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

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udp 300 - acl drop - flow is denied

I am facing below issue after connecting l2tp with Cisco asa. Split tunnel is configured. It drops dhcp packets. Here is capture and config. 29: 22:39:38.733909 192.168.255.1.68 > ...
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15 views

How to restrict asdm access based on Active Directory group membership?

I have a Cisco ASA 5505. I have enabled AAA authentication for ASDM to authenticate with my Active Directory server. How can I restrict logging into ASDM to certain users that belong to a specific ...
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1answer
44 views

Multiple DHCP servers in multiple subnets, one DNS server

I have existing network with two subnets - one is the main company subnet (192.168.1.0/24), the other is completely separate VLAN for Guest Wireless and BYOD devices (192.168.2.0/24). There's Windows ...
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19 views

Multiple public IPs shared on a router to three Proxmox servers [closed]

We're moving out from one server to three and change provider. I have (now) two public IPs and I want to use them on two VMs running on one Proxmox server (let's just dump the other two servers for a ...
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23 views

IPSec tunnel through ASA from specific IPs

I'm having some difficulty getting an IPSec tunnel to work through an ASA5510 that is already configured with a number of different tunnels that it terminates, as well as individual VPN clients. ...
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1answer
79 views

Cisco ASA 5550 rebooted itself, logs cleared

we had Cisco ASA5550 in Active/standby mode which worked without any issue for over 1 year. Recently, we started having issue where the VPN tunnels would drop to sites and have internet outages. We ...
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1answer
40 views

Wireless authentication with DD-WRT, Cisco and Microsoft

I'm looking for a way to authenticate my wireless users beyond them just knowing the wireless password. Ideally they would join the access point then get dumped to the login portal that they'd have to ...
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1answer
63 views

What is the proper way to create a vlan?

My goal is to create a separate VLAN, that will be isolated from the rest of the office, I just want them to have internet. Normal pc stations x1 HP Procurve switch V1910 x1 cisco asa 5512-x What ...
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1answer
38 views

ASA5505 don't allow FTP traffic

I'm new to CISCO and ACLs and NATs but I''m willing to learn. I am having problems allowing FTP access through my ASA5505 ASA 9.2 (2) ASDM 7.3(3) This is my problem, I have a domain which has my ASA ...
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77 views

ASA 5505: How do I access the DMZ web server from the inside using the public IP?

We are using a 5505 ASA Sec+ (8.2). There are three interfaces: inside (172.17.0.0/24), dmz (172.16.0.0/24) and outside (1.2.3.4 for the example). There are static NAT rules set up translating ...
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19 views

Routing and VPN Setup

The network setup is as follows: Router: eth0 1.1.1.1 (outside) eth1 192.168.54.4 (inside) eth1 10.54.4.4 (inside) Cisco ASA5505 192.168.54.1 (inside) 10.54.4.1 ...
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60 views

Cisco ASA failback to preferred IPsec peer

I just configured my Cisco ASA 5505 to failover to a backup internet line when the main outside interface is down. This all works fine. Also, I have a site-to-site IPSEC VPN tunnel from this ...
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1answer
175 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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29 views

Cisco ASA 5505 no NAT

I have a cisco asa 5505. The outside and inside IPs are private IPs so I do not want to NAT the inside IPs as they go out the Outside interface (there is a router upstream of the ASA 5505. Would I do ...
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27 views

Allow Ports 80, 443 and 81 through ASA 5510

We are switching our VoIP provisioning method from TFTP to HTTP provisioning and have been asked by the VoIP provider to allow inbound access on ports 80, 81 and 443 from their two network networks on ...
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1answer
26 views

CISCO ASA: Add specific command to a privilege level

i am facing the following issue, created a new account with a "read-only" access on a CISCO ASA 5510. This account will be used in a script that will back up the running-config of the ASA. the ...
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55 views

asa5512x: ipsec site-to-site vpn with tcp instead of udp? is it possible?

the cisco documentation for ASA 9.1 (I have 9.1.2) seems to imply that ipsec vpn with tcp/ip is only for remote clients, not site to site vpn. But I repeatedly see people mention vpn over tcp to ...
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0answers
18 views

Tethered VPN on Macbook fails to connect, but standard VPN over WiFi works [closed]

I have a MacBook using the Cisco client and it works fine except when I use the special Mac/iPad ability to tether over the iPad data connection. For those that are unfamiliar with this, the Mac and ...
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37 views

Remote Desktop Gateway temporarily unavailable outside LAN

I have setup Microsofts RD Gateway on a server in one of our subnets. We have multiple subnets separated by a Cisco ASA firewall. One for servers, one for desktops etc. If I run mstsc from the server ...
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15 views

how can a low security group communicate with a high security group in ASA 5525

My DMZ Interface has security level 50 and my interface "old_network" has security level 40. My DMZ has a range 172.16.20.224/27 and my old_network has 192.168.1.0/24. The DMZ can communicate with ...
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1answer
29 views

cisco asa 5512-x policing

I have a single 100mb leased line that will be shared by three unrelated companies. We are looking to buy a cisco ASA 5512-X and I need to use policing to ensure that each company receives 1/3 of ...
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1answer
52 views

Cisco ASA separating networks

We are using a Cisco ASA 5505 running ver 9.0 to separate our corporate (inside) network from a dev lab (outside) network. We would like to use NAT or PAT to forward the inside interface IP to a set ...
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3answers
277 views

Why can i not ping my host behind the firewall. Cisco asa 5505 [closed]

Can anyone please help me to figure out what in my configuration of the Cisco asa 5505 is wrong or missing. I have multiple host behind my firewall these hosts run different websites on port 80. I am ...
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1answer
237 views

Nmap external scan shows port open, ASA says port is not open, but do get an socket

Folks, have a weird one, need your expert help. For one of our heavily used external facing server which came up in an audit, nmap -Pn scan shows the following: Starting Nmap 5.51 ... Host ...
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303 views

Site-to site Configuration between OpenSwan and Cisco ASA

I am making site-to-site vpn connection using amazon ec2 linux and cisco asa router ( please note i donot have access to router only configuration is provided.) CISCO ASA CONFIGURATION : ...
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71 views

Cisco ASA 5505 VPN users access to local LAN denied

I have this running config: : Saved : ASA Version 8.2(5) ! hostname TESTATES domain-name TEST.com names name 192.168.1.0 AsusWireless ! interface Ethernet0/0 switchport access vlan 2 ! interface ...
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238 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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49 views

Cisco Cryptochecksum generation

I ran 2 commands - a show start and a show run. I noticed that the cryptochecksums were different. My main question is understanding the cryptochecksum and how it is generated. Is it different ...
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39 views

Determining the side-effects of enabling unicast reverse-path forwarding on Cisco ASA 5505

I am trying to find out what (if any) negative side-effects there would be to enabling Unicast Reverse Path Forwarding (uRPF) on a Cisco ASA 5505 - I need to do this on a router which I do not have ...
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2answers
185 views

HttpServletRequest.getRemoteAddr() always returns 127.0.0.1

We're attempting to identify where specific requests are coming from inside our Java application. We have changed the log files to include the IP address and we're using ...
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1answer
95 views

Find source(s) of dropped packages in Cisco ASA GUI

we are using pair of ASA 5520 Firewalls with ASDM 6.4. Can someone enlighten me, how to find out which is(are) the source or target ip(s) when we got a hugh bunch of dropped packages come in (by ASDM ...
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1answer
51 views

Need help understanding a bandwidth restriction on a Cisco ASA

We have a guest wireless network here and it's bandwidth is limited too 1 Meg per second. I did not configure this and am trying to pick it up. I've found these lines in the cisco config but i'm not ...
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5answers
134 views

Multiple Computers Running IIS with a Singular Public IP how to handle incoming communications?

At our company, we have three separate servers that house IIS currently. Each of these three servers have the same public IP address and essentially reside on the same network under different subnets. ...
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218 views

Cisco ASA firewall blocking requests to internally hosted DNS server

I have a DNS server behind a Cisco ASA firewall. The Cisco firewall is performing NAT. When inside the network, I can NSLOOKUP directly to the server. When the client is external, requests time out. ...
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2answers
148 views

Cisco Easy VPN - Port forwarding needed at remote end?

I was in the process of setting up a site-to-site ipsec vpn tunnel behind a mobile broadband router when i found out that i wasnt able to port forward on that network so i wont be able to use the ...
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110 views

WatchGuard Authentication equivalent with Cisco ASA X series

I am in the process of implementing Cisco ASA 5512-X devices with FirePOWER to replace WatchGuard firewalls. The WatchGuard devices in use are currently wrapping access to various services with a ...
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3answers
187 views

Cisco ASA NAT - internal host see its public ip

I have a server hosted by a provider which uses Cisco ASA to do nat. The problem I have is that the internal server that is nat-ed with a public ip will see its public ip as source ip. This basically ...
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66 views

Cisco vpn access to another router

I am using a Cisco ASA 5505 to VPN into my network (which is working great), and I want to connect to a different network that is on a Asus RT-N66v. For example: network 10.1.1.1 is my VPN and ...
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1answer
56 views

Cisco asa 5505 w/ seperate subnets and seperate isps

I am trying to join two networks together thru the asa. I have a 192.168.0.1 network that is the main domain and has its own isp and is administered by windows server 2008 for DNS and DHCP i also ...
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1answer
315 views

Cisco ASA - difference between inside_access_in and inside_access_out?

So a minor problem we have is any internal servers have no (non-icmp) access to the outside is being blocked. Our current config is: inside_access_in any ---> any ---> icmp inside_access_out ...
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203 views

Route Email to external IP Cisco ASA 5515

I have a cisco ASA 5515X with two WAN connections and one LAN connection. As far as I understand, I hace the firewall configured to allow SMTP traffic through WAN2 interface, but not through WAN1. ...
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1answer
125 views

Can I use ASA5505 to spoof the reply to a heartbeat request?

I have a CISCO ASA 5505 in a home office. It has two subnet, public and private. There is a wifi belkin router on the private net, which provides wifi for some users. That belkin router sends out ...
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1answer
641 views

NAT Rule changes from ASA software 8.0 to 8.4

I have an Access Rule and a NAT rule that works fine with on the Security Appliance Software Version 8.0 The rule is as follows: However, I am having trouble making the same rule work on an ASA ...
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174 views

Include multiple sub-interfaces in Cisco ASA for VPN tunnel

I am trying to create a VPN tunnel between two Cisco ASAs where one ASA has multiple sub-interfaces. Say, In Cisco ASA 5550, I created multiple subinterfaces with VLAN ID as below: Inside, int0/1 : ...
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2answers
150 views

ASA is not forwarding packets to egress interface

We are seeing some very strange behaviour from our Cisco ASA 5505 running 9.1(2) We have a SIP PBX inside our network. It's got a bit of an odd configuration, it listens for inbound SIP requests for ...
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2answers
235 views

High number connections coming from an IP

On our corporate network we're detecting workstations opening too many connections to the IP address 75.126.196.159 (port 3478) causing the Cisco ASA Firewall 5550 to detect a "SYN Attack" and reach ...
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1answer
379 views

Cisco ASA 5510 needs “clear arp <Interface>” periodically to reach a single host

ASA 9.0(3) The symptom is that I can ping from the ASA to any other host in that interface's subnet, save one particular host (that host can ping the interface on the ASA however). If I do "clear arp ...
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1answer
105 views

Secondary IPs on DMZ machines not working

I am moving some virtual machines from my DMZ in a bladecenter over to my new cisco UCS. We are using Hyper-V, and are running Server 2012 on the old bladecenter, and Server 2012r2 on the new UCS. ...
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94 views

ASA 5515-X: Policy based NAT for dedicated uplink

We have bought a Cisco ASA 5515-X and we have the following scenario. Current situation: GigabitInterface 0/0, IP via DHCP, ISP1, Coax, 100M up / 12M down, medium latency GigabitInterface 0/1, ...
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194 views

Amazon AWS Site-to-Site VPN doesn't allow concurrent pings

I have some strange behaviour with an AWS VPC site-to-site set up and would like some help to understand where my problem might be. Set Up I have a VPC with a private and public subnet, there is a ...