 20 authentication pre-share
isakmp policy 20 encryption 3des
isakmp policy 20 hash md5
isakmp policy 20 group 2
isakmp policy 20 lifetime 86400
vpngroup bbf address-pool vpnusers
vpngroup bbf dns-server 10.0.0.1 10.0.0.100
vpngroup bbf default-domain BERGEN_BROKER
vpngroup bbf split-tunnel bbf_splitTunnelAcl
vpngroup bbf idle-time 1800
vpngroup bbf password ********
telnet *.*.*.* 255.255.255.192 outside
telnet timeout 5
ssh timeout 5
console timeout 0
dhcpd address 10.0.0.2-10.0.0.33 inside
dhcpd lease 3600
dhcpd ping_timeout 750
dhcpd auto_config outside
terminal width 80
Cryptochecksum:ebaca9cbfb85d44933a4b33c473a4ef4
: end

 

[mysteryn11]

Found out the answer myself: Just add the following command
isakmp nat-traversal