I'm running a IPSec VPN between a 5520 ASA and a 2811 router. The ASA has a static IP and the router has a DHCP interface.The VPN seems to work fine once I get done clearing old SAs, but each new IPSEC SA creates a new ISAKMP SA on the router? There are multiple subnets that need to create multiple IPSEC SAs. Eventually I can clear the older ISAKMP SAs and get all the traffic on one ISAKMP SA, but until I clear older SAs, new associations won't form. Why the router (initiator) would keep creating new ISAKMP SAs and not use an established one? Using PSK, aggressive mode and no PFS. ASA has another dynamic crypto map with lower priority than this one. Using FQDN for identity on the router. ASA version 8.2(5) and IOS is 12.4(20)T1.
Must be something I'm not understanding. The ASA says no established SA and drops the new SA attempt until I clear older ISAKMP SAs out of the router. Interesting, the first few IPSec SAs form when the tunnel initially comes up. I assume the initial requests are getting cached and work immediately after the first ISAKMP SA forms, but subsequent IPSec SA attempts will fail. Once all subnets are talking with 1 ISAKMP SA, rekeys don't cause any problems. Since the router subnets have to instantiate the new IPSec SAs, this is a real pain to go through anytime the WAN/VPN fails.
i repalced old cisco router 2811 with new one 2921 , all works except crypto map VPNs routers can ping each other , ACLs are not applied to outbound interfaces show crypto isakmp sa is empty after i make same configuration on a new router 2921 config crypto isakmp policy 10
keys match , crypto isakmp policy is same , IOSs supoort VPN .interess traffic alse been initiated from both side and all worker in old cisco router with same configuration?
I'm trying to set up a network for a friends small office so we can share files between each of the computers.i have tried to do it through the workgroup but with no luck as some can see the other machines and some cant?
Hardware/software:
Thompson wireless Router laptop with Windows 7 laptop with Windows Vista laptop with Windows XP SP2 Mac
I have set the network discovery to on in W7 & Vista and and ran the network wizard in XP At the moment the vista and W7 machine can see each other but i get and error saying cannot access //(computer name)with the W7 and XP machines i can send a file when i type in the ip address (//192.168.1.?) into the W7 search bar but the XP computer is not shown in the network folder?
I am trying to configure a Cisco 871 router.I have 3 servers on my network that need static public IPs but also still need to communicate on the local network.
I have given my WAN interface the first IP in the block and set up PAT for the rest of the computers on the network which is working fine. Next I set up static NAT rules for the servers translating 3 of the remaining public IPs to the internal addresses of the servers.
I can access those servers internally using the public IPs but not from outside the network. A tracroute from outside the network gets dropped when it gets to my ISP.
I've never configured more than one static ip for a network before and i know i've just missed a step here. Do I also need to set up static routes? Will that update the next hop's routing table?
I 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?
Our company has recently upgraded our firewall from a Borderware Steelgate v7.1 platform to a Cisco ASA 5520 platform. Needless to say the interface on the Cisco platform is much more complex and I don't have much experience working with firewalls. Our other IT guy is out of town and this is the first time I have worked on this setup.
I need to create the following access rule
I need to open port 4**0 to be allowed through the firewall from external ip address 10.XXX.XX.XXX only. Then forward port 4**0 to 10.XX.XX.XX port 80 tcp
I'm having a problem with the memory and also trying to create some rules on the CISCO ASA. The version that I got installed was the 8.2.5.33 on a CISCO 5520 with 512 RAM, the memory usage is on 99% used, 1% free and because of that when I'm trying to create a new rule the firewall brings me the next error..So what I did was a downgrade to the version 8.2 (4) 4 and the memory went down a little (82% used, 18% free) but I still got the error when I'm creating an access rule on the device. One thing and I'm not sure if this could affect on the performance are the number of access list and the object groups that are created.
I already open a case with CISCO TAC and they are checking if the problem is with the memory capacity or maybe a memory leak.Also the doubt that I got is with the memory that I got now available should I can create access rules or 82 is still to hig to create a rule or and object group?
I have faced configuration of multiple nat/pat problem.Point is when I paste into router another nat pool or nat with route-map or just static nat they doesn't work I mean only one of them works.So, I have several connection hardware cisco 2811 latest ios 15.1
1. internet 2. Local host that must be translated into global local ip addresses be routed 3. vpn local hosts that must be translated into local global addres
actually im using a cisco asa 5520 as a default gateway to acessin/ publishing in the wan. i have a cisco 2811 configured to replace the cisco asa in a case of problem, but the switch is made manually. my lan switch is a 2 3560e configured with hsrp, so it is possible to make redendancy( failover) between the cisco ASA 5520 and the cisco 2811 using a hsrp or other technic.
My company recently failed a PCI scan because our router was returning 56bit des encryption for isakmp negotiation on an existing default isakmp policy. How do I remove this default isakmp policy. I am not running 12.4(15)T1 so the no crypto isakmp policy default does not work. Is there any way other than upgrading the IOS?
Is there any way to configure a maximum number of isakmp policies that an authenticating router will check? I have 2 configured higher priority ISAKMP policies. Maybe if there is a command to limit the number of isakmp policies the router checks, that would eliminate this default policy being matched?
We have 2 Cisco ASA 5520 configured as Active/Standby with public IPs 68.171.xxx.xx6 and 68.171.xxx.xx7 respectively.We have 3 different vendors who are trying to access our Data Center. Do I have to have 3 different public IPs for these 3 different vendors? Or, just share the public IPs assigned to our 'Outside' interface?
I have ASA 5520 with Ver 8.2.Outside interface is directly connected to ISP's router(TelePacific) and is assigned one of public IP:198.24.210.226.There are two servers inside the network with the private IP's:192.168.1.20 for DB Server, and 192.168.1.91 for Web Server.I did Static NAT 198.24.210.226 to 192.168.1.20 and 198.24.210.227 to 192.168.1.91.When I access DB Server(198.24.210.226) it's working OK but when I access Web Server(198.24.210.227) there is no response at all.I checked the inside traffic, it even did not get into the firewall.Is this the problem with ISP's router? How can we route all of our public IP's to the outside interface(198.24.210.226)?
I have ASA 5520 with Version 8.2(5), the ISP give me a block of IP pubic (201.148.156.193/28), one IP valid (201.148.156.194) have the Global NAT (all users LAN) and server FTP, but i need that IP 201.148.156.195 is used for VCSe, and the IP 201.148.156.196 is used for other server FTP.
My basic question is, does Cisco VPN Client allow two simultaneous VPN connections at once?I want to set up the following:User Client (Remote Access VPN via Internet)--> Head Office ASA 5520 A/S Pair --> (Remote Acces VPN via Internet) --> Branch Office ASA 5510S+ A/S Pair,So, in order to access the branch office system, the user must:Connect to Head Office ASA peer via Cisco VPN Client (user/password authentication),Head Office ASA peer gives a private 172.16.1.x IP, and is configured to route all requests to Branch Office's public ASA IP via it's own public IP address. Once Head Office VPN established, user establishes a SECOND VPN tunnel from Cisco VPN client (user/password and cert-based auth).
Currently in our environment we have have two buildings with an ASA 5520 in each and a core stack of 3750's in each building. I am currently working on a network segmentation project and am thinking of adding another stack of 3750's in each building to add more redundancy to our network. This will allow our access layer switches to have a trunk to each stack and prevent an outage if one of the links or stacks were to go down.
My question is how I would set this up on the ASA end of things while using a common subnet and HSRP on the 3750's. I understand how to use HSRP and STP on the switches to achieve this on the 3750 end of things. I saw you can do etherchannel on the ASA with 8.4 but how does that work in a failover situation?
Got an ASA5520 running V8.2(3) and we want to upgrade our internet bandwidth. Our ISP says OK but we need to install different physical circuit, upgrade CPE router, etc.
Then they say, btw your globally allocated IPs will change - this is a problem as we have Site-to-Site VPN Tunnels, IPSEC RA, etc.
ISP are proposing to give us a 3 month period whereby old & new IP blocks will be routed to our ASA (by means of secondary IP address on their Cisco CPE).
Multiple IPs on the same physical i/f on the ASA require sub-interfaces/IP Addresses/VLAN ids on my "outside" i/f.
Is this going to horiibly break Site-to-Site VPN Tunnesl, IPSEC remote access ?
Will VLANs work at all with IPSEC on the "oustide" i/f at all ?
I need to configure multiple context mode with active/standby failover solution.
Even after reading some Cisco documents I still can't understand if active/standby failover configuration has to be done within the admin context only or also within every single context (context-1, context-2 for example). In this case I have to allocate as failover interface a subinterface for each context (admin, context-1, context-2), right ?
Therefore a I have an other question: within the admin context, in a failover solution, do I have to allocate all interfaces I want to be moniotred, even though some will be used by context-1 only context and some others will be used by context-2 only context ?
An other question is: if active/standby failover configuration has to be done within each context, can I set regular failover within context-1 while stateful failover within context-2 ?
The last question is: can I use management interface within all 3 contexts ?
I have a home office with multiple VLANS/subnets I have many VPNs that connect only a specific subnet to a specific remote offfice. On a 5520, can I create a S2S VPN to different remote offices that have the same IP scheme, but from different home office subnets? For example at my home office let's say I have two independant, distinct VLAN/subnets: 192.168.140.0/24 and 192.168.150.0/24. Can I create an S2S from the 140 subnet to a remote office with a 10.10.10.0 addressing scheme and another S2S from the 150 subnet to a totally different office also with a 10.10.10.0 scheme?
I have to connect one of our it labors with some ec2 instances in amazon vpc. I downloaded a configuration file from amazon which starts with the command
crypto isakmp policy 200
My router tells me that he does not know crypto isakmp.
I searched on the internet and found that i have to install a specific license, but unfortunately i cannot find which license i have to install.
The show license command show following licenses
AdvIpServices active AdvSecurity active advsecurity_npe, ios-ips-update, waas_Express no state displayed ssl_vpn active but eula not accepted
I found that i can accept the eula license with license boot module c880-data technology-package SSL_VPN command
But this command is also not available on my device. getting the crypto isakmp command working?
Is 3DES on ISAKMP considered to be secured for your average site (other options are AES/DES)? I'd imagine AES should be much stronger but what about DES, is that considered adequate or broken? Is there any proof of concept attack against 3DES on ISAKMP (or ISAKMP in general)?
I have a Cisco 881 ISR (CISCO881-SEC-K9) and have the advanced security license installed and enabled/active and in use (see screenshot). However, the isakmp crypto module is not available.
I'm currently dealing with a weird problem on a Cisco RVS4000. I'm trying to connect to a IPSEC VPN Gateway (NETASQ) located on the LAN side of the RVS4000. I'm using Green bow vpn client on the WAN side of the RVS4000. Basically I'm trying to get through the RVS.My VPN config is OK because i tested it on the LAN side of the RVS.
The RVS is configured like this: NO VPN configured. Block WAN Request :OFF FIREWALL,IPS,DDOS are OFF
NAT forwarding on for UDP 500 and 4500 directed from the wan to the ip of the VPN gateway. Seems right because iv managed to do this with other routers (different brands) on another site.I've wire sharked my vpn client and i keep getting ICMP destination unreachable (PORT UNREACHABLE) after my ISAKMP launching packet.Can the RVS nat these ports ?
cisco 878 configured to accept client vpn requests. From client prospective people get error 412 and they can't connect. Not sure what s wrong, following configuration and debug isakmp. Autentication is through a radius server.
I need to be sure that when traffic matches access-list "NAME_40_cryptomap" Isakmp policy 50 are used. And then traffic matches "NAME_20_cryptomap" isakmp policy 10 are used. How do i link the crypto map with the specefic isakmp policy?
I upgraded my Cisco asa from 7.2 to 8.4 system image. Now the old style syntax isakmp policy is not working anymore and I am not able to write a isakmp policy to being used for remote access VPN.
on many examples on Cisco site I have seen that it is always used Cisco any connect client installed on ASA. this means that the old configuration compatible with Cisco vpn client IPSEC is no more usable ? or what kind of syntax I have to use to configure remote access VPN ? for example these commands are not working anymore.
I have a couple of clients which are using the 3g modem to connect to ASA.The channel was sometimes "noisy" and therefore ipsec isakmp is doesn't work.Client losts vpn connection ,but on asa i can see it as connected(connection was in "freeze" state).
Just looking at a new clients setup and they have a ISAKMP vpn to the old security company I am trying to remove...I am fairly new to cisco, I actually know how to setup the ISAKMP policies, acl's etc but never had to completely remove one before All I can find is Clear Commands which seem to just flush the config not actually delete any of the policy etc...Its not that urgent as all passwords are changed on the domain and the cisco, the usernames have been deleted as well.
#show crypto isakmp peers Peer: ** Port: 500 Local: ** Phase1 id: ** #show crypto isakmp policy Global IKE policy
We have a PIX firewall 515E running version 6.3(4) and there are few site to site VPN's installed on it. We want to find out the isakmp key for those VPN tunnels. On ASA, We can run the command "more system..." and it displays the key, but it seems it doesn't work on the PIX 515E.
I am currently experiencing an issue with an IPSEC Tunnel between a Cisco892-K9 (c890-universalk9-mz.124-22.YB.bin / Feature: advipservices) and a Checkpoint VSX R67.
After reloading the router the tunnel is stable, but afterwards we loose the connection to the LAN unexpectidly (max. time of the connexion is ~2h30).
In fact after a reload the first ISAKMP SA is well negotiated with conn-id 2001 and after a certain amout of time the connexion is lost always associated with this debug message =>
ISAKMP:(2001):error from epa_ikmp_gen_ipsec (QM_IDLE ) ISAKMP:(2001):Unable to generate IPsec key for 799280698! ISAKMP:(2001):deleting SA reason "Death by retransmission P2" state (I) QM_IDLE (peer 194.X.X.X) and so on ....
We supposed it was related to DPD messages so we deactivated the keepalive (no crypto isakp keepalive). We tried to play also with the ACL matching the crypto map (currently from local subnets to any), but still no luck.
When it is stable the ‘show crypto isakmp sa’ indicates a isakmp sa ‘QM_IDLE / ACTIVE), and when the problem occurs the active ISAKMP SA is deleted and recreated (in ACTIVE state) continuously : conn-id 2001, 2002, 2003, 2004 etc...…but still no access to the LAN.
My main question is to know if someone has already know the signification of the previous ISAKMP debug messages (along with the total debug message + crypto conf from the beginning of the problem) =>May it be a platform support (near 200 ipsec flow in use => most subnet to subnet flow, few subnet to host flows- 200 users on site) , compatiblity, crypto map acl …???
I am trying to set up a site to site VPN tunnel using GRE over IPSEC. Below is the configuration from both routers and debug output. I'm scratching my head on this one. I'm using two Cisco 7600 routers with SSC-400 SPA modules and 720 Supervisors. The IOS on R1 is 12.2 SXI2 and R2 has 12.2 SXI3.
I have setup ipsec VPN in my C2811 router but when "show crypto isakmp/ipsec sa" shows nothing. Remote end point is an "ASA5520". Does it indicates that the remote ASA5520 not yet configured?
