port range from outside to inside

[gary.grobe]

For an ASA 5505 and I need to open up a range of ports from 28300 - 28400 and 28600 - 28700, all for access from the outside interface to any machine on the inside interface. Can anyone help out with this?

# sh running-config

: Saved                             

:     

ASA Version 7.2(4)

!                 

hostname ciscoasa

enable password 8HgaP2T2asdbjsx1GBdq encrypted

passwd Ku287h/3Z9f25tj6 encrypted         

names                           

!   

interface Vlan1

nameif inside

security-level 100

ip address 192.168.1.1 255.255.255.0

!                                     

interface Vlan2

nameif outside

security-level 0

ip address dhcp setroute

!                         

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

!                   

ftp mode passive

pager lines 24 

logging asdm informational

mtu inside 1500           

mtu outside 1500

icmp unreachable rate-limit 1 burst-size 1

no asdm history enable                   

arp timeout 14400     

global (outside) 1 interface

nat (inside) 1 0.0.0.0 0.0.0.0

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                   

http server enable                                         

http 192.168.1.0 255.255.255.0 inside

no snmp-server location             

no snmp-server contact

snmp-server enable traps snmp authentication linkup linkdown coldstart

telnet timeout 5                                                     

ssh scopy enable

ssh 192.168.1.0 255.255.255.0 inside

ssh timeout 5                       

console timeout 0

dhcpd auto_config outside

!                       

dhcpd address 192.168.1.2-192.168.1.254 inside

dhcpd enable inside                           

!                 

!

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

prompt hostname context           

Cryptochecksum:9977cf711682d26e5ca49800ac4e94c0

: end                                        

[Nagaraja Thanthry]

Hello,

Are you doing it for a specific application? I see from your configuration that you are using dynamic PAT. So, there is no point in opening those ports as they will not be mapped to any device. I would suggest you using inspects for opening those ports dynamically (as long as it is one of the standard applications supported by the firewall).

Hope this helps.

Regards,

NT

[gary.grobe]

Yeah, it's specific for a Matlab application. I will soon add a static IP to the outside interface. It's basically a default config right now.

[Nagaraja Thanthry]

Hello,

As long as you are assigning public IP to every host that needs the port to be opened, then you can use the following statement:

access-list permit tcp any host range 28300 28400

access-list permit tcp any host range 28600 28700

You need to repeat the above lines for every host.If every inside device has a corresponding public IP and you want it to be open for everybody, then replace the "host public IP" by "any".

Hope this helps.

Regards,

NT