The Cisco ASA (Adaptive Security Appliance) series of products provide Firewall and VPN functionality.

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Connecting to a Cisco ASA 5510 with Win 7 VPN client

Is it possible to configure a Cisco ASA 5510 to accept a connection from Windows 7 with the built in VPN client software in Win7 ? I know this question has sorta-been asked before on SF but I'm ...
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1answer
2k views

Remote VPN - two-factor authentication with Cisco ASA + OpenLDAP

Can somebody give me a pathway (or link to the documentation / how to) to implement two-factor authentication (LDAP password + certificate) on Cisco ASA for RemoteVPN (with Anyconnect client)? ...
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4answers
19k views

VPN is working, except for DNS lookups. Firewall (Cisco ASA 5505) issue?

I've got the following set up: LAN -> DHCP / DNS / VPN server (OSX 10.6) -> Cisco ASA 5505 -> WAN Connecting to the LAN via VPN works fine. I get all the details properly and I can ping ...
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1answer
18 views

Cisco ASA: Part of the traffic via VPN is blocked

We inherited the management of an ASA 5520 running IOS 8.2(3) from a previous company, and now we are switching the connectivity to a VPN from a LAN link directly connected to one of ASA interfaces. ...
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37 views

Diffie Hellman Group 20 Cisco Asa

It seems to be that I am a little bit lost in the scrap of documentation. I am looking out for a new ASA Appliance that supports lvl 20+ Diffie Hellman. But I cannot find any documentation if there is ...
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2k views

Allow access to printer between interfaces on Cisco ASA5510

I have a Cisco ASA5510 where we have to separate networks on two separate interfaces. The networks should have nothing to do with each other except that network B needs to access a printer on network ...
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1answer
3k views

Cisco ASA site-to-site VPN up but no traffic

I currently have site to site VPN tunnel up between Cisco ASA 5550 & Cisco ASA5506-X. I can see the vpn tunnel is up on both end but no traffic is passing through. Cisco ASA 5550 is receiving ...
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1answer
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Cisco ASA LDAP Group Privilege Level

We have a pair of ASA 5510s (8.4.3) on which we use LDAP authentication for VPN and SSH access. On all of our Catalyst switches, which use RADIUS, we're able to set the shell:priv-lvl to 15 in the ...
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L2TP/IPSec from Windows 7 to ASA 5520

I am trying to setup L2TP/IPSec on our ASA5520 to support a fringe case for one of our developers. The Windows VPN subsystem apparently stores the kerberos or NTLM cookie for the login when you use ...
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28 views

CISCO ASA ASDM Allow internal IP to access external IP

I'm running ASDM 7.2 and have 2 servers on the same local ip range that can communicate ok. These 2 servers have external IP's and I need to get them communicating on the external IP's but this fails. ...
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1answer
30 views

ACL NAT'ing on Cisco ASA 9.2

I'm trying to implement (P)NAT on a active/standby pair of 5525X running v9.2 I need to NAT an ACL not an object and I've been unable to work out how to do this. The ACL is access-list 3G_traffic ...
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47 views

Overwriting Cisco ASA config using only console access

I'd like to be able to apply a pre-written config to a Cisco ASA 5505, but presently I only have access to it via the serial console and not over the network. Various sources suggest pasting the ...
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8 views

Convert 8.3+ NAT to 8.2 Cisco ASA

The following NAT rule setup works on 8.3+: nat (inside,outside) source static inside_net inside_net destination static vpn_net vpn_net no-proxy-arp route-lookup However, trying the same on 8.2(5) ...
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1answer
51 views

Is it possible to configure a Cisco AnyConnect VPN to use two separate LDAP authentication methods simultaneously?

I have a Cisco ASA 5505 with a Security Plus license along with an AnyConnect Plus license. I don't currently have any VPN configuration on the ASA as I'm still in the planning phase. I would like to ...
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35 views

Cisco ASA 5505 Issue - “Flags SYN on interface..”

I've been trying to remotely configure a Cisco ASA 5505 in front of a dedicated server hosted with OVH. Unfortunately my qualifications and even experience very rarely touched on Firewalls. However I ...
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2answers
3k views

How can I configure my network to allow bi-directional traffic between two lans?

Here's my current setup: (and it may require reworking): 2 LAN networks - 192.168.41.0, 192.168.21.0 2 Public IP's (they are assigned to us by specifying MAC Addresses - not subnetted) 24.53.x.x,...
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1answer
1k views

How to adjust ASA Failover Times?

I want to adjust my failover poll timing. The proposed column is what I am wanting to set it up as. I believe the following commands will obtain what I want from the first two rows but Im not sure ...
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1answer
29 views

Port Forward on Cisco ASA 5512-X

i would to improve port forward from an external host to an internal network, on my ASA. The network and the host are on two different interfaces, the internal network is on the internal interface g0/...
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4answers
3k views

Cisco ASA user authentication options - OpenID, public RSA sig, others?

My organization has a Cisco ASA 5510 which I have made act as a firewall/gateway for one of our offices. Most resources a remote user would come looking for exist inside. I've implemented the usual ...
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1answer
19 views

Using a VPN tunnel on a Cisco ASA to connect locations

I am looking for some advise on how to connect some of our locations together, using a site-to-site VPN on our Cisco ASA 5515-X. At the moment we have a 5515-X at our head office and a Cisco 887A ...
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27 views

IPSec - Is it possible to have remote access clients (road warriors) all behind the same NAT device?

This is a topic that I find mixed information on. Is it possible to have two IPSec road warriors that are behind the same NAT, even with an ASA as the VPN endpoint? I have been trying with Libreswan ...
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1k views

Proxy setup for ASA

I need to publish 2 sites through a proxy from the internet to my secure network behind the asa. In an ISA you would just create a proxy and go on your way. However I have asa 5510's and don't see ...
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34 views

cisco asa public server nat issue

I have been tasked with some ASA configuration coming in a few weeks, and to test out some configuration options I have setup a web server on my local network which I would like to be able to access ...
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21 views

On Cisco firewall, show access-list main rules only (with line numbers)

For example, if I do a sh access-list Lets say I have a rule on line 2 that has one object-group to another object-group connected on X ports. Well, there may be 30 lines below that, that all say ...
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32 views

Cisco asa 8.4 PAT with static NAT

I am trying to make sense of the changes that Cisco has made to NAT on ASA > v8.3. I have a network which is being PAT'd to the outside interface address, and want to add a static NAT from the outside ...
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47 views

Cisco ASA PBR and multiple ISPS for multiple SIP Providers

Have a question about policy based routing on my Cisco ASA 5515 running 9.5 and think despite it being available in this software version that I might be screwed. I have an asterisk PBX behind the ...
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15 views

AnyConnect on ASA5520 licensing required? [duplicate]

longtime reader, first-time poster. I'm currently working in a small shop and I am new to the Sys Admin role. We pay our ISP a lot for our VPN and we are looking for a different provider. We are ...
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20 views

Openswan to Cisco ASA IPSec tunnel - specific IP address range required. Netmap?

I'm attempting to set up a VPN tunnel between a Cisco ASA 5520 and an Openswan server running on Ubuntu 14.04 on a Amazon VPC instance. I do not have access to the ASA, and have been given the ...
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23 views

How should I use Cisco ASA 5510 and Catalyst 3550 together

So I took on a project at my job moving four separate networks into one Colo center. Currently I broken everything down from the four networks into 4 VLANS on the ASA 5510. Each are assigned IPs ...
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87 views

ASA INSIDE to INSIDE traffic being dropped

An ASA 5505 is being used to route between two networks as it contains routes to everything. The following depicts the network topology. I have tried various combinations of access lists such as: ...
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23 views

Cisco ASA 5510 ASDM 6.4 (2) unable to do port translation

I have a situation, where I want to do port translation. For example I can acces my service outside ip:8081 that is forwaded to server:8080. I should have a NAT rule option to add PAT like in this ...
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4k views

How should DNS be configured for remote VPN access to a Windows Domain?

Suppose you have a small windows domain configured as follows: domain name is ad.example.com (as per these guidelines) DC1 is at 10.10.10.3 DC2 is at 10.10.10.4 DC1 and DC2 are running the AD-...
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36 views

Dual path VPN on ASA 9.2

We have two sites that are joined by a VPN over two WAN links, one primary and one backup only. The VPN endpoints are a pair of active/standby ASA clusters at each site. Each site also has multiple ...
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24 views

analyze Cisco ASA high cfwConnectionStatCount value

SNMP monitoring of our Cisco ASAs includes the CISCO-FIREWALL-MIB::cfwConnectionStatCount.protoIp.currentInUse value (OID .1.3.6.1.4.1.9.9.147.1.2.2.2.1.5.40.6), described as "number of connections ...
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85 views

Setting up Cisco ASA VPN to use both radius and local users

I've got a Cisco ASA setup with L2TP/IPSec VPN, all is working well except for one minor issue. Ideally, I'd like to be able to log on to the VPN using either that RADIUS server users or the local ...
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1answer
1k views

Outbound Traffic Logging on ASA 5520 possible?

Taking a look at the ASDM (6.4) for my ASA 5520, I get a nice summary of the traffic status, with items like "interface traffic usage", and "connections per second". This works well, but only shows ...
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48 views

Issue with Cisco ASA 5515-X VPN Connection

I had an existing setup with a 5515-X serving as my firewall and VPN, which worked fine. Since moving to a new location, and thus a new outside interface IP, I can successfully connect to the VPN, but ...
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23 views

ASA 5555-X ACL confusion

I'm wondering what this access list means on the ASA 5555-X? access-list TEST_INSIDE extended permit udp host 192.168.1.99 eq 7600 host 192.168.1.1 I am confused about the 'eq 7600' part since I ...
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2answers
32 views

Cisco ASA 5505 - Help understand/update the config

Let me preface by saying I am not a network administrator by trade and this firewall was set up originally by a Cisco consultant who is no longer available. We have a small office with a Cisco ASA ...
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35 views

Shrewsoft VPN passthrough Cisco ASA 5505

I have a shrewsoft VPN connection setup that passes through a Cisco ASA 5505, it manages to connect okay and i am able to ping etc but if i try to load anything e.g. web interface nothing is returned. ...
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1answer
31 views

Cisco ASA5505 - icmp deny any outside breaks internet - how to block outside pings?

We want to block any ICMP requests that are initiated to our network from the public internet. I ran icmp deny any outside, but when I do that, it takes down our internet - nobody can load web pages. ...
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1k views

OpenSSL cannot convert PKCS12 exported from Cisco ASA 55xx

I have exported an existing certificate+key from an ASA 5510: asa5510(config)# crypto ca export MYTRUSTSTORE pkcs12 MYPASSWORD Saved the output in a file (vpn-cisco.pkcs12), and now I am trying to ...
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2answers
108 views

Route traffic from ASA to different firewall default gateway

I should probably start by explaining the topography, we have two different internet connection with separate firewalls.One is an asa and one is a meraki, the default gateway for all the servers ...
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729 views

CISCO ASA 5505 Base Licence - Ability to interpret http request headers (host headers)

Base licence configured CISCO ASA 5505 is not capable of routing based on interpretation of the inbound http request headers - affectively host header redirect - am I correct? If I am correct will an ...
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152 views

Cisco ASA TCP connections never time out

Our Cisco ASA 5515 will sometimes have thousands of connections with an idle time > the configured connection timeouts. In many cases the connections show as idle for 100+ hours. This eventually leads ...
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Cannot Route RDP Traffic Through AWS Site-to-Site VPN

Hi I have establish VPN connection to the AWS VPC, but still there are some routing issues that make RDP connections fail to initiate, because the router WAN IP is differs from the Public IP, lets say:...
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3answers
15k views

“NAT reverse path failure” ASA 8.3

Forgive me, as I'm not very experienced with ASAs, but I believe what I have configured should be working. I have an ASA 5510 running version 8.3(2), which is connected to internal, external, and dmz ...
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1answer
69 views

Overcome asymmetric routing while migrating between sets of ISPs

We are migrating from one set of addresses to another set, both /24, and trying to minimize any down time during the migration. Ideally we'd run both for a period of time as we shut down the old ...
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1answer
6k views

Cisco ASA Site-to-Site VPN Dropping

I have three sites, Toronto (1.1.1.1), Mississauga (2.2.2.2) and San Francisco (3.3.3.3). All three sites have ASA 5520. All the sites are connected together with two site-to-site VPN links between ...
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32 views

Manually specify a tunnel gateway for an IPSec VPN Connection (ASA)

I have currently got several VPN's on-premise that are setup on the outside interface and using the default gateway on the interface as an originating source of the VPN tunnel. Although the outside ...