I have my 806 connected to Comcast below is my configuration. Hope it helps you
Route IOS version - c806-k9osy6-mz.122-11.t.bin
Configuration:
!
version 12.2
no parser cache
no service pad
service timestamps debug uptime
service timestamps log uptime
service password-encryption
!
hostname xxxx
!
enable secret
!
username xxxx privilege 15 password 7
ip subnet-zero
ip name-server 68.39.224.5
ip name-server 68.39.224.6
ip dhcp excluded-address 10.10.10.1
ip dhcp excluded-address 68.37.x.x 68.37.x.x
!
ip dhcp pool client
network 10.10.10.0 255.255.255.0
dns-server 68.39.x.x 68.39.x.x
domain-name comcast.net
default-router 10.10.10.1
lease infinite
!
ip inspect name myfw cuseeme timeout 3600
ip inspect name myfw ftp timeout 3600
ip inspect name myfw http timeout 3600
ip inspect name myfw rcmd timeout 3600
ip inspect name myfw realaudio timeout 3600
ip inspect name myfw smtp timeout 3600
ip inspect name myfw tftp timeout 30
ip inspect name myfw udp timeout 15
ip inspect name myfw tcp timeout 3600
ip inspect name myfw h323 timeout 3600
!
partition flash 2 6 2
!
!
!
!
interface Loopback0
ip address 10.1.1.1 255.255.255.255
!
interface Ethernet0
ip address 10.10.10.1 255.255.255.0
ip nat inside
no cdp enable
hold-queue 32 in
hold-queue 100 out
!
interface Ethernet1
mac-address 0002.1764.73b9
ip address dhcp client-id Ethernet1
ip access-group 111 in
ip nat outside
ip inspect myfw out
no keepalive
no cdp enable
!
ip nat inside source list 102 interface Ethernet1 overload
ip classless
ip http server
ip pim bidir-enable
!
!
access-list 102 permit ip 10.10.10.0 0.0.0.255 any
access-list 111 permit icmp any any administratively-prohibited
access-list 111 permit icmp any any packet-too-big
access-list 111 permit icmp any any time-exceeded
access-list 111 permit icmp any any traceroute
access-list 111 permit icmp any any unreachable
access-list 111 permit udp any eq bootps any eq bootpc
access-list 111 permit udp any eq bootps any eq bootps
access-list 111 permit udp any eq domain any
access-list 111 permit udp any any eq isakmp
access-list 111 permit tcp any any eq telnet
access-list 111 permit tcp any any gt 1023 established
access-list 111 permit tcp any any eq 6699
access-list 111 permit udp any any eq 6257
access-list 111 permit tcp any any eq 6346 established
access-list 111 permit ahp any any
access-list 111 permit esp any any
access-list 111 deny icmp any any echo-reply
no cdp run
!
line con 0
exec-timeout 120 0
password 7
logging synchronous
login
stopbits 1
line vty 0 4
exec-timeout 120 0
password 7
login
length 0
!
scheduler max-task-time 5000
end
