Cisco VPN :: Setup Connection Between ASA 5505 And CentOS Server?

Oct 7, 2012

i want to setup a vpn connection between Cisco asa 5505 and centos server.
Here is my senerio:
ASA 5505 
Public IP address
Local NETWORK : 192.168.6.X
 Centos Server
Public ip address :

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Cisco WAN :: 5505 With 9.1 VPN Server Setup?

Mar 17, 2013

ASA 5505 Sec plus lic w/OS 9.1
I want to setup a quick and simple VPN server on my ASA. I want to do local authentication and, once authenticated, I want to allow all internal access. I only have 1 WAN IP. I'm finding a ton of conflicting info online. The ASA is already setup and is operational. I just need the correct commands to setup the VPN.

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Cisco Firewall :: Setup ASA 5505 Access Or NAT Rules To Inside Server / IP Cam

Oct 25, 2012

I'm having trouble setting up the correct rules on an ASA 5505 I'm using in my home office.  I have a couple of IP Cams I need to access remotely.
I've tried setting up simple NAT(PAT) and/or Access Rules, but it hasn't worked.  I have a single dynamic IP for the Outside interface.  Call it and I am using PAT.  The CAM is setup to connect on port 80, but could be configured if necessary.  I've tried setting up NAT Rules using ASDM as follows:
Match Criteria: Original Packet
Source Intf = outside
Dest Intf = inside


I'm afraid to use CLI only because I am not confident I'll know how to remove changes if I make a mistake.

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Cisco Firewall :: Unable To Setup VPN Between Windows 2008 Server R2 And ASA 5505?

Sep 9, 2012

I have assigned a task to configure a vpn between windows 2008 server and cisco asa 5505, what kind of vpn should i go with as the windows 2008 server r2 is on cloud and is it possible to configure site-to-site vpn for this network senario or not.. i have try ikev1/ipsec remote access vpn with l2tp with (CHAP, MS-CHAP v2) and couldn't find any document which will allow me to configure windows 2008 server to behave a client and connect it to asa, well what i did is that i configured a dail-up connnect with l2tp and found the following debug message
Sep 09 20:04:02 [IKEv1 DEBUG]IP =, Oakley proposal is acceptable
Sep 09 20:04:02 [IKEv1 DEBUG]IP =, IKE SA Proposal # 1, Transform # 1 acceptable  Matches global IKE entry # 1


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Cisco VPN :: Setup A Vpn Connection At Remote Offices With A 5505?

Apr 11, 2011

I have setup a vpn connection at my remote offices with a 5505.  At my main office I have a 5510.From my remote offices I can PING my Main office server.  However when I go to set up a vpn connection through windows network and sharing center I can't seem to have the connection connect.....

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Cisco Firewall :: ASA 5505 With Dual ISP - How To Setup Backup Connection

May 22, 2012

how can I setup that the backup connection will start but after 30s of icmp timeout the default gateway (tracket object -
My configuration:
sla monitor 123
type echo protocol ipIcmpEcho interface outside
num-packets 3
frequency 10
sla monitor schedule 123 life forever start-time now
route outside 1 track 1
route backup 254
track 1 rtr 123 reachability

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Two Internet Connection (same ISP) To A Single LAN (8 Computers With Server Setup)

Aug 9, 2012

I have 2 internet connection with the same ISP, SmartBro 2mbps.We have 7 computer unit plus 1 unit that will serve as the server.Is it possible that we combine the two internet connection into just one LAN so that all PC's will see each other. Mainly for network gamesBTW, we don't have any routers or switch yet.

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Cisco VPN :: Setup Site-to-Site Connection With 5505 ASA Using IPSec And Isakmp?

Aug 8, 2011

im drawing a blank trying to setup a site to site connection with a 5505 ASA using ipsec and isakmp.i have the pre shared key as well as the external address of the other end of the tunnel but do not remember what the commands are to setup the crypto map and isakmp.

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CentOS VPN Box Neighbor Table Overflow?

Aug 24, 2011

I'm having problems with a linux box we're using as a VPN/IPtables firewall. The setup is such that we're sitting this thing behind a basic Comcast cable modem will all the pass through options set. The outside facing interface is set to DHCP and grabs an IP address from Comcast. Inside interface is statically set with the same being said for the CIPE interface. The inside interface works until we plug up the outside. When we plug up the outside interface, all network traffic to the box effectively shuts down and the /var/log/messages is flooded with "neighbor table overflow" messages. Sometimes, this takes a few seconds to appear, and when that happens I can track some traffic hitting the far side of the tunnel, I.E. it works for a few fleeting seconds.

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Tethering A Windows XP Laptop To A CentOS 6.0 Desktop

Jul 29, 2011

I have a laptop running Windows XP Service Pack 3. There is a CentOS 6.0 desktop next to it. The Windows XP laptop has a Wi-Fi card, and it has Internet access. The CentOS computer does not have a Wi-Fi card or Internet access.

I don't want to purchase a wireless NIC for the desktop. What are the steps I can do to get an Internet connection from my Windows XP laptop to the CentOS desktop?

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Publishing A Local Website Using NO-IP (free Service) In CentOS?

Nov 15, 2011

I've just registered with NO-IP (free account), created a host, installed the client (in CentOS) and I want to see a website I'm running locally in that computer from another computer (via internet :). How do I access it?My host is " "And in that unix box I've got a published website that I can access from any browser in the following URL: [URL]When I log in to from the browser from another computer I get the following error message:

Quote:The connection was reset- The connection to the server was reset while the page was loading.The site could be temporarily unavailable or too busy. Try again in a few moments.If you are unable to load any pages, check your computer's network connection.If your computer or network is protected by a firewall or proxy, make sure that Firefox is permitted to access the Web.

How do I tell CentOS that I want to redirect that site I'm hosting locally [URL] to [URL]? I believe that's not done automatically. How do I configure the redirection?

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How To Automatically Detect New Network Card In CentOS 6 / RedHat

Sep 5, 2011

I'm using CentOS 6 in a virtual environment. When cloning a virtual version of CentOS, the old eth adapters are "removed" and replaced with new ones and net MAC addresses. However, the ifcfg-ethn files still exist. I am trying to figure out how to get CentOS to automatically rescan & recreate the network adapters / eth files, just like it did on install. url...

I know there is a quick way to do this in the GUI, but we are using a server so GUI does not apply in this case.

however Kudzu has been removed as of Centos 5 so I would rather avoid that. There is a procedure that Linux runs on initial install - what that is so I can manually trigger it?

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Cisco Firewall :: ASA 5505 - Proxy Server Send Register To Hosted Server Private IP Changed

Aug 23, 2011

We have Cisco ASA 5505 with ASDM 5.2 We have one Proxy server in our Local Lab and pointed to Hosted service(Simple Signal)issue is, When our proxy server send register to hosted server, ASA change private IP and post with outside IP and src port as 1063 every time.

Here is debug log on real time monitoring.
Aug 24 2011    05:21:19    302015     Built outbound UDP connection 3774 for ( to inside: (
Aug 24 2011    05:21:19    607001         Pre- allocate SIP Via UDP secondary channel for inside: to from REGISTER message
Aug 24 2011    05:21:19    710005     UDP request discarded from to

Here is Our ASA Outside IP address is Hosted server IP address. My ASA config is attached.

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MSCHAPv2 / Setup Secure VPN Server Using Windows Server 2012 Without Domain?

Jan 10, 2013

i've been using a VPN to connect to my home network from elsewhere for a few months. It's set up as follows:

Maximum Strength Encryption
EAP-MSCHAP-v2 Authentication

Now I find out that MSCHAPv2 authentication has been broken and is no longer considered secure (even by Microsoft), so I want to change the protocol I'm using to make it secure.

However, I've spent 3 hours now researching this and I cannot for the life of me figure out how to use a better protocol on my Windows Server 2012 home server. I've tried setting up PEAP authentication (still PPTP) a la Microsoft's recommendation document, but it requires a certificate. I've created a self-signed certificate but it seems I can't issue certificates (via this method) without being a member of a domain, so I'm stuck. I can't even get started with L2TP since I can't find the option for it.

My question is this: Is there a way to setup a secure VPN server using Windows Server 2012 without a domain? If so, how do I do this?

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Cisco VPN :: To Setup Anyconnect On ASA 5505

Aug 31, 2010

To set up AnyConnect on my ASA5505? I have my VPN access working properly through the Cisco client however I want to be able to use the clientless program as well  that is available.

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Cisco WAN :: ASA 5505 IDS Promiscuous Setup

May 7, 2012

I ordered a IPS module to a small ASA to replace a Snort IDS Server.I want only to perform IDS and reporting (not inline) The design (simplified) is
The problem is that i read this morning that ASA cannot handle this type of scenario, it can only analyse the traffic that is passing through it. Is there a chance to make this work ?

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Cisco VPN :: How To Setup L2TP On ASA 5505

Jun 13, 2011

There is so much mis-information on the Internet and Cisco's own support site has bits and pieces everywhere (I've found at least 5 support pages in Cisco that address this subject), none work or are directly targeted at what I would consider is a major use case for this product. I can see from the many posts everywhere that getting L2TP/IPSEC to work is a major problem, requiring many configuration steps that all have to be perfect and there seems to be some trick to get it to work that most people struggle with. Most of the advice out there is impertinent and highly technical but doesn't work.
I would like to know if there is any consolidated instructions that WORK to create a VPN server on the 5505 using the ASDM and also how to set your Windows 7 (or 2008) client to work with it.
Like I've said, I've spent hours and hours on this and have yet to get anything to work. I have a brand new 5505 connected directly to DSL (static IP) that I ran the wizard on and followed the best advice I could find (by the way there's TONS of information on getting XP to work but afaik, this does NOT work for windows 7). Now that I've tried various things without success, I believe I've gotten it so fouled up I need to reset to factory defaults and start over.
I also have another brand new 5505 connected to a different DSL line.   Behind that firewall, I have both windows 7 clients and windows 2008 server.  I've tried lots of different things to get these to work including the registry hacks (which, if indeed is required, I seriously can't believe that Cisco hasn't given us a tool for).
I have tried to use the ASDM to do all my programming as I find the CLI to be extremely error prone and virtually incomprehensible.So, what the world needs is one place that gives all the instructions on what to do, step-by-step that really work for this simple use case of windows connecting to the ASA.

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Cisco VPN :: ASA 5505 Split DNS Setup

Mar 2, 2011

I have an ASA 5505 configured using easy VPN connecting to our corporate ASA.  The ASA5505 is configured for network extension mode with a routable subnet.  The clients that hang off the ASA 5505 are DHCP and get their IP address and DNS settings from the ASA 5505.  I have a split tunnel setup, so only certain networks go over the tunnel back to corporate.  Local Internet browsing goes out the ASA 5505 to the ISP.
My questions is how to setup split-dns.  i would like to have my clients query the ISP's DNS servers for Internet based websites and when they need to access the exchange server the query goes to our corporate DNS servers.  I see a setting for DNS names under the group policy on the corporate ASA, but how does the client know which DNS server to use?
The clients receive a primary DNS server (ISP) and a secondary (Corporate DNS) from the ASA5505.

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Cisco VPN :: 5505 - Most Secure VPN Setup

May 26, 2013

I have an ASA 5505 that I would like to use only as a VPN access device into my network. I am looking for the most secure setup.
Currently I have a router with 4 networks/subnets: DMZ, public, protected, perimeter. DMZ is public DNS and web, no access to any other subnets, only 80 and 53 from public. Perimeter is an edge email server, only port 25 allowed to the email server on the protected subnet. Protected is all internal servers and workstatoins, no access from any other subnet and limited access out to public.
Where would I place the VPN device?

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Cisco ASA 5505 - VPN On Stick Setup

Aug 13, 2012

I have been asked to setup a VPN on a stick setup so that people on the move can use the encryption of our SSL VPN for web browsing etc using Any Connect. This works fine, whats my ip shows the external IP of the office when connected to the VPN and all traffic is pushed down the pipe. The only issue is when connected I have no access to local resources such as IP printers etc. How to do this on 5505?

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Cisco Firewall :: Initial ASA 5505 Setup?

Aug 4, 2011

I have a new Cisco ASA 5505 which I am trying to just setup so that all computers on the LAN can get to the internet (browsing and ping). My current setup attached.

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Cisco VPN :: Setup ASA 5505 With Another Or IOS Router (Static IP)

Nov 1, 2011

I have an ASA 5505 with a dynamic IP address from the ISP.What I need to accomplish is the following:
- Either setup that ASA (Dynamic IP)VPN with an IOS router (Static IP)

- Or setup that ASA (Dynamic IP) with another ASA (Static IP)

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Cisco VPN :: L2L Setup Between Two 5505 ASA With Overlapping​ Subnets

Mar 25, 2011

I need to setup a L2L vpn between  two ASA 5505 model. but due to poor planning and documentation both sites has same subnet ( now i need to set up L2L wtih overlapping subnets. is it possible with asa 5505?

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Cisco :: Branch Office Setup With ASA 5505

Apr 23, 2013

I have a problem with a branch office setup, and I can't for the life of me think of what the problem is.I have a remote office setup, using an ASA 5505 that is set up to establish an easy vpn connection to the central network.  The connection at the branch office is a 20/5 cable modem, the central network has a 25/25 fiber connection.
The issue I have is this.  Wired clients work fine at this branch office, at least 95% of the time.  I have a lightweight AP there that can come up and join the controllers at the central network, no problem.  I haven't done anything with H-REAP because there are really no resources locally they need that would allow them to do their work, so all traffic is tunneled back to the WLC.
Wireless clients can authenticate to the AP, and I can get 15-20ms ping responses from them all day.  Latency never comes close to the 600ms proposed limit with CAPWAP.  Yet, for some reason the performance of the clients is problematic.  Webpages will frequently not load correctly, they experience some freezing, and with one application we use - it refuses to load completely.If we bring these same computers to an AP connected to our central network, on the same SSID, they work flawlessly.
Something about this particular location is causing a lot of grief for our users.For what it's worth, we are running WCS and the WLCs are on  The ASA is running a pretty basic configuration, pretty much out of the box with the easy vpn configuration entered.

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Cisco Firewall :: ASA 5510 And 5505 Setup

Aug 16, 2010

I currently use MS ISA Server 2006 to protect a windows internal network, where there is also an MS Exchange server. I have acquired a Cisco 5510 to enhance security at main office. Later I will have ASA 5505 for branches, including VPN-ning. to have firewall at main office. I have several public IPs and would like to setup DMZ for Web, Exchange server and FTP. How do I setup interface and sub-interface for the DMZ?Can I continue using ISA Server connecting to Cisco 5510 on the perimeter? If so, How do I set the interfaces (and sub-interfaces) as well as NAT-ting and access configuration between the inside and outside?

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Cisco VPN :: Setup Two Separate IPSec VPNs On ASA 5505

May 12, 2013

I'm having trouble setting up a second IPSec VPN tunnel on my Cisco ASA 5505 to another office. I was able to setup the first one with no problem through the ASDM, but have not been able to get the second one up.The IPSec tunnel is connecting to a WRVS4400N router at the other office. I tried debugging crypto isakmp, and crypto ipsec, but I'm getting nothing. Below is the config. Does something look wrong on my end? I also attached a screenshot of the parameters setup on the remote router.

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Cisco VPN :: 5505 - Recommended QOS Over DSL Low Speed Link Setup

Jan 13, 2013

I have two 5505's facing each other over 10meg dsl internet links with slow up links, I think that the uplink is around 768K and down is 10meg.Behind each ASA on each end sits a pbx they are using H.323 point to  point trunk for connectivity to talk to each other one the g.729 codec.  I've read a little on Qos and I'm wondering if GRE over IPSecis the way to configure this setup.  I'm needing recomendations. There are is no qos at present configured and its not working well at times. There are only 5 phones at the remote site and 5 computers. The remote end only supports 3 vlans as well. I'm new to ASA.

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Cisco Firewall :: ASA 5505 Transparent Mode Setup?

Dec 5, 2011

i need to configure a ASA 5505 in transparent mode.learned from Internet, my configuration is :

int e0/0 --- vlan 1---->nameif outside
int e0/4 --- vlan 2------> nameif inside
gloable ip is
 http server enable
http inside
when i connect the outside interface to one PC with ip addr my PC connect to inside interface with ip cannot ping each other even when i set rules as permit any any on both direction

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Cisco VPN :: Anyconnect VPN Setup But Not Responding On Port 443 Outside ASA 5505

Apr 24, 2013

I followed a few Youtube videos and replicated another ASA's VPN configuration through ASDM to create the Anyconnect VPN on the ASA 5505.
The problem is, after everything checked and triple checked, I still cannot get to https://external_IP.  I can post configs if needed, but I really did replicate another ASA almost exactly.An online port scan shows my external IP as "not listening on port 443".However, when I run on the ASA :
I get the following (external IP changed to for the forums):
Protocol  Socket    Local Address               Foreign Address         State
TCP       0004426f    *               LISTEN
SSL       0574f7af  *               LISTEN
DTLS      0577b0ef  *               LISTEN
TCP       06fa8d1f   *               LISTEN
SSL       079385bf   *               LISTEN

So it does appear to be listening on the external IP on the outside interface correctly.I went ahead and tried the whole "change the ASDM port" as you can see from the inside interface being changed to 444 but management isn't even enabled on the outside interface so I'm not sure why it is acting this way.
The outside interface is plugged into a DSL modem.  I don't think this DSL modem has any real intelligence, but I was going to disconnect the ASA and plug my laptop into the outside interface (on the same subnet) and then see if I could reach it.  That was the only thing I could think of...that possibly the DSL modem was blocking the inbound traffic.

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Cisco Firewall :: ASA 5505 - Connection Timeouts / Connection Failures

Dec 18, 2011

We're getting "Connaction Timeout / Connection Failure" error messages several time per day. Here is our setup:
Verizon FiOS Internet (ONT Box) --> Cisco ASA 5505 --> EdgeMarc 4500 Router --> Cisco 300-24G Switch --> Dell PE1950 Servers
From past few months, we keep getting Connection Timeout and Connection Failure error messages in our vendor application which connects to SQL Server 2005. Also Terminal Server 2003 keep disconnecting for every few hours.After several days of troubleshooting, we come to know that this Cisco ASA 5500 is not working properly. When I access the ASDM, it shows several warning messages.I know there is a setting option to configure TimeOut, but is there anyway to test and track the ASA 5500 regarding this Timeout issues?

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Cisco Firewall :: Two 5505 Redundant With Active Standby Setup?

Oct 21, 2012

I have two 5505 ASA.  I would like to know can I make two 5505 failover redundant with active standby setup?

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Cisco :: Asa 5505 - Create A (remote Access Vpn) Setup For Ipsec?

May 8, 2012

I have a newly aquired asa 5505 that I just set up to the bare minimum configurations. I followed a cisco paper on how to create a "remote access vpn" setup for ipsec. I can sucessfully connect and establish a VPN, but when I try to access an inside resource from the vpn address, the asa blocks it.

Specific error is: Code...

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Cisco VPN :: Authentication Error 5505 8.3 Setup Client Vpn To Windows

Nov 6, 2011

I'm trying to set up a 5505 (running 8.3) so that i can use the client vpn through RADIUS authentication.I have set up a new local RAIDUS windows box and used the ASDM asistant and a few other guides to setup the 5505.

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