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Cisco VPN Expert Needed - Can't get DHCP to work over VPN (ASA5510/ASA5505)
I need help getting DHCP relay to work on a Cisco VPN. I have a simple network setup. There are two sites:
Main site: Windows SBS 2003 server (providing DHCP services for the network). About 20 client computers. Has Cisco ASA 5510 firewall (see ASA5510 config file below). This network is on the 192.168.1.x address scheme.
Remote site: Has a Cisco ASA 5505, remote printer, and 1 computer. I'd like this computer to get its IP address from the Windows SBS server, so it can be virtually part of the main sites network. I can't get a device from this remote network to pick up an IP over the VPN to the Windows SBS Server, even with DHCP relay enabled on the remote side.
The main and remote site have a site to site VPN setup that is working.
The configs for the units are below (the second config starts around line 213). Any ideas?
Main site: Windows SBS 2003 server (providing DHCP services for the network). About 20 client computers. Has Cisco ASA 5510 firewall (see ASA5510 config file below). This network is on the 192.168.1.x address scheme.
Remote site: Has a Cisco ASA 5505, remote printer, and 1 computer. I'd like this computer to get its IP address from the Windows SBS server, so it can be virtually part of the main sites network. I can't get a device from this remote network to pick up an IP over the VPN to the Windows SBS Server, even with DHCP relay enabled on the remote side.
The main and remote site have a site to site VPN setup that is working.
The configs for the units are below (the second config starts around line 213). Any ideas?
ASA5510:
: Saved
:
ASA Version 8.0(4)
!
hostname AdminASA5510
domain-name adminasa.kcfd20.org
enable password * encrypted
passwd * encrypted
names
name 74.94.67.57 Station21
name 192.168.21.0 station21-network
dns-guard
!
interface Ethernet0/0
description IP: 74.93.110.249-253
nameif outside
security-level 1
ip address 74.93.110.249 255.255.255.248
!
interface Ethernet0/1
shutdown
no nameif
no security-level
no ip address
!
interface Ethernet0/2
nameif Inside
security-level 15
ip address 192.168.1.1 255.255.255.0
!
interface Ethernet0/3
shutdown
no nameif
no security-level
no ip address
!
interface Management0/0
nameif management
security-level 100
ip address 192.168.2.1 255.255.255.0
management-only
!
boot system disk0:/asa804-k8.bin
ftp mode passive
clock timezone PST -8
clock summer-time PDT recurring 1 Sun Apr 2:00 last Sun Oct 2:00
dns domain-lookup outside
dns server-group DefaultDNS
name-server 208.67.222.222
name-server 208.67.220.220
name-server 68.87.69.146
domain-name adminasa.kcfd20.org
access-list inside_access_in extended permit ip any any
access-list inbound extended permit tcp any host 74.93.110.250 eq 9100
access-list inbound extended permit tcp any interface outside eq www
access-list inbound extended permit tcp any interface outside eq https
access-list inbound extended permit tcp any interface outside eq 4125
access-list inbound extended permit tcp any interface outside eq 3389
access-list inbound extended permit udp any host 192.168.1.10 eq domain
access-list inbound extended permit tcp any interface outside eq smtp
access-list inbound extended permit tcp any interface outside eq pop3
access-list inbound extended permit tcp any interface outside eq ftp
access-list inbound extended permit tcp any interface outside eq imap4
access-list outside_access_out extended permit ip interface outside any
access-list management_nat0_outbound extended permit ip any 192.168.1.192 255.255.255.192
access-list management_nat0_outbound extended permit ip 192.168.1.0 255.255.255.0 host Station21
access-list management_nat0_outbound extended permit ip station21-network 255.255.255.0 192.168.1.0 255.255.255.0
access-list vpn_splitTunnelAcl standard permit any
access-list no-nat extended permit ip 192.168.1.0 255.255.255.0 station21-network 255.255.255.0
access-list Inside_cryptomap extended permit ip 192.168.1.0 255.255.255.0 station21-network 255.255.255.0
access-list Inside_cryptomap extended permit ip host 192.168.1.10 host Station21
pager lines 24
logging enable
logging buffer-size 8192
logging asdm informational
mtu outside 1500
mtu Inside 1500
mtu management 1500
ip local pool VPNIPs 192.168.1.220-192.168.1.230 mask 255.255.255.0
no failover
icmp unreachable rate-limit 1 burst-size 1
asdm image disk0:/asdm-61551.bin
no asdm history enable
arp timeout 14400
global (outside) 1 interface
nat (Inside) 0 access-list no-nat
nat (Inside) 1 0.0.0.0 0.0.0.0
nat (management) 0 access-list management_nat0_outbound
static (Inside,outside) tcp interface www 192.168.1.10 www netmask 255.255.255.255 dns
static (Inside,outside) tcp interface https 192.168.1.10 https netmask 255.255.255.255 dns
static (Inside,outside) tcp interface smtp 192.168.1.10 smtp netmask 255.255.255.255 dns
static (Inside,outside) tcp interface 4125 192.168.1.10 4125 netmask 255.255.255.255 dns
static (Inside,outside) tcp interface pop3 192.168.1.10 pop3 netmask 255.255.255.255 dns
static (Inside,outside) tcp interface ftp 192.168.1.10 ftp netmask 255.255.255.255 dns
static (Inside,outside) tcp interface imap4 192.168.1.10 imap4 netmask 255.255.255.255 dns
static (Inside,outside) udp interface dnsix 192.168.1.10 dnsix netmask 255.255.255.255
static (Inside,outside) tcp interface 3389 192.168.1.10 3389 netmask 255.255.255.255 dns
access-group inbound in interface outside
route outside 0.0.0.0 0.0.0.0 74.93.110.254 1
timeout xlate 3:00:00
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02
timeout sunrpc 0:10:00 h323 0:05:00 h225 1:00:00 mgcp 0:05:00 mgcp-pat 0:05:00
timeout sip 0:30:00 sip_media 0:02:00 sip-invite 0:03:00 sip-disconnect 0:02:00
timeout sip-provisional-media 0:02:00 uauth 0:05:00 absolute
dynamic-access-policy-record DfltAccessPolicy
http server enable
http 192.168.2.0 255.255.255.0 management
http 192.168.1.0 255.255.255.0 Inside
http 192.168.0.0 255.255.255.0 Inside
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart
crypto ipsec transform-set ESP-3DES-SHA esp-3des esp-sha-hmac
crypto ipsec transform-set ESP-AES-256-MD5 esp-aes-256 esp-md5-hmac
crypto ipsec transform-set ESP-DES-SHA esp-des esp-sha-hmac
crypto ipsec transform-set ESP-DES-MD5 esp-des esp-md5-hmac
crypto ipsec transform-set ESP-AES-192-MD5 esp-aes-192 esp-md5-hmac
crypto ipsec transform-set ESP-3DES-MD5 esp-3des esp-md5-hmac
crypto ipsec transform-set ESP-AES-256-SHA esp-aes-256 esp-sha-hmac
crypto ipsec transform-set ESP-AES-128-SHA esp-aes esp-sha-hmac
crypto ipsec transform-set ESP-AES-192-SHA esp-aes-192 esp-sha-hmac
crypto ipsec transform-set ESP-AES-128-MD5 esp-aes esp-md5-hmac
crypto ipsec security-association lifetime seconds 28800
crypto ipsec security-association lifetime kilobytes 4608000
crypto dynamic-map outside_dyn_map 20 set pfs group1
crypto dynamic-map outside_dyn_map 20 set transform-set ESP-3DES-SHA
crypto dynamic-map outside_dyn_map 20 set security-association lifetime seconds 28800
crypto dynamic-map outside_dyn_map 20 set security-association lifetime kilobytes 4608000
crypto dynamic-map outside_dyn_map 40 set pfs group1
crypto dynamic-map outside_dyn_map 40 set transform-set ESP-3DES-SHA
crypto dynamic-map outside_dyn_map 40 set security-association lifetime seconds 28800
crypto dynamic-map outside_dyn_map 40 set security-association lifetime kilobytes 4608000
crypto dynamic-map outside_dyn_map 60 set pfs group1
crypto dynamic-map outside_dyn_map 60 set transform-set ESP-3DES-SHA
crypto dynamic-map outside_dyn_map 60 set security-association lifetime seconds 28800
crypto dynamic-map outside_dyn_map 60 set security-association lifetime kilobytes 4608000
crypto map outside_map 10 match address Inside_cryptomap
crypto map outside_map 10 set peer Station21
crypto map outside_map 10 set transform-set ESP-AES-256-SHA
crypto map outside_map 10 set security-association lifetime seconds 28800
crypto map outside_map 10 set security-association lifetime kilobytes 4608000
crypto map outside_map 65535 ipsec-isakmp dynamic outside_dyn_map
crypto map outside_map interface outside
crypto isakmp enable outside
crypto isakmp policy 10
authentication pre-share
encryption 3des
hash sha
group 2
lifetime 86400
no crypto isakmp nat-traversal
telnet 192.168.1.10 255.255.255.255 Inside
telnet timeout 5
ssh timeout 5
console timeout 0
management-access management
threat-detection basic-threat
threat-detection statistics port
threat-detection statistics protocol
threat-detection statistics access-list
no threat-detection statistics tcp-intercept
webvpn
enable outside
group-policy vpn_1 internal
group-policy vpn_1 attributes
wins-server value 192.168.1.10
dns-server value 192.168.1.10
vpn-tunnel-protocol IPSec
split-tunnel-policy tunnelspecified
split-tunnel-network-list value vpn_splitTunnelAcl
username * password * encrypted privilege 14
username * password * encrypted
tunnel-group 74.94.67.57 type ipsec-l2l
tunnel-group 74.94.67.57 ipsec-attributes
pre-shared-key *
!
class-map inspection_default
match default-inspection-traffic
!
!
policy-map type inspect dns migrated_dns_map_1
parameters
message-length maximum 512
policy-map global_policy
class inspection_default
inspect dns migrated_dns_map_1
inspect ftp
inspect h323 h225
inspect h323 ras
inspect rsh
inspect rtsp
inspect esmtp
inspect sqlnet
inspect skinny
inspect sunrpc
inspect xdmcp
inspect sip
inspect netbios
inspect tftp
!
service-policy global_policy global
smtp-server 192.168.1.10
prompt hostname context
Cryptochecksum:*
: end
asdm image disk0:/asdm-61551.bin
asdm location 74.93.110.249 255.255.255.255 outside
asdm location 74.93.110.250 255.255.255.255 Inside
asdm location 192.168.1.10 255.255.255.255 Inside
asdm location Station21 255.255.255.255 management
asdm location station21-network 255.255.255.0 management
no asdm history enable
ASA5505
: Saved
:
ASA Version 8.0(4)
!
hostname st21asa5505
domain-name station21.kcfd20.org
enable password * encrypted
passwd * encrypted
names
name 192.168.21.0 inside-network
name 192.168.21.40 station-printer
name 74.93.110.249 Admin_Building
!
interface Vlan1
nameif inside
security-level 100
ip address 192.168.21.1 255.255.255.0
!
interface Vlan2
nameif outside
security-level 0
ip address 74.94.67.57 255.255.255.252
!
interface Ethernet0/0
switchport access vlan 2
!
interface Ethernet0/1
!
interface Ethernet0/2
!
interface Ethernet0/3
!
interface Ethernet0/4
!
interface Ethernet0/5
!
interface Ethernet0/6
!
interface Ethernet0/7
!
banner motd Message of the Day!
boot system disk0:/asa804-k8.bin
ftp mode passive
clock timezone PST -8
clock summer-time PDT recurring
dns domain-lookup inside
dns server-group DefaultDNS
name-server 208.67.220.220
name-server 208.67.222.222
domain-name station21.kcfd20.org
access-list inside_access_in extended permit ip any any
access-list inbound extended permit tcp any interface outside eq 9100
access-list inbound extended permit tcp any interface outside eq www
access-list inbound extended permit tcp any interface outside eq https
access-list no-nat extended permit ip inside-network 255.255.255.0 192.168.1.0 255.255.255.0
access-list 5510 extended permit ip inside-network 255.255.255.0 192.168.1.0 255.255.255.0
access-list inside_cryptomap extended permit ip inside-network 255.255.255.0 192.168.1.0 255.255.255.0
access-list inside_cryptomap extended permit ip host 74.94.67.57 host 192.168.1.10
pager lines 24
logging enable
logging asdm informational
mtu inside 1500
mtu outside 1500
icmp unreachable rate-limit 1 burst-size 1
asdm image disk0:/asdm-61551.bin
no asdm history enable
arp timeout 14400
global (outside) 1 interface
nat (inside) 0 access-list no-nat
nat (inside) 1 0.0.0.0 0.0.0.0
static (inside,outside) tcp interface www station-printer www netmask 255.255.255.255 dns
static (inside,outside) tcp interface 9100 station-printer 9100 netmask 255.255.255.255 dns
access-group inside_access_in in interface inside
access-group inbound in interface outside
route outside 0.0.0.0 0.0.0.0 74.94.67.58 1
timeout xlate 3:00:00
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02
timeout sunrpc 0:10:00 h323 0:05:00 h225 1:00:00 mgcp 0:05:00 mgcp-pat 0:05:00
timeout sip 0:30:00 sip_media 0:02:00 sip-invite 0:03:00 sip-disconnect 0:02:00
timeout sip-provisional-media 0:02:00 uauth 0:05:00 absolute
dynamic-access-policy-record DfltAccessPolicy
http server enable
http inside-network 255.255.255.0 inside
http 74.93.110.0 255.255.255.0 outside
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart
crypto ipsec transform-set ESP-3DES-SHA esp-3des esp-sha-hmac
crypto ipsec transform-set ESP-AES-256-MD5 esp-aes-256 esp-md5-hmac
crypto ipsec transform-set ESP-DES-SHA esp-des esp-sha-hmac
crypto ipsec transform-set ESP-DES-MD5 esp-des esp-md5-hmac
crypto ipsec transform-set ESP-AES-192-MD5 esp-aes-192 esp-md5-hmac
crypto ipsec transform-set ESP-3DES-MD5 esp-3des esp-md5-hmac
crypto ipsec transform-set ESP-AES-256-SHA esp-aes-256 esp-sha-hmac
crypto ipsec transform-set ESP-AES-128-SHA esp-aes esp-sha-hmac
crypto ipsec transform-set ESP-AES-192-SHA esp-aes-192 esp-sha-hmac
crypto ipsec transform-set ESP-AES-128-MD5 esp-aes esp-md5-hmac
crypto ipsec security-association lifetime seconds 28800
crypto ipsec security-association lifetime kilobytes 4608000
crypto map outside_map 1 match address 5510
crypto map outside_map 1 set peer Admin_Building
crypto map outside_map 1 set transform-set ESP-AES-256-SHA
crypto map outside_map 1 set security-association lifetime seconds 28800
crypto map outside_map 1 set security-association lifetime kilobytes 4608000
crypto map outside_map interface outside
crypto isakmp enable outside
crypto isakmp policy 10
authentication pre-share
encryption 3des
hash sha
group 2
lifetime 86400
no crypto isakmp nat-traversal
telnet inside-network 255.255.255.0 inside
telnet 192.168.1.0 255.255.255.0 inside
telnet timeout 5
ssh timeout 5
console timeout 0
management-access inside
dhcpd dns 208.67.220.220 208.67.222.222
!
dhcpd address 192.168.21.50-192.168.21.60 inside
dhcpd dns 208.67.220.220 192.168.1.10 interface inside
!
dhcprelay server 192.168.1.10 outside
dhcprelay enable inside
dhcprelay setroute inside
dhcprelay timeout 90
threat-detection basic-threat
threat-detection statistics access-list
no threat-detection statistics tcp-intercept
username * password * encrypted
username * password * encrypted
tunnel-group 74.93.110.249 type ipsec-l2l
tunnel-group 74.93.110.249 ipsec-attributes
pre-shared-key *
!
class-map inspection_default
match default-inspection-traffic
!
!
policy-map type inspect dns preset_dns_map
parameters
message-length maximum 512
policy-map global_policy
class inspection_default
inspect dns preset_dns_map
inspect ftp
inspect h323 h225
inspect h323 ras
inspect rsh
inspect rtsp
inspect esmtp
inspect sqlnet
inspect skinny
inspect sunrpc
inspect xdmcp
inspect sip
inspect netbios
inspect tftp
!
service-policy global_policy global
smtp-server 192.168.1.10
prompt hostname context
Cryptochecksum:*
: end
asdm image disk0:/asdm-61551.bin
asdm location Admin_Building 255.255.255.255 inside
no asdm history enable
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ASKER
MikeKane: I'll look into that. Thank you.
MWEComputers: I cleared all of the DHCPD lines (337-340 in the config), although the ASDM showed the DHCP server as not enabled, just the configuration information from when it was. I'll give it a go, thanks.
MWEComputers: I cleared all of the DHCPD lines (337-340 in the config), although the ASDM showed the DHCP server as not enabled, just the configuration information from when it was. I'll give it a go, thanks.
ASKER
JFrederick29 - No dice.....
MikeKane: I'll give that a try.....
MWE Computers: Here is what I get on the remote unit when I query the DHCP Relay state:
st21asa5505(config)# show dhcprelay state
Context Configured as DHCP Relay
Interface inside, Configured for DHCP RELAY SERVER
Interface outside, Configured for DHCP RELAY
st21asa5505(config)#
MikeKane: I'll give that a try.....
MWE Computers: Here is what I get on the remote unit when I query the DHCP Relay state:
st21asa5505(config)# show dhcprelay state
Context Configured as DHCP Relay
Interface inside, Configured for DHCP RELAY SERVER
Interface outside, Configured for DHCP RELAY
st21asa5505(config)#
On the SBS server, are you using ISA as well or not?
What result do you get if you do 'show dhcprelay statistics'?
A DHCP scope for the 192.168.21.0/24 subnet exists on the DHCP server, right?
Try this instead:
On the 5510:
conf t
no access-list Inside_cryptomap extended permit ip host 192.168.1.10 host Station21
access-list Inside_cryptomap extended permit udp host 192.168.1.10 eq bootps host Station21
On the 5505:
conf t
no access-list 5510 extended permit ip host 74.94.67.57 host 192.168.1.10
access-list 5510 extended permit udp host 74.94.67.57 host 192.168.1.10 eq bootps
Also, as I just posted, make sure a scope exists for the 192.168.21.0/24 subnet on the DHCP server.
On the 5510:
conf t
no access-list Inside_cryptomap extended permit ip host 192.168.1.10 host Station21
access-list Inside_cryptomap extended permit udp host 192.168.1.10 eq bootps host Station21
On the 5505:
conf t
no access-list 5510 extended permit ip host 74.94.67.57 host 192.168.1.10
access-list 5510 extended permit udp host 74.94.67.57 host 192.168.1.10 eq bootps
Also, as I just posted, make sure a scope exists for the 192.168.21.0/24 subnet on the DHCP server.
ASKER
Thanks, I'll give that a try on Saturday.
ASKER
I ended up using alternate solution (using the router as the DHCP server and using the main site for DNS server info). Thanks for staying with it.
ASKER