Cisco Firewall :: DMZ Access To Internet And See Inside On ASA 5520

Sep 23, 2012

I am new in ASA, I have the DMZ (10.1.1.0/24) configured on ASA 5520 and I achieve the reach Internet from DMZ (10.1.1.0/24), but now need reach DMZ from inside (172.16.12.0/24) and inside (172.16.12.0/24) from DMZ  (10.1.1.0/24), in other words round trip.

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Cisco Firewall :: 5520 Can't Access From DMZ To INSIDE

Mar 13, 2012

I have a cisco asa 5520 ios 8.2. This is my configuration [code] But i can not access from DMZ to INSIDE.

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Cisco Firewall :: 5520 Can't Get Traffic From Inside To Internet

Nov 27, 2011

I am trying to make a basic config on my 5520. The first goal is to make trafic from inside to outside.The internet address is 64.28.29.200 and the default internet gw is 64.28.20.193What am I missing since I can not get trafic from inside to the internet? [code]

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Cisco Firewall :: No Internet Access From Inside Network Of PIX 525?

Dec 11, 2012

I am working on pix 525, when connected through console I can access the whole internet but when i connect the pc to the inside interface i have no access to the internet. the pc can ping the pix inside interface and from pix i can ping the pc. My configuration is shown below.

PIX Version 7.2(2)
!
hostname pix
domain-name xyz.edu.pk
enable password xxxxxxxx encrypted

[code]....

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Cisco Firewall :: How To Access ASA 5500 Via SSH From Internet To Inside Interface

Mar 9, 2011

administrator wants  to manage ASA 5500 using inside interface.{telnet or ssh].Allowed telnet and ssh in ASA 5500 but unable to get access from administrator PC..Is there a way to do it without enabling NAT on the ASA? Will a specific rule on ASA allow adminstrator to access ASA 5500 inside interface via ssh or telnet?

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Cisco Firewall :: 8771 - Access Two Servers On Inside From Internet Using RDP

Aug 8, 2012

I have a customer with an 877ISR with zone base firewall. They want to access two servers on the inside from the internet using RDP but with different ports.

Partial configuration.
 
interface Dialer0
description $FW_OUTSIDE$
ip address negotiated
no ip redirects
no ip unreachables(code)

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Cisco Firewall :: ASA 5505 / Cannot Access Internet Or Ping From Inside Interface?

Jul 26, 2011

I am having a problem configuring my ASA 5505 for NAT.

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Cisco Firewall :: 5520 / Add NAT For Outside X.x.x.77 Going Inside X.x.x.22 Port 80?

Oct 3, 2012

I have an ASA 5520 Cisco Adaptive Security Appliance Software Version 8.4(2)8 Device Manager Version 6.4(5)206. I am trying to add a nat for outside x.x.x.77 port going inside x.x.x.22 port 80 . the wan interface is .74 with subnet of 255.255.255.248 the rule will add but traffic wont pass in.

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Cisco Firewall :: 5520 - Traffic From Inside To Outside

Mar 2, 2011

I am setting up a pair of 5520 in A/S mode but the traffic from inside to outside seems blocked somehow.

asa01# sh run : Saved
ASA Version 8.3(1)
host name asa01
enable password LFJ8dTG1HExu/pWQ encrypted
password 2KFQnbNIdI.2KYOU encrypted
names
[code]......

Base on the above configuration, I still cannot ping or HTTP.

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Cisco Firewall :: ASA 5520 NAT And DMZ / Inside Network Configuration?

Jan 27, 2013

I am trying to configure a server(192.168.5.50) in DMZ(192.168.5.0/24) to be able to communicate with a domain controller(10.5.44.220) in the inside network(10.5.44.0/24). I made some configuration using ASDM(not familiar with the CLI) but not working and it caused existing NAT not to work, for example RDP(TCP 3389) connection to 38.96.179.220
 
The things I am trying to achieve are
 
1. two way commucation between 192.168.5.50 in DMZ and 10.5.44.220 in Inside for SecureAuthPorts and SecureAuthOutbound service groups

2. NAT for 192.168.5.50 mapping 38.96.179.50 for the service groups mentioned above

3. NAT for other hosts already existing

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Cisco Firewall :: ASA 5520 - PING From Outside Into Inside Host

May 13, 2013

I have ASA 5520. I cannot ping the host(192.168.1.20) which is inside firewall from outside hosts. Inside host (192.168.1.20) is translated into (198.24.210.226) using static NAT.From outside host, I used "PING 198.24.210.226".  Is it because I used dynamic PAT for inside hosts?

interface GigabitEthernet0/0nameif outsidesecurity-level 0ip address 198.24.210.230 255.255.255.248!interface GigabitEthernet0/1nameif insidesecurity-level 100ip address 192.168.1.1 255.255.255.0

[Code].....

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Cisco Firewall ::5520 - NAT SIP Registration From Outside To Inside Interface On ASA?

Mar 7, 2012

I'm trying to NAT SIP registration from OUTSIDE interface to Inside interface on ASA

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Cisco Firewall :: ASA 5520 - Static Route To Inside Interface

Mar 29, 2011

I have inherited an ASA 5520.  In doing some auditing of the setup, I have noticed a Static Route that has the inside interface of the ASA as the Gateway IP.  I am trying to understand the purpose of this route or why a route would be setup this way.

Example Static Route:
Inside 10.xx.31.0 255.255.255.0 10.xx.xx.10 (10.xx.xx.10 is the inside interface of ASA)

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Cisco Firewall :: ASA 5520 - Permit Traffic To Inside Via MAC - Address?

Apr 6, 2011

I have a handheld device that will be used for inventory outside of our office. It has 3g capabilities. Is there anyway I can permit traffic from this device from the outside world coming into my network?  I need to open a couple of ports so it can hit the server. But I have no intention to open these ports up to the entire world.  I use an ASA 5520 with a managed router from our provider. I looked around on the Cisco site and the only information I found was for permitting and denying traffic from devices that are within the network.

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Cisco Firewall :: Configure Secondary IP On Inside Interface Of ASA 5520?

Nov 24, 2012

We already have a subnet defined to inside interface and is in produciton. the default gateway is this interface ip. In that setup now I have to add one more subnet and as the first subnet is been defined in ASA indside interface, I have to assign secondary Ip to the inside interface so that new subnet users can easily reach here and go outside.

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Cisco Firewall :: ASA 5520 / Deny IP Spoof On Interface Inside

Jun 17, 2012

I'm trying to attach tacacs server (ACS Version 5.2) in server group on ASA 5520 (Version 8.4). When I test connection in ASDM (Version 6.4) between ASA and ACS it fails. The log message on ASA is:
 
%ASA-2-106016: Deny IP spoof from (10.8.27.126) to 10.8.48.10 on interface inside.
 
Packet-tracer from ASA is:
 
InternetASA# packet-tracer input inside tcp 10.8.27.126 4444 10.8.48.10 49
 Phase: 1
Type: CAPTURE
Subtype:
Result: ALLOW
Config:
Additional Information:
MAC Access list

[code]....
 
What access-list or implicit rule may be the reason of denying these packets?

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Cisco Firewall :: ASA 5520 With 9.0.1 IOS - Capture To Inside Interface Not Supported

Dec 9, 2012

I recently upgraded my 5520 to 9.0.1 IOS.  Today I tried to apply a capture to my inside interface referencing a simple ACL and I get this error.
 
ERROR: Capture doesn't support access-list <capin> containing mixed policies
 
I also created a capture for the outside interface with a similar ACL and it worked just fine.  I can't seem to find anything on the web that gives me a clue to resolving the error above. 

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Cisco Firewall :: Unable To Ping Inter Interface (inside To Outside) Of ASA 5520

Jul 26, 2011

I am unable to ping inside interface (Rin) to outside interface (Rout) of my Cisco ASA 5520 runing on ASA Version 8.4(1). 
 
ASA Version 8.4(1)
!
hostname FW5520

[Code].....

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Cisco Firewall :: Asa 5520 / Configure Two Static Nat Statements From Inside To Outside And Backup Interface?

Oct 16, 2011

I have a asa 5520 with an outside and backup interface. I am trying to configure two static nat statements from the inside to the outside and backup interface. Here is what I have configured so far.

object network obj-10.1.1.254
host 10.1.1.254
object network obj-10.1.1.254
nat (inside,outside) static 172.25.10.3
 
I want to also use nat (inside,backup) static 172.25.10.3

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Cisco Firewall :: 5520 - Inside Server To See Actual Outside Host Source IP In Udp Packet

Mar 3, 2013

I have a 5520 in production at a customer's site between an outside 802.11 network and an inside server.   The server can get to outside hosts OK, and the traffic is being NATed  properly, and sockets initiated by the server on the inside can pass data both ways, but I need to allow outside hosts the ability to send  'announcement' UDP packets to the inside server.  I thought this might be an  outside-NAT-required issue to get the traffic routed, but I need the inside server to see the  actual outside host source IP in the UDP packet, so I basically set the  outside host up similar to the inside host, just without the NAT table on the firewall -- it's subnet is outside the  destination (inside server) subnet, and its gateway is the outside  interface of the ASA, the same way the inside server is able to get to  hosts outside.  The firewall should just route the packet with a destination of the inside subnet once it sees that it hits a 'permit' ACL.
 
I have the appropriate ACL's set up, and when I do 'show access-list' I  see policy hits for the 'permit' statements where the outside host is  generating the announcement and it's hitting the ACL.  I even duplicated  the ACL into list 101 and 102, and applied 101 for inbound traffic on  the outside int, and applied 102 for outbound traffic on the inside int,  and I'm seeing policy hits on both permit statements outside and  inside, so it looks like the traffic is being passed on to the inside  interface and permitted, but the server isn't seeing the packets.
 
I can ping the outside interface from the outside, but cannot ping the  inside interface or any inside hosts from the outside, even though I  have 'permit icmp any any' enabled on the ACL on both ints. When I  remove the firewall and put the outside clients on the same subnet, the server sees the packets just fine.
 
I set up the same scenario in my lab with an ASA 5505, with the same results.  Below is the running config from the 5505 in the lab.  The production firewall is running a slightly older version of ASA, so I made the configuration as basic as possible on the 5505 to match the config in the field:
 
: Saved
:
ASA Version 8.3(1)
!
hostname ciscoasa
enable password Guh9Xxhb9mcC8lV1 encrypted
passwd 2KFQnbNIdI.2KYOU encrypted
names
!
interface Vlan2
description Outside WAN Interface
nameif outside
security-level 0
ip address 192.168.10.1 255.255.255.0
!
interface Vlan3
description Inside LAN Interface
nameif inside(code)

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Cisco Firewall :: 5520 Cannot Able To Reach Internet Access

Mar 6, 2012

I have been configuring a cisco ASA 5520, everything is working fine but when i create an ACL:
 
-access-list OUT extended permit ip 172.16.x.x 255.255.255.0 any
-access-group OUT out interface outside
 
i added ports like www or 443 and it is not working to Internet access a router is before to my firewall connected to my headquater, i can see my private networks but i cannot able to reach Internet access,

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Cisco Firewall :: Basic ASA 5520 To Allow Access From Internet

Jan 17, 2013

I've got what is probably a very basic question - but i can't figure it out.I have: Internet (ADSL) -> 2851 (ADSL wic) -> 5520 -> internal LAN (192.168.1.x/24)
 
The asa has just replaced a Checkpoint firewall.I've set up the ASA to the point where all hosts on the internal LAN have internet access (using a dynamic PAT on that network).  This all works well.
 
The problem i have is i am trying to allow access from the internet to an internal host on a specifc TCP port (as i had done on the Checkpoint) but i'm getting:
 
Asymmetric NAT rules matched for forward and reverse flows; Connection for tcp src outside:111.111.111.11/52135 dst inside:192.168.1.252/5555 denied due to NAT reverse path failure
 
From what i have read i need to add a NAT exemption for this particular use case - to avoid the dynamic NAT i have setup, but im not sure how to do so.I'm running 9.1 on the ASA, no VPNs yet.  Just this basic setup.

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Cisco Firewall :: ASA 5520 - Moving Inside Port To 1gb SFP Port

Jun 11, 2012

We have an ASA 5520 and it's inside interface is currently plugged into a fast ethernet port on a 3750.  I have just bought a 1gig SFP module and have copied the fast ethernet port config to the gigabit port, but the port seems to be flapping
 
The port conf gi is this:
 
interface GigabitEthernet1/0/4
description Link to Inside ASA
switchport access vlan 2
switchport trunk encapsulation dot1q

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Cisco Firewall :: ASA 8.2.5 - DMZ To Inside Access?

Oct 18, 2012

A Cisco ASA running 8.2.5 with 3 interfaces: Outside (Sec lvl 0)/-nternet IP / DMZ (Sec lvl 2)-192.168.8.0/24 / Inside (Sec level 100)-192.168.1.0/24
 
An ACL on the DMZ which looks like this:
 
access list DMZ_IN permit ip 192.168.8.0 255.255.255.0 any
access list DMZ_IN deny ip any any
access-group DMZ_IN in interface DMZ 
global (outside) 1 interface
nat (DMZ) 1 192.168.8.0 255.255.255.0
 
Nat Control  is not enabled (by default) There is no nat exemption, static identity nat or any nat of any kind set up between the Inside and DMZ.The question is:  Will the DMZ network be able to initiate connections to the Inside network or will only outside (internet) access be permitted?
 
A) No, inside access will not be permitted, only Interenet access will be permitted, because there is no NAT exemption or Static Identity NAT between the lower level security interface (DMZ) and the Higher level security interface (Inside), regardless of the DMZ ACL rule with a destination of ANY.
 
B) Yes, access to the Internet and the Inside can be initiated because NAT control is disabled and there is an ACL that permits DMZ traffic to 'ANY' destination.

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Cisco Firewall :: ASA 9.1 Inside To DMZ Access

Feb 26, 2013

I recently upgraded my asa from 8.2 to 9.1 (reconfigured from scratch - didnot convert old config) and everything seems to be working fine except for communication between my INTERNAL network and my DMZ. Here's my config below -
 
ASA Version 9.1(1)
!
hostname ZEPPELIN
domain-name MIWEBPORTAL.com
enable password XXXXX
[Code]...

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Cisco Firewall :: Allow Outside Access To Inside Device Using ASA 5510?

Apr 22, 2013

I have a mail archiver (hardware device) in my network that I need to access to from the Ipad/iphone. There is an app for it but I have to allow the access on the ASA. I created an 'object' for the device and added a Static NAT entry for it, then added an access rule. Its not working so I am guessing I did it wrong. The device uses port 8000 which I also added to the object. correct commands, or using the ASDM works too.

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Cisco Firewall :: ASA 8.4(3) - Access To Public IP Address From Inside

May 22, 2012

I need to connect from an inside host to a host located in the DMZ zone for DNS queries. The host in the DMZ zone has a static NAT to the outside. The point now is that I would like to connect from inside to the NATed outside address, means to the public Internet address.
 
Inside host: 10.0.0.1 -> PAT for 10.0.0.0/8 to 20.0.0.254 (Outside Interface)
DMZ host: 192.168.1.1 -> NAT to outside to 20.0.0.1
 
The traffic should be 10.0.0.1 udp>1024 to 20.0.0.1 udp=53. The source IP address on the outside interface now is 20.0.0.254 (according to the PAT), the destination IP address 20.0.0.1. The DNS reply from 20.0.0.1 should go back now to 20.0.0.254 and then to the inside host 10.0.0.1.
 
I know that on the PIX it was not possible, to have outgoing traffic on the outside interface which immediately enters again the same interface. Can I realize this scenario with the ASA 8.4(3) release now?

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Cisco Firewall :: Inside Access Using FQDN To Web Server On DMZ 571

Aug 21, 2011

What I have is 3 interfaces on my PIX.- Outside: 216.116.87.0/24 (security level 0)

- 469: 172.16.6.0 /24 (security level 10)
- 571: 192.168.255.0 /24 (security level 1)
 
My users on 571 need to access a web server on the 469 interface. However, the requirements are that the 571 users can only access the Website using the public FQDN which there is a static NAT from outside to 469. [code] Here is also the Packet-Tracer and it shows what I expect that the traffic is source from 571 and exits 469. However, the users are not able to access the website.[code]

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Cisco Firewall :: HTTPs Access From DMZ To Inside On ASA 5505

Jan 5, 2012

We have an ASA5505 UL bundel, updated with this license "L-ASA5505-SEC-PL=" to enable traffic from DMZ to Inside. No NAT or rules deployed for that yet.

On the Inside we have Exchange 2007 in a single server installation. The public url for smtp, ActiveSync, OWA and Outlook Anywhere is mail.company.se. There is a static NAT for outside traffic to access above mentioned services on inside. Now, on DMZ there is the WLAN for guests to access the Internet. How ever, our Smart Phones with WLAN turned on, cannot sync to the Exchange Server on the Inside! The DMZ gets IP-addressen from ASA on DMZ Interface with external DNS configured. How can I configure the ASA to achieve the function of ActiveSync from DMZ to Inside with the public URL from the phones?

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Cisco Firewall :: Slow Access Or NAT To Inside Interface On ASA 9.1

May 13, 2013

I did this on the PIX and it worked like a charm, but I am having some difficulty translating the configuration to an ASA.
 
In the PIX I performed NAT on outside traffic to a specific inside host (web server) to map to the inside interface so that return traffic would go to the same firewall the traffic came in through, The reason for this configuration was because the gateway of last resort was a different firewall and not the firewall the traffic came in through.
 
Now to further give you some history, the gateway of last resort is an ASA running 9.1 (Now), prior to that it was a PIX with v8.0(4), traffic to the aforementioned web server came in through the gateway of last resort), which at the time was the PIX.
 
However, for some reason after swapping the PIX for an ASA (same rules, updated NAT rules for 9.1) access to the same web server is slow. Not sure why, but it’s the case. To alleviate the slowness we experienced, and until I can figure out why this occurs on the ASA, I placed a PIX on the network that only listens for traffic for the web server in question. On this PIX I map to the inside interface so that traffic flow works and external clients can access the web server with no issues.
 
So two questions, one I would like to use the configuration I have for the web server on the PIX on the ASA to see if that setup on the ASA works better, but having difficulty translating the rules to the ASA.
 
Second question, (Slow access with ASA to a web server, but fast with PIX to the same web server)?
 
P.S. Addresses in attached picture config are not real, but I know what they translate to.

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Cisco Firewall :: ASA 5510 Inside Access To NAT IP On Outside Interface

Jun 28, 2012

we have a server that has an outside IP and an inside IP. It's inside ip is 192.168.222.30/24 and it's outside IP is 199.204.50.2/29. The connection to this server from the outside is perfectly fine, but access from inside users to the NAT'd IP which is 199.204.50.2/29 is having issues, however, access to the inside IP works fine (this part makes sense)Will It be a must to set the inside DNS A record to the inside IP and not the outside IP, or can users on the inside interface access the NAT'd IP which is assigned to the server
 
LAN(192.168.222.0/24)<=====>InsideASAOutside<=====>(Server with NAT IP 192.168.222.30/24, it's also physicall assigned to this server).This is an ASA 5510 with 8.4.                  

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Cisco Firewall :: ASA5505 Cannot Access Inside Network From IPSec VPN

Jan 20, 2013

I'm trying to make a very plain and simple network with the ASA 5505, I've strated from scratch over a dozen times triyng to find where I'm going wrong.  My main goal is to simply create an IPSec VPN connection to my ASA 5505 and simply ping and connect to devices with the "inside network", so far I can easily create and establish a IPSec VPN Connection, but up to this point, I cannot successfully ping or access a single device on the ASA 5505 inside network.I've taken, create the IPSec profile with the ASDM wizard, add exemption for the VPN IP Pool, add access-list from this Cisco link, url...All this and I can't make a single connection to the inside network.  [code]

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Cisco Firewall :: ASA5505 (8.4.2) How To Access Inside SBS-Server On SMTP / RDP

Oct 25, 2011

Using an ASA5505, have 1 static outside address, want to access an inside SBS-Server on SMTP, RDP (3389), HTTPS and port 987
 
Have configured network object nat rules using the asdm, SMTP works (I can telnet to the server on port 25 from outside), however for some reason I can not telnet inside and out on port 25, so outgoing mail does not work. RDP does not seem to work from outside, 987 I havent tested from outside. When I try to create a network object nat rule for https I get this message from the ASA:
 
[OK] object network SBS-HTTPS
 object network SBS-HTTPS
[ERROR] nat (inside,outside) static interface service tcp https https
 NAT unable to reserve ports.

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