Cisco Firewall :: Is Multicast Supported On ASA 5510 For IPSec VPN Clients
Dec 6, 2011
Our customer is using multicast in their internal network for their IP video deployemnt. Internallt on the network everything is working great.
We have two folks in management who want to be able to view the live multicast video feeds of the cameras remotely. I have tried to accomplish this using the Cisco VPN client. Although VPN connectivity is good (we can ping the individual cameras) they are unable to view the live multicast feeds. I enabled multicast globally on the ASA and the inside interface and get the same results.
Is there a way for the ASA to support the remote IPSec VPN client to view the multicast strams?
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May 3, 2011
I need to configure multicast between 2 Csico 5540's lan to lan ipsec tunnel for a Voip application.
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Apr 24, 2012
We were having a discussion of ios firewall vs. asa for smaller clients(less than 50). On using ios firewall(zbf or cbac)and an asa 5505/5510. One of the arguments brought up on using ios firewall on the router is that a router will do an ip sla failover. I have configured a number of isr's for this and i know it works good.
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Oct 20, 2012
i use ASA 5510 and i want to block some urls :
-192.168.2.70 to 79 allow every thing
-192.168.2.80 to 89 : block facebook , myspace, twiter,
-192.168.2.90 to 99 : block facebook , myspace, twiter, youtube , dailymotion
-192.168.2.100 to 199 deny everting
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Nov 5, 2012
We currently have an ASA 5520 communicating with 10 ASA 5510's, all on static outside addresses. I was asked to add 5 additional 5510's on dynamic address. All worked well in testing until it was decided that some of the dynamic clients needed to talk to each other.
My testing shows packets just dying in the 5520.
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Sep 2, 2012
we have a local Netflow collector working fine. We also have a centralised collector that we’d like to use to send the same Netflow data, but it is not being received. We need to send the data via an IPSEC VPN.
When I do a 'show flow-export counters' I can see the packets sent increasing. The local collector is receive netflow data. I am using the below config,
access-list global_mpc extended permit ip any any
!
!IP far end of VPN
[Code].....
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Nov 29, 2012
we have a Cisco ASA 5510 8.4, this device is reachable through a lan to lan IPsec vpn. We are able to activate the netflow export (we see flow export counters incrementing), but the flow is not passing through the vpn. Our netflow collector is on the other side of the IPsec tunnel so we define it linked to the internet interface.Is the export possible through the vpn? I read in a Solarwinds forum that it should not be possible.What ip address is choosen as source interface by ASA? Is there a way to force a source interface?
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Jun 11, 2012
I working on a security solution using ASA firewall. Is it possible to setup a IPSec tunnels on each subinterface of a physical interface on ASA 5510?
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Dec 21, 2010
I'm trying to setup a L2TP VPN Connection on my ASA 5510 to connect with Android/Windows (Native Clients).I'm using the newest Releases:Cisco Adaptive Security Appliance Software Version 8.3(2) Device Manager Version 6.3(5)
My asa config just the interesting part:
crypto ipsec transform-set trans esp-3des esp-sha-hmac crypto ipsec transform-set trans mode transportcrypto ipsec security-association lifetime seconds 28800crypto ipsec security-association lifetime kilobytes 4608000crypto dynamic-map dyno 10 set transform-set transcrypto map vpn 20 ipsec-isakmp dynamic dynocrypto map vpn interface outsidecrypto isakmp enable outsidecrypto isakmp policy 10 authentication pre-share encryption 3des hash sha group 2 lifetime 86400no crypto isakmp nat-traversal
[code]....
If i try to connect with a Windows 7 Client (NOT behind NAT) I get the Error 691.
I see that Phase 1/2 are working with debug:
Dec 22 16:32:16 [IKEv1]: Group = DefaultRAGroup, IP = XXXXXX, PHASE 1 COMPLETED
Dec 22 16:51:25 [IKEv1]: Group = DefaultRAGroup, IP = XXXXXX, PHASE 2 COMPLETED (msgid=00000001)
Then I see this "Error":
Dec 22 16:51:26 [IKEv1]: Group = DefaultRAGroup, IP = XXXXX, Session is being torn down. Reason: L2TP initiated
I don't understand why it doens't work....I tried many templates from the net but nothings works.
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May 29, 2012
Recently, our company wireless AP 1262 connected more than 40+ clients, and sometimes the wireless access speed is too slow. those clients are only for MES data transfer, the date no more than 10K of each stations. So I'd like to know if the one AP can support the network traffic if whole testers transfer the data to Database via this wireless AP1262? and the WLC no clients roaming option for which clients can connect to another AP around. I have checked the WLC and AP configuration. no option for clients roaming to another APs, do you know how to configure this AP's Clients move to another APs?If we setup the new APs in the location, does the clients will be auto connect to this new AP?
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Jan 9, 2013
How many maximum clients are supported by cisco aironet 1262 AP and also by a 5500 Wireless Controller?
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Aug 7, 2012
what is the maximum number of AAA clients supported by a single ACS5.3 instance?
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Jul 30, 2011
How many ipsec tunnels are supported in Cisco 3900 routers(with & without the hardware processors)?How much is the throughput of the 3900 routers?
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Mar 26, 2013
i am now trying to configure a Cisco Small Business Pro SRP 521w router for a branch office, i am trying to get the router to connect to a L2TP VPN server inside my datacenter, but seems to me like L2TP VPN client function is not supported inside the SRP 521w router.
Can Cisco implement L2TP VPN client into the firmware for the SRP 521w router in the future ?
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Aug 25, 2010
From what I have found the VPN (WS-IPSEC-3) port adapter (on a WS-SSC-600) is not supported if you decide to turn the 6509-E into a VSS system.
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Mar 10, 2008
I have configured MS CA and i setup vpn client and ASA 7.0 to make tunnel with certificates.Same configuration does not work with ASA 8.0 I get error
CRYPTO_PKI: Checking to see if an identical cert is
already in the database...
CRYPTO_PKI: looking for cert in handle=d4bb2888, digest=
b8 e5 74 97 f3 bf 25 1c 2e e5 21 3e d1 93 d6 15 | ..t...%...!>....
CRYPTO_PKI: Cert record not found, returning E_NOT_FOUND
CRYPTO_PKI: Cert not found in database.
[code]....
Why the key usage is invalid? What certificate template must be used in MS CA in order to get a regular key usage?
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Aug 25, 2011
I am currently having some problems on our 5520 ASAs. The problem is the IPSec VPN clients not being able to connect. We have had an issue twice this week where this happened. Earlier in the week we had folks not able to sign in, but some folks who were connected already stayed connected. The ASAs had been up for 200+ days and no changes have been made to it recently. At that point I had to reload the ASAs so users could start signing back in to it. Today we had a similar issue, but I didn’t have to reload the ASAs. The issue‘resolved’ itself. The VPN clients are getting Error code: 433 and the ASAs are getting Reason: Peer Address Changed when this occurs.
ASA5520, 2048 MB RAM, CPU Pentium 4 Celeron 2000 MHz version 8.3.2.
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Jan 28, 2013
We are configured the Remote IPSec VPN on cisco 1800 series router.The Clients are able to login to VPN and access the local corporate network Servers . But VPN Clients are not able to communicate with other VPN clients using their VPN Adapter IP.
Components used :
CISCO VPN Client 5.7
Router 1800 Series
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Oct 26, 2011
We have asa 5520 with 8.4(2) release and asdm 6.4(5). When we create new ipsec connection profiles (by ipsec wizard for example), ASA reset all vpnclients sessions active. Now we need to create new profiles, but we have 170 vpnclients sessions active, so we cant'.
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Mar 30, 2013
I've some strange problems with multiple ASA (NEM) VPN remote clients (v8.4.5). On the HQ I've an ASA5510 (v8.4.5) with multiple NEM's connected to it. The group policy used on the HQ is configured for split tunneling. Now here's the problem;
The remote ASA (NEM) constructs easily a VPN connection to the main location; it seems that everything works well. Traffic through most of the tunneled networks works perfectly. Traffic to certain subnets or hosts brings me into trouble, there is no traffic flowing through the tunnel at all!
When using the command "show crypto ipsec sa | i caps|ident|spi” I can see all of the tunneled subnets. The subnets that works perfecly gives me the correct "local and remote ident" output. The subnets with problems gives me wrong values in the "remote ident". The remote ident should be the IP address of the inside LAN (of the remote NEM) and not the IP address of the ouside interface (of the remote NEM). How is this posible?
Here's is the crypto ipsec sa output:
Result of the command: "show crypto ipsec sa | i caps|ident|spi"
local ident (addr/mask/prot/port): (10.200.60.0/255.255.255.0/0/0) <-- this is the good subnet of the inside interface (NEM)
remote ident (addr/mask/prot/port): (10.100.2.2/255.255.255.255/0/0) <-- this is the good subnet (HQ)
#pkts encaps: 54712, #pkts encrypt: 54712, #pkts digest: 54712
#pkts decaps: 31893, #pkts decrypt: 31893, #pkts verify: 31893
#PMTUs sent: 0, #PMTUs rcvd: 0, #decapsulated frgs needing reassembly: 0
current outbound spi: A4FA947A
[code]....
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Jun 30, 2011
I'm trying to understand my options for assigning addresses to VPN clients on an ASA 5510. Under the ASDM, I have a field for DHCP servers, radio buttons: none, dhcp link, dhcp subnet, and field: client address pools. Cisco's VPN examples demonstrate setting up a client address pool, which I did, but the VPN client isn't assigned a gateway in the process so it can't connect to anything; I really don't understand the point of this. I'd like to create a DHCP pool on the ASA for VPN clients as this seems to be the standard configuration. However, I don't know where in the ASDM to configure this and how it's applied. The only DHCP options I found involved creating a DHCP server on an interface, which I don't want to do since VPN users aren't on a physical interface, right?
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Dec 2, 2011
Can anyconnect clients and cisco vpn ikev1-2 clients use the same certificate on an ASA 5510 ?
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Mar 22, 2012
The title says VPN clients cannot access DMZ network, but that is not exactly the problem, the situation is this, a group of users are using an actual 10.x network where they have their servers and pretty much everything. The users must be relocated into a new network, the 172.16.x. In a point in time they will not have to use 10.x anymore, but meanwhile, they need access to that network.
I have an ASA 5510 as default gateway for the new network (172.16.x.x), one interface e0/0 connected to the outside (internet), interface e0/1 to the inside and other interface connected to the actual 10.x (which I call DMZ), so basically I am using the ASA as a bridge using NAT to grant access to the users in the network 172.16.x to the resources in the 10.x network while the migration is completed.
All the users must use the path to the internet thru the ASA using the NAT overload to the outside interface and I put in place a NAT policy to 10.x to allow access to the 10.x network only when the internal users 172.16.x try to reach that path and so far, everything is working just fine for the internal users.Now for some reason, when I do VPN, the VPN clients cannot reach the 10.x network, even when they are supposed to be in the internal network (because they are doing VPN right?) .
I have enabled split tunneling with NAT exempt the 172.16 network and I am not sure if that is causing the problem, because when I trace from my PC the 172.16.16.1 address using the VPN I get the proper route path, but when I try to reach 10.x, my PC is using its default gateway and not the VPN gateway which has a route to 10.x.
I’m not even sure if what I am trying to do is possible, I want VPN users to be able to access a 10.x network using NAT overload with the Interface of the ASA plugged to the 10.x network, just like the internal users are doing right now.
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Apr 18, 2012
Why do we need MP-BGP (and not BGP) to exchange multicast prefixes between multicast domains?
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Feb 19, 2013
I try to pass multicast traffic between two vrf on the same 3750 switch. I have IP services IOS and sdm template routing.
here is my config:
ip routing
!
ip vrf vpn2
rd 1:1
mdt default 232.1.1.1
route-target export 1:1
route-target import 1:1
[code]....
Now I'm stuck - I don't know what to do to pass multicast traffic. Do I have any chance to run this config on 3750 chassis?Perhaps "Configuring Multicast VPN Extranet Support" document will be useful, but it concerns Catalyst 6500? [URL]
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Jun 26, 2012
We have 30 remote workers which we have recently acquired which are being set up with the AnyConnect client to connect to our head end ASA 5510. For security purposes, we have to allow them access to only 3 of our local internal servers, all on our 10.10.X.X/16 subnet. The remotes are being issued a 10.10.50.X/24 address via DHCP on the ASA when connecting. I thought this would be as simple as creating an access list but have not had any luck doing so. In addition, we need to allow them full access to servers in a datacenter connected to our same head end ASA via a site-to-site VPN while they are connected to us using AnyConnect.
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Mar 21, 2012
We have remote VPN setup with Cisco ASA 5510. By using VPN filter, I can follow the guide and make client to use all necessary server services. (dns, ssh etc). However, is there any way that allow inside server access remote VPN client's services, ex. let inside server ssh to remote VPN client? Consider remote access VPN filter ACL's syntax, I have to always let source be the "remote VPN client PC", the dest is "inside firewall server", how can I let the other way traffice going?
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Mar 19, 2012
We have 30 remote workers which we have recently acquired which are being set up with the AnyConnect client to connect to our head end ASA 5510. For security purposes, we have to allow them access to only 3 of our local internal servers, all on our 10.10.X.X/16 subnet. The remotes are being issued a 10.10.50.X/24 address via DHCP on the ASA when connecting. I thought this would be as simple as creating an access list but have not had any luck doing so. In addition, we need to allow them full access to servers in a datacenter connected to our same head end ASA via a site-to-site VPN while they are connected to us using AnyConnect.
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Dec 12, 2011
I have 2 sites :
site A :
ASA 5510
VPN gateway for remote users
LAN 192.168.192.0/22
site B :
ASA 5505
LAN 192.168.208.0/22
Both sites are connected through a site to site VPN.Remote clients (AnyConnect/VPN client) can connect to Site A LAN and see machines on LAN A but cannot see Site B LAN.
Here is a part of my configuration :
On Site A (ASA 5510)
--------------------------------
name 192.168.192.0 SiteA_Internal_Network
name 192.168.208.0 SiteB_Internal_Network
name 192.168.133.0 VPNPool_AnyConnect
name 192.168.133.32 VPNPool_VpnClient
[code]....
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May 5, 2012
i have started managing a asa 5510 firewall which is already having 10 ipsec tunnels , the problem i am facing is they are configured as "ipsec vpn map"
i have attached sample config, i am finding it difficult to understand the parameters used in each tunnel as the configration seems bit complex to me, how it works .
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Sep 12, 2012
We have two ASA 5500 series Firewalls running 8.4(1). One in New York, another in Atlanta.They are configured identically for simple IPSecV1 remote access for clients. Authentication is performed by an Radius server local to each site.
There are multiple IPSec Site-to-Site tunnels on these ASA's as well but those are not affected by the issues we're having.First, let me start with the famous last words, NOTHING WAS CHANGED.
All of a sudden, we were getting reports of remote users to the Atlanta ASA timing out when trying to bring up the tunnel. They would get prompted for their ID/Password, then nothing until it times out.Sames users going to the NY ASA are fine.After extensive troubleshooting, here is what I've discovered. Remote clients will authenticate fine to the Atlanta Firewall ONLY IF THEY ARE USING A WIRED CONNECTION.
If they are using the wireless adapter for their client machine, they will get stuck trying to login to Atlanta.These same clients will get into the New York ASA with no problems using wired or wireless connections.Windows 7 clients use the Shrewsoft VPN client and Mac clients use the Cisco VPN client. They BOTH BEHAVE the same way and fail to connect to the Atlanta ASA if they use their wireless adapter to initiate the connection.
Using myself as an example.
1. On my home Win 7 laptop using wireless, I can connect to the NY ASA with no issues.
2. The same creditials USED to work for Atlanta as well but have now stopped working. I get stuck until it times out.
3. I run a wire from my laptop to the FiOS router, then try again using the same credentials to Atlanta and I get RIGHT IN.
This makes absolutely no sense to me. Why would the far end of the cloud care if I have a wired or wireless network adapter? I should just be an IP address right? Again, this is beyond my scope of knowledge.We've rebuilt and moved the Radius server to another host in Atlanta in our attempts to troubleshoot to no avail. We've also rebooted the Atlanta Firewall and nothing changed.
We've tried all sorts of remote client combinations. Wireless Internet access points from different carriers (Clear, Verizon, Sprint) all exhibit the same behavior. Once I plug the laptops into a wired connection, BAM, they work connecting to Atlanta. The New York ASA is fine for wired and wireless connections. Same with some other remote office locations that we have.
Below I've detailed the syslog sequence on the Atlanta ASA for both a working wired remote connection and a failed wireless connection. At first we thought the AAA/Radius server was rejecting us but is shows the same reject message for the working connection. Again, both MAC and Windows clients show the same sequence.Where the connection fails is the "IKE Phase 1" process.
-------------------------------------------------------------------------------------------------------------------------
WORKING CONNECTION
-------------------------------------------------------------------------------------------------------------------------
%ASA-6-713172: Automatic NAT Detection Status: Remote end is|is not behind a NAT device This end is|is not behind a NAT device
NAT-Traversal auto-detected NAT.
%ASA-6-113004: AAA user aaa_type Successful: server = server_IP_address, User = user
%ASA-6-113005: AAA user authentication Rejected: reason = string: server = server_IP_address, User = user
[code]...
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Mar 10, 2011
I need to create a IPSec Site-Site VPN in the Single mode firewall. Is it possible to create the tunnel. I have ASA 5510 Security Plus with Ver 8.3
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May 12, 2011
We're in the process of setting up an ASA 5510 as our main VPN appliance.
The Outside interface of the 5510 faces our DMZ, the Inside interface sits on our main network. The 5510 uses radius for authentication going to a server on the same subnet for the authentication. That works fine. VPN client can connect to the 5510 and successfully authenticate. Routes are pass through to the VPN client, no problem. PC with VPN client can access internet (which is by design, it should use it's own internet connection), but cannot ping/access/trace over the tunnel at all.
My hunch is that this is a nat issue - but I am confused as to how the NAT should be configured - I've tried several configurations with no luck.
The VPN client is set to pull an ip address from the pool - 192.168.56.10 - 100. The 5510 is sitting on a separate subnet (50.x/22). This seems to work on the Cisco 1700 that it will be replacing just fine. I mirrored routes and ACLs as well onto the new 5510. No luck. Client connects, authenticates, pulls an IP address and routes, but can't see anything on the inside of the 5510.
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