Configuring Cisco ASA 5510 as a basic router
Ok I'm trying to set up a Cisco ASA 5510 as a fairly basic Firewall Gateway but it doesn't seem to like me.
I've run through the ASDM interface and configured as far as I can see all the basics. So here's what I have so far:
E0/0 Outside interface 66.77.88.99/27
E0/1 Inside interface 192.168.5.254/24
E0/5 Management interface 192.168.100.1/24
Static route 0.0.0.0 0.0.0.0 Outside interface 66.77.88.88
DHCP is coming from a Windows Server as is DNS. This is where I seem to have the problem, if I assign a static IP to a client internet works fine. If I try to obtain a DHCP address it fails and doesn't recieve the traffic (as far as I can tell as if I plug in a basic netgear it all works). I don't really understand why as the clients+server are in the same switch so the Cisco should only be looking at traffic going from its LAN interface out to the WAN interface. Any help or basic configs I can try greatly appreciated.
I've run through the ASDM interface and configured as far as I can see all the basics. So here's what I have so far:
E0/0 Outside interface 66.77.88.99/27
E0/1 Inside interface 192.168.5.254/24
E0/5 Management interface 192.168.100.1/24
Static route 0.0.0.0 0.0.0.0 Outside interface 66.77.88.88
DHCP is coming from a Windows Server as is DNS. This is where I seem to have the problem, if I assign a static IP to a client internet works fine. If I try to obtain a DHCP address it fails and doesn't recieve the traffic (as far as I can tell as if I plug in a basic netgear it all works). I don't really understand why as the clients+server are in the same switch so the Cisco should only be looking at traffic going from its LAN interface out to the WAN interface. Any help or basic configs I can try greatly appreciated.
Last Comment
ck459
Can you attach your config, and tell what the ip address of the DHCP server is?
As per ck459's post,
Can we see your config?
Also, can you add the IPCONFIG /all information of a client on DHCP?
Can we see your config?
Also, can you add the IPCONFIG /all information of a client on DHCP?
ASKER
Hi, sorry for the delay back onsite now so have grabbed the config as below, external IP's changed for security but otherwise it's untouched.
Result of the command: "show run"
: Saved
:
ASA Version 8.0(2)
!
hostname CiscoASA
domain-name domainname.local
enable password ILK/PNop1C1uNCLy encrypted
names
!
interface Ethernet0/0
nameif WAN
security-level 0
ip address 77.88.99.11 255.255.255.224
!
interface Ethernet0/1
nameif LAN
security-level 50
ip address 192.168.50.254 255.255.255.0
!
interface Ethernet0/2
shutdown
no nameif
no security-level
no ip address
!
interface Ethernet0/3
shutdown
no nameif
no security-level
no ip address
!
interface Management0/0
nameif management
security-level 100
ip address 192.168.100.1 255.255.255.0
management-only
!
passwd 2KFQnbNIdI.2KYOU encrypted
ftp mode passive
clock timezone GMT/BST 0
clock summer-time GMT/BDT recurring last Sun Mar 1:00 last Sun Oct 2:00
dns server-group DefaultDNS
domain-name alchemypartners.local
object-group protocol DM_INLINE_PROTOCOL_1
protocol-object icmp
protocol-object udp
protocol-object tcp
object-group protocol DM_INLINE_PROTOCOL_2
protocol-object icmp
protocol-object udp
protocol-object tcp
object-group service DM_INLINE_SERVICE_1
service-object icmp echo
service-object icmp echo-reply
service-object tcp-udp eq domain
access-list management_nat0_outbound extended permit ip 192.168.50.0 255.255.255.0 192.168.1.0 255.255.255.0
access-list WAN_1_cryptomap extended permit ip 192.168.50.0 255.255.255.0 192.168.1.0 255.255.255.0
access-list LAN_access_in extended permit ip any any
access-list LAN_access_in extended permit object-group DM_INLINE_PROTOCOL_1 any 192.168.50.0 255.255.255.0
access-list LAN_access_in extended permit object-group DM_INLINE_PROTOCOL_2 192.168.50.0 255.255.255.0 any
access-list WAN_access_in extended permit object-group DM_INLINE_SERVICE_1 any 77.88.99.11 255.255.255.224
pager lines 24
logging enable
logging asdm informational
mtu WAN 1500
mtu LAN 1478
mtu management 1500
no failover
icmp unreachable rate-limit 1 burst-size 1
icmp permit any LAN
asdm image disk0:/asdm-602.bin
no asdm history enable
arp timeout 14400
global (WAN) 101 interface
nat (LAN) 101 0.0.0.0 0.0.0.0
nat (management) 0 access-list management_nat0_outbound
access-group WAN_access_in in interface WAN
access-group LAN_access_in in interface LAN
route WAN 0.0.0.0 0.0.0.0 77.88.99.12 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 uauth 0:05:00 absolute
dynamic-access-policy-record DfltAccessPolicy
http server enable
http 192.168.100.0 255.255.255.0 management
http 192.168.50.0 255.255.255.0 LAN
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 map WAN_map 1 match address WAN_1_cryptomap
crypto map WAN_map 1 set pfs
crypto map WAN_map 1 set peer 11.22.33.44
crypto map WAN_map 1 set transform-set ESP-3DES-SHA
crypto map WAN_map interface WAN
crypto isakmp enable WAN
crypto isakmp policy 10
authentication pre-share
encryption 3des
hash sha
group 2
lifetime 86400
no crypto isakmp nat-traversal
telnet 192.168.50.0 255.255.255.0 LAN
telnet 192.168.100.0 255.255.255.0 management
telnet timeout 5
ssh timeout 5
console timeout 0
management-access management
threat-detection basic-threat
threat-detection statistics access-list
!
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
group-policy 11.22.33.44 internal
group-policy 11.22.33.44 attributes
vpn-tunnel-protocol IPSec
tunnel-group 11.22.33.44 type ipsec-l2l
tunnel-group 11.22.33.44 ipsec-attributes
pre-shared-key *
prompt hostname context
Cryptochecksum:e5a2864f8300aaeefec46767308b2423
: end
ASKER
Ipconfig /release & /renew with the Cisco in use -
An error occurred while renewing interface Local Area Connection : unable to con
tact your DHCP server. Request has timed out.
ipconfig /all
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Marvell Yukon 88E8055 PCI-E Gigabit Ethernet Controller
Physical Address. . . . . . . . . : 00-A0-D1-C6-EC-C9
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::2074:b94b:b5ab:2fca%
Autoconfiguration IPv4 Address. . : 169.254.47.202(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1
fec0:0:0:ffff::2%1
fec0:0:0:ffff::3%1
NetBIOS over Tcpip. . . . . . . . : Enabled
An error occurred while renewing interface Local Area Connection : unable to con
tact your DHCP server. Request has timed out.
ipconfig /all
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Marvell Yukon 88E8055 PCI-E Gigabit Ethernet Controller
Physical Address. . . . . . . . . : 00-A0-D1-C6-EC-C9
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::2074:b94b:b5ab:2fca%
Autoconfiguration IPv4 Address. . : 169.254.47.202(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1
fec0:0:0:ffff::2%1
fec0:0:0:ffff::3%1
NetBIOS over Tcpip. . . . . . . . : Enabled
Can you also included an ipconfig /all ? I would like to see the settings you are receiving from your DHCP server. Do you get 192.168.50.254 as your default gateway, and what do you receive as DNS server ?
Also, try pinging 194.7.1.4 (public ip on the internet that can be reached via ping)
the try to ping www.google.com (will not reply, but should give an ip addres next to the domain name.
Also, try pinging 194.7.1.4 (public ip on the internet that can be reached via ping)
the try to ping www.google.com (will not reply, but should give an ip addres next to the domain name.
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ASKER
Thats what I would have thought but it only occurs when the Cisco is plugged in?
I'm running a Draytek 2820 at the moment as a quick fix - the Cisco/Draytek plug in to the exact same port with the exact same IP when I switch them over. Draytek works Cisco doesn't hence the config check??
The DHCP server plugs directly in to the switch and the Cisco then in to the same switch, I can't see how the Cisco could cause the issue but it only occurs when it's in use. Is the above config appropriate for the stated use? If so I'll have to start looking at other possible problems :S
I'm running a Draytek 2820 at the moment as a quick fix - the Cisco/Draytek plug in to the exact same port with the exact same IP when I switch them over. Draytek works Cisco doesn't hence the config check??
The DHCP server plugs directly in to the switch and the Cisco then in to the same switch, I can't see how the Cisco could cause the issue but it only occurs when it's in use. Is the above config appropriate for the stated use? If so I'll have to start looking at other possible problems :S
ASKER
Ok just quickly double checked and a little more confused now so Im hoping it's something stupid. When the Cisco is used the server can access the internet as it has a static IP (so I assumed this was why it was ok).
I've tried with a client plugged directly into the switch - it recieves no DHCP as stated but even assigning a static IP i cant ping anything externally - I can ping the server IP and the Cisco IP
I've tried with a client plugged directly into the switch - it recieves no DHCP as stated but even assigning a static IP i cant ping anything externally - I can ping the server IP and the Cisco IP
If you uplug the Cisco ASA, and only leave the client and the DHCP server connected to the switch, do you get an ip address then? SO don't connect any of your FW, but only the client and th server.
ASKER
Ok it was a mix of my stupidity and a possible Microsoft oversight?
I removed both the routers and as you'd expect from your comments there was infact no dhcp running (I had forgotten to disable it on the draytek after I'd had some issues). There was no dhcp running because after installing Hyper-V on 2008 it no longer sees the physical network adapter and so is no longer bound to it. After editing the registry key for the adapter to enter it's IP again dhcp sees the adapter and alls well.
Sorry for the wasted time :)
I removed both the routers and as you'd expect from your comments there was infact no dhcp running (I had forgotten to disable it on the draytek after I'd had some issues). There was no dhcp running because after installing Hyper-V on 2008 it no longer sees the physical network adapter and so is no longer bound to it. After editing the registry key for the adapter to enter it's IP again dhcp sees the adapter and alls well.
Sorry for the wasted time :)
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