Cisco Firewall :: PIX 515e Allow LAN Users To Access ISP Assigned Public IPs
Dec 16, 2012
Pix 515e 6.3.4..A web server on our DMZ is exposed for external access.There is an "A" record (webserver.yyy) on a public DNS for this public IP.This works fine for external users. url..Now I have been asked to allowed our LAN user to access the same link and I CANNOT CREATE AN INTERNAL DNS RECORD TO TAKE CARE OF THIS, which means when our internal users access that link, the request goes out of OUTSIDE interface with a NAT overloaded address(111.111.111.2) that is in the same subnet as the URL is trying to resolve. Once it knows the IP address thru DNS resolution tries to comes back in thru the same Interface(OUTSIDE) to hit the web server in the DMZ and is not able to.
1- Where does the request from an internal user to hit url is dropped?
2- what can be done to allow this type of connectivity in the PIX 515e device?
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Aug 7, 2011
ASA 5505 and DMZ and Base License,"For example, you have one VLAN assigned to the outside for Internet access, one VLAN assigned to an inside business network, and a third VLAN assigned to your home network. The home network does not need to access the business network, so you can use the no forward interface command on the home VLAN; the business network can access the home network, but the home network cannot access the business network." Page 6-17.
This is exactly what I need. Mail server in DMZ, full access from internet to DMZ, and from inside network to DMZ, no access from DZM to inside network. If I good understand, this is possible with base license.
I successfully configure, internet Access for DZM and inside network, Mail server can be accessed from internet, as well as RDP on inside network. But I have problem to configure communication from inside network to DMZ. [code]
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Mar 21, 2013
We recently implement WLC 5500 Series, I found out guest user once period of that user expired it will not appear at lobbyadmin page where you can see list of users.
Is there any way to see expired guest users and also IP address which assign to guest user?
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Aug 22, 2011
I need to redo the configuration on the new one?
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Mar 4, 2012
I've just set up dialin VPN on my PIX 515e. The users can connect fine but my split tunnel ACL is not applied and I have the following error in syslog No translation group found for udp src outside:10.0.56.2/137 dst inside_lan:10.0.8.6/137 If i try to ping my inside interface from the client, i get a reply from the outside interface IP address. Do I need a specific NAT rule for my VPN client users?
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Jul 1, 2011
I was wondering if I picked up a used (End of Life) pix-515e, would would I need to do to be able to upgrade it to that latest version of IOS made for that product? Is it still possible to even get access to that version? Will cisco allow downloads for that devices IOS?
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Feb 26, 2013
I have some problem with the ASA 5510 ver 7.0(6). My manager wants to keep this as backup. tried lots of things but still users not able to access internet nor can i ping anywhere.For example when i ping 4.2.2.2 i dont get any reply.The runing config is below for ur ref :
HQ-ASA-01# show running-config
: Saved
:
[Code]......
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Feb 24, 2011
I have a normal setup of ASA5505 (without security license) connected behind an internet router. From the ASA5505 console I can ping the Internet. However, users behind the Firewall on the internal LAN, cannot ping the Internet even though NATing is configured. The users can ping the Inside interface of the Firewall so there is no internal reachability problem. In addition, I noticed that the NAT inside access list is not having any hit counts at all when users are trying to reach the internet.
When i replace the ASA5505 with a router with NAT overload configuration on it, the setup works normally and users are able to browse the internet.
The ASA5505 configuration is shown below.
hostname Firewall
interface Ethernet0/0
description Connected To Internet Router
switchport access vlan 10
[Code].....
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Mar 3, 2013
I have DMZ n/w 192.166.0.0/24 on which i have nated on public ip
-private ip : 192.16.0.201 (OWA)
-public ip : 61.x.x.x.
when i try to access owa(public ip ) from dmz it is not allowing , From what rules i need to set to get work ASA 5510 8.2
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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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Mar 13, 2011
I just configure an ASA 5520, here is the config (the ip address of outside network if going to change from private direccion by reason security).
The problem that I have is the users can access to the web site through the public´s ip address but they do not can access through by name. We review all the config on the server DNS and with the command NSLOOKUP we can see that work fine. The client think that the asa is blocked the connnection.
[code]....
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Feb 5, 2012
We need to deploy a Cisco ASA 5510 behind the Internet facing router for Remote Access VPN (RAVPN). We bought the block of 16 IPs (in a different subnet) which is routed through the main router (69.x.x.x)and configured the outside interface of ASA with a public IP 64.x.x.x and subnet mask 255.255.255.240. Below is the network structure.
But, we can't access the ASA by it's public IP.
DSL Modem → RV082 router → Switch → LAN
(69.x.x.x) ↑ (192.168.0.0)
Cisco ASA 5510
(outside: 64.x.x.x, inside: 192.168.0.172)
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Nov 17, 2011
Is there any significance to the parameter "firewall-group" in the command
firewall vlan-group <firewall-group> <vlan-id>…<vlan-id>?
In other words is the series of commands
firewall switch 1 module 3 vlan-group 1,2
firewall vlan-group 1 100,101,102
firewall vlan-group 2 200,201,202
exactly equivalent to
firewall switch 1 module 3 vlan-group 3
firewall vlan-group 3 100,101,102,200,201,202
or
firewall switch 1 module 3 vlan-group 1,2,3
firewall vlan-group 1 100,200
firewall vlan-group 2 101,201
firewall vlan-group 3 102,202
All three of these options associate the same set of vlans to the FWSM but using different groupings. As far as I can tell, these groupings have no functional significance either on the switch side or the FWSM side. These are simply three different ways of specifying exactly the same thing? Am I correct?
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Nov 7, 2012
Since we upgraded our ASA from 8.3 to 8.4(4), VPN users cannot access resources. This worked fine until the appliances were upgraded. We get the message:
[code]....
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Dec 9, 2011
I configured one ASA 5510 firewall with CSC-SSM-10 in one of my customer location.
Here i want configure my firewall to send email alerts to particular mail ID, if anybody any access my network from outside( Like VPN users).
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Oct 2, 2012
I am trying to provide internet access to public and private SSID's on Cisco AP541n using VLAN's connected directly to ASA5505. VLAN1 is inside interface (private) and VLAN12 is wlan interface (public SSID). The AP541n is plugged into switch port 0/7 on an ASA 5505.Port 0/7 is configured as trunk mode. I have internet access when connected to private SSID but no internet access when connected to public SSID. why I can't access internet on public SSID?
logging class ip history emergencies
mtu inside 1500
mtu outside 1500
[Code].....
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Dec 11, 2012
i am using a Cisco 1841 with subinterfaces instead (NAT on a stick).From the internet i can access services on public IP being hosted in LAN2. But when i try to access the same services on the same public IPs but sitting on LAN1, it does not work.
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Dec 11, 2012
i am using a Cisco 1841 with subinterfaces instead (NAT on a stick).From the internet i can access services on public IP being hosted in LAN2. But when i try to access the same services on the same public IPs but sitting on LAN1, it does not work.
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Apr 5, 2011
How to designate access-list for the remote access vpn users in order to let them access specific subnet or host,asa 5510 and acs is in the picture
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Jul 26, 2012
I have an auditor wanting a screenshot of all users that have acces to configure our firewall, I am unfamiliar with 5.1. Is there a way of running such a report on a paticular device?
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Jan 23, 2012
We have ASA 5550, I have a portal server in the dmz which is natted statically to a public ip address for port 443. The application works fine from outside world. The server is also nated with a dynamic nat from inside to dmz and when I hit on the dmz ip from my inside it works fine.
The requirement for us is that the users sitting behind the inside (i.e. LAN) should access the server on the public ip address and not thru the dmz.
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Oct 12, 2011
how to totaly disable Admin/ASDM access on our public interface of our 5510. I don't want to change IPSec or SSL access to the outside interface. Just totaly disable access to Admin/ASDM from the outside without halting all other access.
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Jul 10, 2011
i have an ASA 5520 8.4(1) setup as follows
public wan
|
|
ASA-- public dmz
|
|
private lan
i need to allow https traffic to a server in the DMZ that will have a routable IP address will just an ACL suffice ?which interface do i apply it to ? wan or dmz ?i dont need a NAT since the DMZ is a routable space?
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Nov 28, 2011
I have a issue that i am at a loss as how to solve it. I have an ASA 5505 as my firewall. I have users from other companies who visit from time to time and are unable to use their outlook email to send messages. They can however receive messages without a problem. I also have a situation where users who use windows live to access gmail are unable to send messages.
I have narrowed it down to the fact that these uses are using ssl/tls to send the mails. I did some research and found out about the inspect esmtp setting in the ASA. I have disabled it and i still have to problem. I have also removed all outbound deny statements and still no luck.
Of note is that i can send emails without attachments. They take a long time to go out ( from minutes to hours) but eventually they do. Emails with attachments of even 10k do not go at all.
I was running image 8.2.3 and i downgraded to 8.0.5...still did not work...i upgraded to 8.4.3...still did not work. I am now back at 8.2.3.
My Firewall config is attached. I am at my wits end as to what else to try. The company has not renewed support for the device so i am on my own here!
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Jun 4, 2013
I have just set up my asa5505 and while in the sh run I have the following lines
-dhcpd address 192.168.2.200-192.168.2.231 inside
-dhcpd enable inside
-dhcpd dns 68.94.156.1 interface outside
When a client connects to the device like: 192.168.2.215 there is no dns assigned. My devices are unable to access the internet unless I manually assign the dns in the local settings for that host.
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Jun 21, 2012
I have a Cisco 5520 using ASDM 6.4
Currently my VPN settings use a shared key without certficate to access the VPN. I would like to now set up a self assigned certifcte from the ASA to get users to import the certficate in order to VPN..
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Jul 6, 2012
My ip address of my WRVS4400N changes every so often. when i use the ip assigned to connect remotely, it works until the ip is re-assigned through dhcp. I know there is a way around this bu ysing a name or something. I just don't know how to set that up.
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Nov 15, 2010
I'm configuring a Cisco 877 router as my firewall.My WAN IP will be assigned dynamically with DHCP. I will also get my default route from DHCP.I will need to configure ip inspection and packet filtering.I will need to configure NAT, I will eventually need to also configure a dial-up VPN.
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Feb 7, 2013
We have an ASA configured to access the internet, which works fine for clients who have an IP address assigned by DHCP, but not for clients with manually assigned IPs.
For instance, with the DHCP server configured to give IP addresses between 172.16.101.1 and 172.16.101.10, a device may get the IP address 172.16.101.1. This machine will have connectivity to the internet.
If we then configure DHCPd server range as 172.16.101.2 to 172.16.101.10 and statically assign the 172.16.101.1 IP to the client, it will not have internet access. It will, however have inside access and VPN access.
If I try to ping 8.8.8.8, the following is logged:
ASA 3 Feb 08 2013 15:51:01 8.8.8.8 xxx.xxx.xxx.100 Deny inbound icmp src outside:8.8.8.8 dst servers:xxx.xxx.xxx.100 (type 0, code 0)
Where 'servers' is the name of the inside interface the request is made from and 'xxx.xxx.xxx.100' is the external IP. It seems as DNAT is not working when the client IP is static assigned.
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Apr 9, 2013
We are deploying two Cisco 5585 in transparent mode and multiple contexts. they are running Active-Active fail over.
There are a lot of V LANs need to be added in the contexts, we are trying to use least contexts to fulfill.
ASA supports 8 bridge groups for each contexts, and maximum 4 interfaces for each bridge group.
We have assigned four interfaces in different V LANs , set two of them as a pair with one IP sub net and the other two interfaces are in another IP sub net.
For example :
Bridge group 1:
inside1 and outside1 -------> 192.168.1.0/24
inside2 and outside2 -------> 192.168.2.0/24
However, we can only make one sub net(V LAN pairs ) work when the BVI is set to that IP sub net. If the BVI set to 192.168.1.0/24, the inside1 and outside1, the other pair not work. If the BVI set 192.168.2.0/24, then only inside2 and outside2 work.
Since the BVI can only be assigned to either of the sub net, Is it possible to make both vlan pairs work ? Or we only can have one sub net in one bridge group ?
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Jul 7, 2011
I have connected an ASA 5505 to an ADSL router that is able to assign the IP address and the also the DNS servers for the ISP for the outside interface. The ASA is loaded up with IOS "asa842-k8.bin"
I am using vpnclient with a hostname as oppose to an IP address to connect to a headend remote server. If I hardcode the DNS servers IPs in the "dns server-group DefaultDNS" I am able to resolve the hostname. If I then remove the IPs from the group and rely on the dhcp to assign them, when I try to resolve the name I have an error at the console "ERROR: % Invalid Hostname"
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Jun 13, 2012
I have an Pix 515E firewall with Pix724-33.bin IOS. I just want to know that does this IOS support SNMPV3 or I will have to upgarde it with some other version.
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Jan 16, 2013
Ive got a problem with passing traffic through a Cisco 515e firewall.im trying to telnet to devices on the inside net, 172.16.x.x fom an outside net 10.x.x.x? ive configured a group called infrastructure and added the 10.x.x.x addresses.ive configured acl 101 inbound on the outside interface:
access-list 101 permit tcp object-group INFRASTRUCTURE any eq telnet
theres a route to the inside net:
inside 172.16.0.0 255.255.0.0 172.16.163.1
and theres a translation:
static (inside,outside) 10.4.4.34 10.4.4.34 netmask 255.255.255.255
when i try and connect, using a packet capture I can see traffic from 10.4.4.34 to the inside device 172.x.x.x on the inside interface but i cant see the traffic leave the outside interface ive used the same group infrastructure group before to connect to VM machines on the 172.x.x.x net on RDP and this wrks ok. access-list 101 permit tcp object-group INFRASTRUCTURE object-group VMs eq 3389
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