Cisco VPN :: ASA 5505 IPSec SA Limit?
May 2, 2012
I am trying to replace a 1751 IPSec VPN that connects a single LAN behind the 1751 to ~45 remote networks behind a single peer. There are a small number of workstations (~50) and low throughput (< 1MBps) across this VPN, the biggest trouble is the number of remote networks needed.
I have tried to connect an ASA5505 Security Plus in place of the 1751 and am able to get Phase 1 and Phase 2 up, except I don't get all of my ipsec sa's and can only pass traffic to some of the remote networks. Does the 25 IPSec limit apply to multiple sa's one one peer, I've only ever seen it spoken of as a 25 peer limit?
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Nov 16, 2010
Any actual limit on the number of IPSEC SAs that can be negotiated on the crypto module of a 3900 series G2 router? When I issue the command on a 2900 G2,This implies the 2900 series can handle 1800 IPSEC tunnels with an SA used for each direction. All of the documentation and support requests have stated that the crypto module is better than the AIM module in the older series routers but I have been unable to get a concrete answer to the limit.
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Nov 22, 2012
Is there anyway to limit a user's traffic volume on ASA8.4? if there is, how?
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May 18, 2011
I have a hub and spoke network with over 100 remote sites that connect to me via ipsec vpn. One of these locations, the only one using FIOS coincidently, is initiating 200+ tunnels back to my side which is causing saturation issues on my DS3. (I can post config if requested), and how can I limit the number of active tunnels it's establishing?
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Aug 18, 2011
I am using ASA 5505 cisco firewall as a transparent firewall. I have assigned ethernet 0/0 as outside interface and ethernet0/1-7 as inside interface. There are 3 departments in office. So, i connected ethernet 0/1 to Dept A, ethernet 0/2 to Dept B and ethernet 0/3 to Dept C. Now, I want to limit bandwidth to each department, e.g, 1 Mbps download/upload to Dept A, 512 kbps download/upload to Dept B and 512 kbps download/upload to Dept C. So, how can i do this in ASA 5505.?
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Nov 27, 2011
Hit my 10 license limit on my 5505 and am trying out how to clear the cache so my main machines can get online.
I connected some VMs to the internet so i could download updates and now im stuck.
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Sep 11, 2011
I have the default license for a ASA 5505 and this last Friday I received the attached log for SSH sessions through this firewall; we want to be clear about this issue. This limitation has to be with the 10 Inside Host or the Total VPN Peers limitations in this license? This firewall exists only to agree with a PCI requirement between our router and a communication with a Payment Card Industry Brand, all of this in the same site.
ASA5505 <164>Sep 09 2011 10:42:08: %ASA-4-450001: Deny traffic for protocol 6 src DMZ:X.X.X.X/2479 dst DMZ1:X.X.X.X/22, licensed host limit of 10 exceeded.
I hope that the communications through 22 TCP port, are not countable for license propose.
Licensed features for this platform:
Maximum Physical Interfaces : 8
VLANs : 3, DMZ Restricted
Inside Hosts : 10
Failover : Disabled
VPN-DES : Enabled
[code]....
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Feb 26, 2013
I updated an ASA 5505 to 50 users, but I still can only connect 10 hosts. In Licensing it show 50 insides hosts. I also tried to update to ASA 8.4.5 but that did not work.
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Jun 11, 2013
I'm having a bit trouble to limit the bandwidth on outgoing traffic with a Cisco ASA 5505.
In my case I want to limit the bandwidth to 31mbit/s up and down on the outside interface. but with my current configuration, just the download rate gets limited to 31mbit/s when I do a tptest. and the upload is around 40/50mbit.
Here is the policy configuration,
access-list outside_bw extended permit ip any any
class-map outside_bw
match access-list outside_bw
[Code].....
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Aug 7, 2012
We need to have one connection with less internet bandwidth assigned to it than all other other connections. Basically it is a separate conection from all others, incoming just from one switch port and separate VLAN.I know this can be done on the switch by limiting the bandwidth allocated to a port,
however, is it possible to have the speed limited down, just before it goes to the internet, ie, on the ASA, rather than doing it on the switch?The firewall is an ASA 5505.
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Sep 30, 2011
My little ASA 5505 is working great The device appears to be artificially crippled and limited to 10,000 connections. This isn't a "CPU limit" it's just some fake limit in the device as far as I can tell.
The problem we have is that we are only using around 500-600 connections and CPU usage is only like 25%, and yet the connection count is pegged at 10,000 and locks us out of our network.
I am pretty sure this is because there are a lot of "dead" TIME_WAIT connections hanging around not being used. In our application we only have the couple hundred connections but they do move around a bit every now and then.
Is there anyway to get the device to ignore the "dead" connections and not count them towards the artificial limit on the device given that it's pretty clear the CPU / etc., is not utilized sufficiently. These aren't real connections, we only have a couple 100 established, they do just move around a bit however.
We are really only using 500-700 connections according to our servers, the others are just sitting in TIME_WAIT doing nothing.
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Jan 7, 2013
After getting hacked I want to limit terminal server/ remote desktop to only my computer. (although I may need to let other net in later)
In other words I want only computers from my home ip range (lets say my ISP gives me at home something in 28.28.XX.0) to be let in to the router at work and then to port 3389.
In the work ASA 5505 softwareVersion 7.2(4) I now have:
access-list outside_in extended permit tcp any interface outside eq 3389
static (inside, outside) tcp interface 3389 192.168.1.2 3389 netmask 255.255.255.255
acces-group outside_in in interface outside
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May 29, 2011
We have Cisco ASA 5505 and an internal user (behind NAT) needs to connect via VPN to an external company. I just cannot get this to work. I have enabled IPsec Pass Through from ASDM Configuration --> Firewall --> Service Policy Rules --> Edit Service Policy Rule --> Rule Actions --> tapped IPsec Pass Through I have tried to find some info from the log but all i get is this message: IP = [remote gateway ip] Invalid Packet Detected!"I cant find anything that is blocked from the log.
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Mar 9, 2011
On an ASA 5505 with the proper licenses running version 8.3, which would you consider the more resource intensive for the ASA, IPSec VPN or an SSL VPN with a portal?
The connections through the firewall would be the same so I am curious how adding the different types of VPN will affect the CPU and overall ability of the ASA to function.
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May 6, 2012
I have setup a ASA and everything but ipsec seems to be working. I was able to use the clientless ssl but I need ipsec working. I'm at a loss. config is a little sloppy and i will be cleaning it up but would like to get this working first.
Cisco Systems VPN Client Version 5.0.07.0290
Copyright (C) 1998-2010 Cisco Systems, Inc. All Rights Reserved.
Client Type(s): Windows, WinNT
[Code].....
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Oct 3, 2011
I have Cisco ASA 5505 and i want to create vpn remote access ...l
so i created and connected to the vpn ...my problem is to reach my Local connection of 192.168.1.0 /24 i put the WAN Connection in the FA0/0 and put my LOCAL AREA CONNECITON into FA0/1 .. so how i can route or translate my connection , and using cisco ASDM 6.1 in GUI ,,,
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May 23, 2011
I am trying to configure a Cisco ASA 5505 for Remote Clients.I am using ASDM interface and used the startup and ipsec wizards for my configuration but im hitting a stumbling block.For the last 2 days i have tried a number of configuration changes in attempt to make this work but failed, so i have done a factory reset and gone through the wizards again, so i have a clean configuration. Currently i have a Static Public IP Address 81.137.x.x and i am using a Netgear ADSL router, which is forwarding VPN traffic (UDP 500) to 192.168.171.35 (the wan port on the ASA 5505).The Cisco ASA has a default address of 192.168.1.1 I am using Cisco Client 5.0.06.0160.I have configured the client to use Group Authentication with the same credentials as setup through the wizard and im using Transparent Tunneling IPSec over UDP.I have attached 2 documents running_config.txt - which is shows the current ASA configuration Log-View.txt - showing error messages displayed in the real-time log viewer when i try to connect from the remote client.Im not sure whether i need to do any additional configurations for my setup other than simply run the wizards.
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Mar 19, 2013
I am trying to configure an IPSEC vpn on an ASA5505 I setup an SSL vpn and it works fine, I can browse to the https: address log in and connnect to servers However when I try to setup the ipsec client access vpn it will not connect and I am getting the errors below I used the wizard for the initial configuration Looks like the inital IKE is being blocked or dropped?
%ASA-7-710005: UDP request discarded from my external IP/35781 to external:ASA-external/500
%ASA-7-710005: UDP request discarded from my external IP/35781 to external:ASA-external/137
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Aug 22, 2011
I´m getting a dynamic public IP from my provider and what I´m trying to do is to establish a remote vpn tunnnel using IPSec which I achieve but every time the sessions resets or the ASA 5505 resets I get a new public IP and I need to put the new IP on the remote client so I can establish the vpn... How can I establish an ipsec vpn using DNS? For this scenario the remote vpn client is a vpn phone but it could be for any vpn client.
Private IP Public IP Private IP
PBX ---- (LAN) ---- ASA 5505 ---( Internet ) --- Remote Site ( Router ) --- (LAN) -- VPN Phone
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May 7, 2012
I have a site to site IPSec tunnel setup and operational but periodically the remote site goes down, because of a somewhat reliable internet connection. The only way to get the tunnel to re-establish is to go to the remote site and simply issue a ping from a workstation on the remote network. We were having this same issue with a Cisco PIX 506E but decided to upgrade the hardware and see if that resolve the issue. It ran for well over a year and our assumtions was that the issue was resolved. I was looking in the direction of the security-association lifetime but if we power cycle the unit, I would expect that it would kill the SA but even after power cycling, the VPN does not come up automatically.
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Mar 2, 2012
Got some issues when setting up IPSEC/VPN on the asa 5505. I want to connect from the ipad with the built in IPSec client..Get errors when i run the debug crypto isakmp
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Dec 14, 2012
I would like to know if I have only using IKEV2 to connect site to site VPN with Cisco 5505 device to connect few site. Which encryption method is better to choose with faster and stable IPsec encryption proposal,AES256, AES192, AES, 3DES, DES ?? which one is the best in IKEV2 site to site VPN tunnel?
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Nov 18, 2011
I configured an IPSec VPN tunnel between two ASA 5505 firewalls. I would like to make sure that the IPSec tunnel (hence the security association) is permanent and do not drop due to idle condition.
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Apr 5, 2012
I just made a VPN on my ASA 5505 at home, I can connect successfully to it, but I can't contact anything in the network, nothing respond to ping or to anything else (include the ASA inside IP).
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Sep 5, 2011
I have two sites with identical asa 5505's and each has the dual wan/ISP links and are set for failover using sla monitor tracking. I would like to create a vpn between these two sites that stays active regardless of which ISP link is online. Do I simply make two crytpo map statements10 and a 20 inside each of the asa's to each of the other ASA's STATIC PUBLIC IP's? [code]
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Mar 19, 2011
I have a Site to Site IPSEC VPN Tunnel created with ASDM wizard.
Cisco ASA-5505
Peer A: x.x.x.x
Lan A: 192.168.0.0 255.255.255.0
Fortinet FortiGate-50b
Peer B: y.y.y.y
Lan B: 192.168.23.0 255.255.255.0
I start traffic from LAN B with a ping (or telnet it doesn't matter) that receive no reply but tunnel goes up fine.
"show isakmp sa" seems ok (says "State : MM_ACTIVE")
"show ipsec sa" seems ok but all #pkts are zero
try ftp, telnet from LAN B to LAN A systems but no one work. "show ipsec sa" all #pkts are zero As soon as I generate traffic from LAN A to LAN B these works (with tunnel already up) also traffic from LAN B to LAN A works.Obviously if I end VPN and start tunnel making traffic from LAN A all work fine bidirectionally, LAN A reach LAN B and LAN B reach LAN A.No msg logged in either two appliance.
Seems a very strange problem because seems not related to Phase1 or Phase2 already established.Traffic (routing ?) start works only after at least one packet goes from LAN A to LAN B.No msg logged in either two appliance.Problems begun in ASA version 8.0(4) ASDM version 6.1(3) and remain/continue after upgrade to ASA Version 8.4(1) ASDM version 6.4(1).
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Aug 3, 2011
I'm trying to connect two ASA 5505s for a IPSec L2L VPN. They can connect, but not pass traffic from the AnyConnect subnet. I've added the config from ASA-2, with the LAN subnet of 192.168.138.0 and a subnet of 192.168.238.0 for AnyConnect client.
I'm trying to get the AnyConnect Clients access to the 192.168.137.0 LAN behind ASA-1 at 1.1.1.1. Having both 192.168.238.0 and 192.168.138.0 both access 192.168.137.0 is acceptable.
There's probably a lot of cruft in this config, as I've been reading all over forums and docs without much success.
:
ASA Version 8.2(1)
!
hostname asa-wal
names
name 192.168.238.0 anyconnect-vpn
!
interface Vlan1
nameif inside
[code]....
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Feb 10, 2011
Having a problem getting an ipsec tunnel to work between 2 asa 5505. This in one of the two configs.
Result of the command: "show run"
: Saved:ASA Version 8.3(2) !hostname 20Pullmandomain-name skeincenable password IKxxneNMTRgDw/Xd encryptedpasswd 2KFQnbNIdI.2KYOU encryptednames!interface Vlan1nameif insidesecurity-level 100ip address 172.16.1.70 255.255.255.0 !interface Vlan2nameif outsidesecurity-level 0ip [Code]...
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Sep 27, 2012
A customer has a 5505. According to the datasheet the limit of IPSEC sessions is 25 and the limit of anyconnect sessions is 25. Does that mean I can have 25 IPSEC tunnels and 25 Anyconnect tunnels at the same time? The customer needs at least 50 concurrent tunnels on his ASA. Am I understanding it correctly?
I was thinking the customer could pay for the anyconnect essentials license and connect his anyconnect clients to the ASA. Is that a good option to get the 50 concurrent clients connected?
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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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Jan 27, 2013
Got some issues when setting up IPSEC/VPN on the asa 5505. I want to connect from the ipad with the built in IPSec client..Get these errors when i run the debug crypto isakmp.
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Jun 19, 2012
I have 2 ipsec tunnel active on ASA5505 (secplus license).I would like to activate sslvpn also. Is it possible or there are issues in keeping active both services?
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Dec 20, 2011
I have difficulties with configuring Remote IPSec VPN with Cisco ASA 5505 and Windows 7 native VPN client. My client PC gets VPN pool IP address, and can access remote network behind ASA, but then I lose my internet connectivity. I have read that this should be an issue with split tunneling, but I did as it is told here and no luck.On Windows VPN Client settings, if I uncheck "use default gateway on remote network" I have internet connectivity (since client is using local gateway), but then, I cannot ping remote network.In log, I see this warnings of this type:Teardown TCP connection 256 for outside:192.168.150.1/49562 to outside:213.199.181.90/80 duration 0:00:00 bytes 0 Flow is a loopback (cisco)I have attached my configuration file (without split-tunneling configuration I tried). If you need additional logs I'll send them right away.
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