<div>
!(Inside server)192.168.1.10 --&gt; 172.20.1.20 (DMZ server)<br />
<br />
!defining acl with interface<br />
<br />
access-group DMZtoInside in interface DMZ<br />
access-group InsidetoDMZ in interface inside<br />
<br />
<br />
!example of static NAT<br />
<br />
static (inside,DMZ) 172.20.1.5 192.168.2.20 netmask 255.255.255.255<br />
<br />
!DMZ back to Inside server<br />
access-list DMZtoInside permit tcp host 172.20.1.20 host 172.20.1.5 eq 27000 <br />
<br />
!inside server access to DMZ<br />
access-list InsidetoDMZ permit tcp host 192.168.1.10 host 192.168.2.20 eq 27000 
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!(Inside server)192.168.1.10 --> 172.20.1.20 (DMZ server)

!defining acl with interface

access-group DMZtoInside in interface DMZ
access-group InsidetoDMZ in interface inside


!example of static NAT

static (inside,DMZ) 172.20.1.5 192.168.2.20 netmask 255.255.255.255

!DMZ back to Inside server
access-list DMZtoInside permit tcp host 172.20.1.20 host 172.20.1.5 eq 27000

!inside server access to DMZ
access-list InsidetoDMZ permit tcp host 192.168.1.10 host 192.168.2.20 eq 27000

<div>
If the internal servers are a subnet 192.x.x.0/24 how do I<br />
adjust the ACL accordingly
</div>


If the internal servers are a subnet 192.x.x.0/24 how do I
adjust the ACL accordingly

<div>
You will need to adjust both the NAT and ACL to the /24 subnet for both DMZ and Inside.<br />
<br />

</div>


You will need to adjust both the NAT and ACL to the /24 subnet for both DMZ and Inside.



<div>
<div class="content wysiwyg-content">
I have some &quot;Internal&quot; servers 192.x.x.x trying to telnet to a &quot;DMZ&quot; server 172.x.x.x on port 27000 and connection keeps failing. What access list rule via ASDM or CLI should I insert to get this working.
</div>
</div>


I have some "Internal" servers 192.x.x.x trying to telnet to a "DMZ" server 172.x.x.x on port 27000 and connection keeps failing. What access list rule via ASDM or CLI should I insert to get this working.

Cisco ASA ACL

Cisco PIX is a dedicated hardware firewall appliance; the Cisco Adaptive Security Appliance (ASA) is a firewall and anti-malware security appliance that provides unified threat management and protection the PIX does not. Other Cisco devices and systems include routers, switches, storage networking, wireless and the software and hardware for PIX Firewall Manager (PFM), PIX Device Manager (PDM) and Adaptive Security Device Manager (ASDM).

Cisco

Software firewalls, also known as host-based firewalls, provide a layer of software on one host that controls network traffic in and out of that single machine. Most operating systems now include firewall software, but many available software firewalls include central distribution, antivirus systems and disaster recovery.

Software Firewalls

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