Cisco WAN :: C800 / Aggressive Mode Tunnel On ASA5505?
Jun 13, 2011
Currently, I have in a number of remote sites (with dynamic public address) a C800.On this Cisco, I have a config for initiating an agressive-mode tunnel to a central ASA.relevant part of the config:
---
crypto isakmp policy 10
encr aes
authentication pre-share
group 2
!
crypto isakmp peer address 1.2.3.4
[code].....
Now I need to replace these C800 by ASA5505. But I don't know how to replace the "crypto isakmp peer address" command in ASA.The C800 transmits both the password (abcdefg in my example) and the fqdn (remotesite1 in the example). how to configure the ASA to build the tunnel the way the C800 did?
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Jan 8, 2013
I have Cisco ASR 1002, code XE 3.4.1 doing site-2-site VPN with an ASA managed by another company that I have no control over running 8.3 (I think).the site-2-site vpn is very easy straight forward as follows.
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Jan 16, 2013
Need the clarity on IKE version 1 with aggressive mode, I assume this is used for remote site VPN and not for site to site VPN.
Correct me I am wrong and also share the inputs on this.
Also required the inputs for disabling in Cisco 3800 series router.
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May 18, 2012
I've found an issue with my SRP527W that is prohibiting me setting up a useful site to site VPN. In short, the "Enable ID: Default/Manual" option in the IKE policy screen does not seem to behave as advertised. Not matter what it's set to the remote end always ends up receiving the IP address of the DSL interface as its peer id.
The scenario is an SRP527W with a dynamically assigned DSL IP address connecting to a Netscreen SSG5 on a static IP. I have confirmed that:
- A Main Mode VPN works (but is no use on an ongoing basis due to the dynamic IP)
- An aggressive mode VPN works if the Netscreen has its peer ID set to the public IP of the SRP (....same dynamic IP issue)
However if I try to set a manual Remote ID in the SRP IKE Policy it does not get sent as part of the phase 1 negotiations. Debug logs on the Netscreen shows that it receives the DSL public IP no matter what.
Dumping the router config to XML [URL] shows no sign of the IP address that has been set via the interface (despite the setting visibly staying set in the interface). The rest of the VPN config shows up there.
Current firmware version: 1.01.26 (003)
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Jun 6, 2011
I am trying to diable aggressive mode, for security reasons. I have a Cisco 3825 running c3825-advsecurityk9-mz.124-24.T2.bin. When I disable aggressive mode with ROUTER(config)#crypto isakmp aggressive-mode disable , I am unable to connect. The syslog message displayed is > %CRYPTO-5-IKMP_AG_MODE_DISABLED: Unable to initiate or respond to Aggressive Mode while disabled and the client error is Reason 412: The remote peer is no longer responding.
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Dec 28, 2011
you can configure a cisco 1905 router with vpn ipsec site-to-site in an aggressive mode? If so, any link to what I do? The VPN works well, but on site A, I had to configure a crypto map associating the IP address for site B (wich is dynamic), so if the connection on site B broken, I will have to configure another crypto map.
The scenario is:
Site A - ASA 5510 configured as a VPN concentrator and firewall for enterprise.
Site B - Cisco 1905 connected to Internet through a ADSL through a dynamic IP address and starting connection to Site A, bellow is the configuration:
crypto isakmp policy 10
encr 3des
hash md5
authentication pre-share
group 2
crypto isakmp key xxxxxxxxxxxx address W.X.Y.Z
[code]....
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Jul 1, 2012
We have an ASA5515 at HQ and multiple sites with ASA5505 units. All of these units are connected via site to site VPN in mm. They also have static ip's.mwe have two sites that we are currently attempting to connect back to HQ in aggressive mode but are unsuccessful.
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Sep 23, 2012
I'm in process of purchasing a new Cisco routers for our branches that will be used primary to enable IPSec virtual tunnel interfce with "tunnel mode ipsec ipv4". does the default IOS IP Base supports this feature? or i need to purchase DATA license or SECURITY license?
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Apr 23, 2012
I am trying to connect a cisco 800 series router using adsl to a bt router/hub. This didn't work at all - so the cisco router is now connected to the bt router using a switch and the adsl cable. When I connect my pc to the cisco router, it doesn't go on the subnet it's supposed to be on. it's set to the gateway on the cisco router and the pc is set to 192.168.3.252. The bt router is on 192.168.1.x. When I connect a pc to the cisco router, and assign an ip address e.g. 192.168.3.123 it doesn't have any internet connectivity, but when I set it to get the ip automatically, it gets the ip address.
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Nov 10, 2011
I have two ASA 5505 on two different locations(main office and remote office) and I need the remote office to be in the same subnet as the main office since they move computers betweend the offices and they have fixed IP addresses on those computers and they have no right to cahnge to dhcp mode when they move to remore office. Is it possible to create like a bridge over the VPN tunnel so it extens the LAN ?
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May 9, 2013
We have a HUB ASA5505 SEC+ with a few other ASA's connected to it via L2L VPN. We have 1 active Static L2L, 1 Active Dynamic L2L, and I'm currently trying to add a Second Static L2L Tunnel.I verified that each WAN Interface can ping each other, and both devices have full internet connectivity. There is no double nat or content filtering going on either. I did notice that my Cisco Remote Access VPN Client won't connect properly through the ASA despite full internet connectivity, but when I connect directly to the modem I was able to connect properly. So apparently the ISP isn't blocking IPSEC traffic AFAIK.
Static2 is currently using a Temporary TAC License since our license is currently awaiting arrival, but a show version output shows that all VPN/3des features are enabled. [code]
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Nov 27, 2011
I have set up an ipsec tunnel between a Cisco ASA 5505 and a Fortigate 80c. The tunnel is set up as I execute pings from inside behind ASA to inside behind FG, however I cannot get connectivity to hosts behind the Fortigate (traffic is allowed through policies configured on the FG). What I noticed in packet tracer is that traffic is dropped at the step 'Vpn lookup' To troubleshoot I have configured a test ('fake') vpn connection through the vpn wizard and get the same result in packet tracer. I run 8.4 software on the ASA and this is part of the relevant config.
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Feb 14, 2011
Got a problem routing trafic to my L2L tunnel...
Got an ASA5505 Sec+ with ip 10.45.10.1 on inside interface. Firmware 8.3(1). Got another Cisco router (From my ISP) with ip 10.45.10.254 - This one creates an L2L tunnel - To the 10.45.20.0/24 net.
On the 5505 ive got "route inside 10.45.20.0 255.255.255.0 10.45.10.254 1", and trafic is being directed to 10.45.10.254 as it should.
I know cause I can ping everything one the 10.45.20.0/24 net - But thats it... Cant RDP, connect to fileshare... Nothing.
When i test a PC and set it to gateway 10.45.10.254 I can access everything on the remote network. Do I need some NAT command or an access-list? I've setup AnyConnect VPN on the ASA and I can connect to both networks without any problems.
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Aug 9, 2012
I'm having trouble configuring an ASA5505 on version 8.31 code for an IPSec tunnel. I've done this multiple times on 8.2.5 but can't seem to get my tunnel to even attempt to come up on this ASA. Not sure if it's relevent or not, but this remote ASA has never been used for another VPN tunnel before. When I attempt to ping a host on the other side of my tunnel, I just see the following: 8108# sho crypto isa sa
There are no isakmp sas
My local network is 10.1.1.X/24 and my remote peer network contains 66.37.227.X/24. I've been working on this for the better part of the day and would love to get it resolved.
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May 20, 2012
I have a number of sites in China, they have decent inter-country connectivity but poor connectivity when going overseas.
We have a single site in China witha dedicated 1:1 leased line that has good conectivity both inside and outside of China.
All the sites in China have ASA5505 firewalls
One of our Citrix farms is hosted in the UK and although the main site with the leased line is fine accessing the farm the other sites are not. I would like to try and tunnel just the citrix connectivity via a VPN to the China head office then use their connection to get out to the farm.
how to tunnel all traffic but not just specific traffic over the VPN.
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Feb 20, 2008
Just bought myself an ASA5505 to replace a PIX 501, and having transferred over most of the previous config I've managed to get the two IPSEC VPN tunnels working as before.
Unfortunately when I try and SSH to the ASA the connection just resets instantly even when the tunnel is up. It seems as if the ASA is actively refusing the connection, though the log doesn't state this. I had always presumed that traffic over an established IPSEC tunnel was implicitly trusted and not subject to usual access-list rules.
I am unable to SSH to the ASA from the 10.0.0.x range, but I can SSH to a machine on 10.27.0.4 (so I know the tunnel is up and working)
Config (minus irrelevant sensitive information) is attached for reference.
Also - though I'm not sure how relevant it is given the tunnels appear to work - when I enter the line "crypto map meepnet-map interface outside" in config mode the ASA reports "WARNING: The crypto map entry is incomplete!" even though I have supplied the access-list, peer and transform-set variables.
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Jan 21, 2013
I just joined this company and they already ad a VPN to one of their partners that provides them access to some resources. We have now added a 2nd location but the partner wouldnt allow a 2nd VPN tunnel so the decision was made to give the new location a ASA5505 to tunnel thru the main office to access the resources at the partners site.Using ASDM i believe i was able to setup the tunnel to the main office but there is no resource there to use. Now i'm stuck and i do not know what to do to get to the partner site
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Oct 6, 2011
I have an ASA 5505 with Base license and a vpn client. The scenario is like this: LAN -- ASA 5505 -- ISP DSL Router---( Internet ) -- Home DSL Router --- LAN -- VPN CLient, The ISP DSL Router gets a public IP address and the ASA gets a private IP address (ISP DSL router doing NAT) and I cant reach the internet with no problem from the LAN´s ASA side but I cant make the vpn tunnel connection from the LAN´s Home side so I told the provider to bridge the ISP DSL Router, to the ASA so the ASA could get the public IP but in order to do that the provider told me to do MAC clonning on the ASA 5505 which I did putting the ISP DSL Router MAC on the ASA. Now the ASA gets the public IP on the outside vlan by DHCP but when I try to make the VPN tunnel I just cannt. I can reach the public IP by ping on the ASA and I can see the pings coming in using debug but I just cant make the vpn client work.
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May 28, 2011
inside network----ASA5505========internet===========Remote VPN client.
The ASA has one public IP on its outside interface and using PAT to the internet. It only has two interfaces, inside and outside using vlan. I created a IPSec VPN through CLI. My goal is for the remote client to browse the Internet throught tunnel.
Q1: Is it possible?
Q2: The remote side gets connected and has IP from the pool, with is part of inside network. But it cannot ping anything, including the gateway, which is the inside interface. I debug it, it shows the ASA receives the ping packages, but it doesnt send anything back to the client.
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Feb 6, 2012
On remote site I have Cisco ASA5505, on cental site I have Cisco 2811 router, working site-to-site VPN tunnel. [code]
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Feb 5, 2013
New to Cisco but learning some. Needing to know what I should code into CLI on my ASA5505 to make it work with comcast modem which uses DHCP for it's addressing from Comcast proper.
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Aug 1, 2011
Is it possible to configure bridge mode in asa 5505 if it is can u provide me a config.
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Sep 22, 2010
I've ended up in rommon mode on my new"old" RMA'ed ASA5505, and I'm stuck there, I'v tried to erase Disk0 and all that, and tftp'ed a new image into the box, but when booting I get the message :
INFO: Unable to read firewall mode from flash
WARNING: Unable to write firewall mode to flash, this is normal if flash is not formatted
Running Activation Key: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
This activattion key is invalid, use default settings only
i2c_write_byte_w_suspend() error, slot = 0x0, device = 0x40, address = 26 byte count =1. Reason: I2C_UNPOPULATED_ERROR
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Feb 19, 2013
I have a cisco ASA5505 configured in transparent mode. This evening we attempted to plug a couple of new servers in but they simply didnt work, despite our test server working absolutely fine. The server IP's are all in a network object group (the same as the test server) and they're all using the same ACLs etc. I'm relatively new to configuring cisco equipment.
the only thing I can think of is a static route I had to add to get the managemet IP to work might be causing problems.route outside 0.0.0.0 0.0.0.0 XX.XXX.132.1 1(IP addresses obfuscated- servers are all in the same range so assume XX.XXX is the same across all IP's).
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May 13, 2011
I find it hard to understand tunnel and transport mode, the differences between them, and NAT. Ok so I have this scenario: Site2site VPN with 2 Cisco routers.
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Oct 10, 2012
I'm able to build my tunnel but unable to RDP nor ICMP back to the internal network.
VPN Client IP: 192.168.200.200
INTERNAL IP: 172.17.130.200
my configuration is below:
HOME-ASAFW02(config)# wr t: Saved:ASA Version 8.4(4)!hostname HOME-ASAFW02domain-name hsd1.nj.comcast.netenable password ViPq56cvd3SGvB08 encryptedpasswd 8bcozHCAwCqA5BmN encryptednames!interface Ethernet0/0description OUTSIDE-Connectionswitchport access vlan 2switchport protected!interface Ethernet0/1description INSIDE-Connectionswitchport protectedspeed 100duplex full!interface Ethernet0/2description WiFi-LinkSYSswitchport access vlan 3switchport protected!interface Ethernet0/3shutdown!interface Ethernet0/4shutdown!interface Ethernet0/5shutdown!interface Ethernet0/6shutdown!interface Ethernet0/7shutdown!interface Vlan1description INTERNAL-Networknameif insidesecurity-level 100ip address 172.17.130.129 255.255.255.128!interface Vlan2description OUTSIDE-Link-to-ISPnameif
[code]....
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Sep 19, 2011
I am trying to implement RBSCP on two 3845s running 15.1(4)M1 Adv Enterprise over a satellite link. The "show" commands all look correct, but whenever I policy route my machine through the RBSCP tunnel I dont even make it to the opposite side. However, if I remove the "tunnel mode RBSCP" command so it acts like a regular GRE tunnel, I route through it just fine. So I know its not a NAT, routing issue. [code]
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Feb 10, 2011
My remote VPN device (static IP address) is setup to connect on the ASA5520 DMZ interface.
Peers performing L2L IPsec VPN with pre-shared keys sync-up regardless of which identity mode selected. If I set the router to “crypto isakmp identity address” or “crypto isakmp identity hostname” the ASA still accepts the connection. Also tunnel mode on initiator (router) is set to “TRANSPORT” but negotiates to TUNNEL mode with ASA.
I am able to successfully ping and telnet from a remote device through the router -- ASA5520 VPN tunnel into the HQ hosts so I can see communication is working.Initial ISAKMP negotiation debugs on router (below) shows the differences but the ASA accepts anyway.
-ASA5520 8.0(4) running in router mode
-ASA should only answer, never initiate VPN sessions
-Cisco 2800 router IOS 12.4 Adv Security should always initiate the VPN session.
-Cisco 2800 router does not have option of key-id, only address, hostname and dn.
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May 3, 2011
i have one asa 5505 that have classic remote access vpn set-up and now i need to add site-to-site tunnel on top of the existing configuration. Is that possible with asa 5505 and do i need some special IOS bundle for that? May i use vpn wizard for that or do i need to go through cli since remote access vpn is setup using wizard.
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Oct 6, 2012
I have configured Site to site and the VPN tunnel is up. But the ACL's are not working.
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Aug 20, 2012
we're running 4 c4500 Switches at 2 sites connected to each other via Layer-2 crypto boxes and VPLS in a point-to-multipoint configuration which ist completely transparent (it's more or less like connecting them via a Hub - every switch sees the other 3 ones as neighbors). Our basic configs have udld globally enabled in aggressive mode. I wanted to disable that for the interfaces (routed ports) to the crypto boxes, because I don't want them in ErrDisabled for 5 minutes if there are connectivity problems in the VPLS-cloud (every switch also had 3 UDLD neighbors because of the P2MP configuration). In if-config mode I could do this simply with "udld port disable", but I thougt it would be better to run normal mode (not aggressive) to have the chance to use the UDLD show-commands. So I configured "udld port" for the affected interfaces.
interface GigabitEthernet1/2
udld port
!
[Code].....
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Jan 9, 2011
i have a 7201 router with NPE-G2. i have a design which i have the option to send all the traffic through a GRE tunnel or a L2TPV3 tunnel.which method is more CPU consumption ?
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Oct 17, 2012
I am using a Cisco RV110W (Firmware 1.2.09) in a branch and I would like to create a VPN Tunnel to another site that has a Cisco RV042 (firmware v4.2.1.02)
What would be the correct Configuration? the current configuration I am using is
in the RV042 i am using
Check Enable
Local Group Setup
Local Security Gateway Type : IP Only
IP Address : RV042 Pulbic IP address
[Code].....
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