I am not very familiar with ASA 5520 yet.I have been able to allow the OUTSIDE world to connect via SSH to the intermal host 172.17.2.50 on my DMZ network. I've created a NAT rule and an ACL as written on the configuration below.
Now I need the INTERNAL network to ssh 172.17.2.50 but ASA stops me with the following error: [code]
We just changed ISPs and now have a /29 routed subnet to be used on our ASA 5510 (8.4) instead of the one public ip we had before.There are a couple of PAT translations that were previously setup on the "interface" address which i now want to assign to a different ip address further in my subnet.
So i just changed this:
object network BMMM
nat (inside,outside) static interface service tcp smtp smtp
to:
object network BMMM
nat (inside,outside) static other.external.ip.in.subnet service tcp smtp smtp
And assumed that this would work,y it does not, and this leaves me unable to contact that machine from the outside.And shoud i also change my access-list?The relevant access-list rule is:access-list outside_in extended permit tcp any object BMMM eq smtp
I am new to the ASA series and I am at a complete loss as to why I cannot configure this router to forward SMTP and RDP traffic to an internal host.
The packet trace tool in ASDM shows complete end-to-end connectivity for RDP but it still fails to connect from outside. This is my config file, what I need to change in order to make it work?
I am working on replacing our Checkpoint Firewalls with ASA's, and am running into the following NAT problem. On some of our Checkpoints, there are external NAT's that are mapped to multiple internal hosts based on ports.Is there any way to translate that to the ASA? I'm not sure the ASA will let you have multiple internal hosts mapped to one external IP using static NATs. The main issue, is these are alarm panels that receive data from external hosts (the traffic is initiated externally on the Internet) so I can't use dynamic PAT with this.
View 1 Replies View RelatedPort forwarding done to a DMZ located server on the cisco ASA 5520. Now this host cannot browse but allowed outside to inside access is possible Is there anyway i can give this system to browse internet? may be through the natted IP ( 94.20.*.*)
View 2 Replies View RelatedI am trying to create host objects that I'll then add to network-object groups for use in ACL/ACEs.When I try to create a host I am having trouble adding the IP address.I then get an error saying the host name must start and end with letters or numbers and only contain letters or numbers. What do I need to do to create hosts from CLI?
View 2 Replies View RelatedI 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
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How can we host 300+ secure (https) websites using a couple of public IP's on an ASA5520 with AIP SSM-20 and with as few certificates as possible?
Summary of set-up:
We currently host a number of websites using an ASA5520 and use host headers, so have 6 servers with around 40 hosted URL's. The number of websites is due to double very soon and we will need to use more of our public IP's. We can see that we will will run out of public IP's very soon especially as there is a project in the pipeline that has a likely requirement to host an additional 200+ websites.
Each of these websites are required to use https and therefore each must have a certificate which will be very expensive. PCI DSS (payment card industry data security standard) is causing us issues because we had hoped to post the certificates on the firewall (one for each physical server) and then run the data UN-encrypted from the firewall to the relevant web servers, so that we could use one certificate for lots of websites and therefore reduce our certificate costs, however is not best practice to do this due to the data being unencrypted within the firewall and on the DMZ network and therefore potentially open to compromise. I doubt that we could install 200+ certificates on a 5520 and then re-encrypt the data to the web servers especially seeing as we also have an IPS card that is already running at around 70-80% util due to the performance overhead.
BTW - We also have an in-line Breach WAF which will be required to inspect the packets (certificates to be installed on the WAF to allow this).
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)
I am using ASA 5520 with 8.2.4 IOS. I'm new to ASA/Firewall. I need to do access webserver from outside network.From Laptop (192.168.2.51), If I connect to url... it should open page from 10.10.10.50.I also need to ssh to webserver from laptop. If I ssh to 192.168.2.50 from laptop, it should connect to 10. 10. 10.50. [code]I can't get to webserver from outside network, so now, I connected laptop to directly ASA 5520 outside port with crossover cable.ASA Inside port connects to L3 switch. Webserver also connects to L3 switch. But still doesn't work.
View 9 Replies View RelatedI've got a cisco asa 5520 and setting up the NAT for multiple DMZs on it.
I want to use PAT on the outside interface.
internally ive created subinterfaces for the VLANs and connected to a trunk port on a switch.
configure NAT for this scenario. I've got only 1 external public IP address.
Used a pair of ASA 5520s in HA to firewall the internet edge and to firewall traffic between internal security zones such as web and application layers? If so, is this best done using different security levels or contexts?
I'm thinking of using a routed context for securing the internet edge and then using seperate contexts for the web and application networks. Contexts will route via a L3 switch.
I've just taken over a new network with a Cisco ASA5520. Everything is working fine, except I am being bombarded with 106001 alerts from a few internal hosts to one specific internal host. The description in general is "Inbound TCP connection denied from 10.1.0.1 to 10.1.0.5 - both of those are valid internal hosts and the TCP ports are also valid. I tried looking at the log and getting it me to tell me which rule was causing these alerts, but it just came back with 'It's not possible for these type of alerts'
- How is it possible for the ASA to even pick up on this when, in theory, the source host wouldn't be going near the ASA since it's on the same subnet?
- What might be causing this?
- How can I turn it off!! (I guess that'd be fixed by point 2)
We have a Cisco wireless infrastructure in place that includes a guest network with its own subnet that is a sub interface of the inside interface on our ASA 5520. There are no routes for it to be allowed access to the internal subnets. So it can only access the internet. This is primarily used by the public, but we have several non employee personnel that we only want to give internet access and force them to access the internal network through our clientless SSL vpn portal or through other internet facing internal resources such as webmail.I have done packet traces from within the ASA and the break appears to be there is no ACL allowing the traffic back into the network once the web resource replies to the request and the traffic is attempting to come back into the network from the web resource. Is that as clear as mud?
I know that this has to be a common problem and a way around this is to allow the guest wireless network access to the internal network but only for the select resources that they require. And that this can be done seemlessly by network specific routes and or alternate DNS entries, but I would like to keep this simple and just allow them to access the web resource, webmail and VPN, from the guest wireless using internet DNS servers without route trickery.
Currently, we allow /24 into our DMZ as follow: [code] Now, if we need to extended the /24 to a bigger scope ( range of 15 class C networks ) : can I just re-used the static route or should I use a ACL to allow traffic? This is on a ASA5585
View 1 Replies View Related I'm having with my VPN Server on my Cisco 2621xm.
I started by creating a VPN - everything worked great. I assigned the DNS Servers, Domain name, WINS Server so when I connect I'm able to resolve local hostnames on the network with no problem, however, I had no internet access... I then set up a split tunnel access list. Since I've set that up, I'm now able to ping internet based addresses url... but no longer able to resolve internal host names. I can ping the ip addresses, just name resolution no longer works. [code]
I want to mark company owned laptops with a registry setting and have our ASA 5520 identify these systems when connecting via SSL and IPSEC remotely, and allow broader access to the internal network than the telecommuter that use their personal PCs. For the users that connect with their personal PCs, I want to only allow RDP access to their company PCs on the internal network.
Can I accomplish this with the current VPN Plus license and Anyconnect Essentials feature enabled? If not, what license/features do I need installed/ enabled to accomplish these objectives?
I'm currently looking for a solution in order to restrict the modification of the host internal identity store (add or delete MAC host) per group. The default administrator roles does not include "per group restriction". Under the ACS I defined one group per department? My objective it to allow each department to access their ACS MAC database to add or delete MAC addresses as required.
How to restrict internal identity store per group?Do I need to create new roles? and how?I was not able to get an answer from the ACS ADMIN manual.
I have a small request. I have a setup where the internal users within the corporate network need to remote VPN into the VPN concentrator.
The setup is as below
inside
(202.x.x.x)VPN ASA 5520 ---------------- FW ------------- intenal network
----------------
outside
The problem is that the 10.0.0.0/8 internetl network establishes the connection via the outside interface. However, the return path is via the inside interface. But the vpn concentrator keeps showing next-hop not reachable for USP 500. Why does it show that when it has a route via the inside interface.
6|Jan 29 2013 13:44:38|110003: Routing failed to locate next hop for udp from NP Identity Ifc:202.x.x.x..29/62465 to outside:10.163..x.x/5892
Also, since we are trying to send traffic from outside to the inside interface, I tried to NAT the source ip i.e 202.x.x.x and left the source unaltered. But it still doesnt work.
I am wondering why is the ASA not routing via the inside interface and looks for the return traffic via the same outside interface the traffic entered in. The outside has a security-level of 0 and the isnide has a sec-level of 100.
I've been tasked with retiring a VPN Concentrator 3000 and replacing it with an ASA 5520. I'm trying to get a handle on how to set up the NATs and ACLs, since most of my experience is remote access VPNs, not site-to-site. Plus I've not configured a VPN 3000 in about 6 years so I'm having to re-learn a lot of the interface.
The VPN 3000 has a feature called LAN-to-LAN NAT rules that basically allow you to NAT an address on your internal network to an address on the "local" network for the LAN-to-LAN connection so it can then go through the tunnel to the remote side. The config looks something like this in the VPN 3000: [code]
Which looks to me like a "Static Policy NAT" in ASDM. So I set one of those up, that should be translating 172.16.3.151 on the inside interface to 192.168.200.151 on the inside interface (yes, the same interface) which should then (logically) be picked up as "interesting traffic" by the crypto-map and sent across the VPN tunnel. However, that doesn't seem to be the case - both the "packet trace" in the ASDM and traceroute from the source workstation show the packets getting to the inside interface, and then passed right out the outside interface to the internet router (which then drops the packets as they're a private IP).
what else do I need to do to make the crypto-map pick up the NATted traffic?
I need to configure my ASA 5520 version 7.3 firewall to translate our SMTP server residing in local LAN to use different IP address from the outside interface which is used by all other computers to access Internet. Under NAT section, I have NATted this internal SMTP server with different IP address(eg x.x.x.1) and also translated the remaining IP addresses in the LAN to the outside interface(eg x.x.x.2)
my problem is, Whenever i check the header for message coming from the smtp server it shows that, the SMTP server is also translated by using the same outside interface public ip address(i.e x.x.x.2) which is used by other client machine to access internet instead of the x.x.x.1. How I can get my SMTP server to use separate IP and avoid to be blacklisted by some domain.
I am trying to build a remote vpn in ASA 5520 Software Version 8.3(1). I am using ASDM 6.3(1) for the configuration. I went through the SSL VPN wizard and did the configuration. I tried connecting to the ASA using anyconnect VPN and I could successfully connect the VPN. My home laptop takes an IP 192.168.60.21 (which I have defined in the wizard). Now my issue is, I can't access any office internal network from this laptop (none of the internal IP is ping ing even). Meanwhile, I could ping and rdp to this laptop(which is connectd by anyconnect VPN) from my office network. One thing I noticed is that when I give a traceroute to an internal IP from the laptop, the first hop goes to my home ISP router.
View 8 Replies View RelatedI have created a new sub-interface on our ASA 5520 for guest internet access.
My goal is to allow access to a few specific services hanging off some dmz interfaces on the same firewall and full unrestricted access to the internet only. Everything else should be out of bounds.
The order of the rules I plan to setup on the guest interface inbound are:
#1. <rules to allow access to specific services in the dmz>
#2. <block any ip access to the entire private network ip address space>
#3. <permit ip any any>
#1. These rules will give access to the guest user to services located in the dmz
#2. This rule will block all access to any services in the private ip address space (thus blocking access to all internal services)
#3. This rule is to allow access to any other services i.e. the internet.
Is this the best way to achieve my goal in the most secure way or is there a better way? i.e. is there a way to force the traffic by default to only go out the outside interface unless there is a specific rule allowing it go elsewhere?
(Of course Dynamic PAT will also be configured for traffic coming from the guest interface to the outside interface.)
I have set up a remote access ipsec vpn on an asa 5520. I can connect, and ping internal ip addresses, however I cannot ping back out to the internet, nor can the internal network ping the vpn clients and dns resolution internal or external does not work. I am seeing nothing blocked in the logs on the asa.
View 3 Replies View Relatedi configured cisco asa 5520 as cisco ezvpn server and cisco 891 as ezvpn client .the configurtion is working fine.i am using client mode on the ezvpn client side.but my quesion is , is it possible to communicate to ezvpn client side internal ip from the ezvpn server side?and one more thing what is the benefit of network extension mode on the client side and how it will work what are possible changes need to do in the server and the client side.
View 4 Replies View RelatedI have a host that can successfully connect to a PIX 515E (7.x OS) via VPN Client; however, I have no IP routing to the LAN from the remote host.The VPN IP pool works finem,The LAN default gateway is the inside interface on the PIX; the network is flat L2 behind it.The default route on the PIX points out; no other routes are defined,The VPN remote host can be pinged from LAN hosts, but the VPN remote host cannot ping any LAN host, not even the PIX inside interface.
View 2 Replies View RelatedASA 5510
Ver 8.2(5)
I have been looking all over the place for the answer of how to allow clients on an IPSEC VPN to ping from host to host.
I have 2 web servers that replicate between them (two different internal ip). My idea is that if one of them will not work, the other to do the relay.I have a Cisco ASA 5505 I can do a nat for each machine. How should I set ?
View 3 Replies View RelatedBased on the configuration pasted below, we believe the host (10.0.2.200 / 255.255.255.0 GW: 10.0.2.1 with external DNS servers configured) should have access to the web. However, it cannot resolve any names nor can it connect outside.
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We were using ASA-5520-K9 with ASA-SSM-AIP-20-K9 but recently found some hardware problem in our running ASA. Now cisco want to replace with ASA-5520-K8.
View 1 Replies View RelatedI have a ASA 5505 Sec Plus. I would like to allow outside hosts to our mail server and also our FTP server. So i would like to allow only SMTP, HTTP (for Outlook Web Access) and FTP.
View 10 Replies View RelatedI updated an ASA 5505 to 50 users, but I still can only connect 10 hosts. In Licensing it show 50 insides hosts. I also tried to update to ASA 8.4.5 but that did not work.
View 2 Replies View RelatedI'm just wondering if its possible to ping an IPv4 host using the IPv6 host assuming that the NAT64 has already been implemented?
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