Cisco VPN :: 5520 Are RA IPSec And SSL VPN Ports Allowed By Default
Mar 27, 2013
We have set of PC's who will be connecting either RA IPsec or SSL VPN to another location. On our site, our perimeter device is an ASA 5520 8.2(3). The interfaces on this ASA doesn't have Access Lists applied, so from what I understand, there is a default policy applied globally (class-default). Now my question is: If we set up vpn clients on our pc, are the ports used by the clients to the VPN server allowed by default or do we need to tweak the class-default?
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Oct 25, 2011
ASA 5505 8.2.1
ASA 5520 8.4
We currently have a tunnel configured between 2 ASAs
1- Is it possible to assign 1.5 Mbits of Bandwidth(BW) to this tunnel?. Then if Tunnel number 2 is configured I could assign 2 Mbits to that one for example?
I am not referring to prioritizing certain type of traffic over the IPsec tunnel, I am referring to Tunnel 1 has 1.5 Mbits of BW guaranteed for all traffic that goes thru it. Same for tunnel 2
Then
2- How to monitor the amount of BW in an IPsec tunnel?
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Oct 14, 2012
Users behind a Cisco 1841 are not able to connect to a network using the Cisco Systems VPN Client. Transport is IP sec over UDP (NAT/PAT). Connection just times out.
Which ports should be allowed in the access list? Or do you have an link to a article for this?
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Aug 10, 2011
i allowed one of internal ip using static nat and public ip is 203.18.137.22 and i want to check which IP are hit this public ip ?Is there is any command to check which ip is hitting 203.18.137.22? I have the cisco 5520 asa firewall.
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Apr 20, 2013
Port forwarding done to a DMZ located server on the cisco ASA 5520. Now this host cannot browse but allowed outside to inside access is possible Is there anyway i can give this system to browse internet? may be through the natted IP ( 94.20.*.*)
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Nov 4, 2012
I need to check and possibly change which Network address is allowed down a tunnel and check our Phase 2 IPSEC proposal. How would I do this on a VPN3000?
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Jul 17, 2011
Can threat detection provoke frequent disconnections on allowed traffic?We are using asa 5520 with 8.3.1 IOS For instance in ASDM we see SYN attack messages .The source ip address correspond to external an external host (in the outside interface) wich is allowed to connect to internal servers(in the internal interfaces).
Our threat conf is as follow:
threat-detection rate dos-drop rate-interval 600 average-rate 100 burst-rate 400
threat-detection rate dos-drop rate-interval 3600 average-rate 80 burst-rate 320
threat-detection rate bad-packet-drop rate-interval 600 average-rate 100 burst-rate 400
threat-detection rate bad-packet-drop rate-interval 3600 average-rate 80 burst-rate 320
threat-detection rate acl-drop rate-interval 600 average-rate 400 burst-rate 800
threat-detection rate acl-drop rate-interval 3600 average-rate 320 burst-rate 640
[code]....
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Jul 21, 2012
We have ASA 5520 acting as the VPN Server and Cisco 1941 router as EZVPN client. Since last few days client is not able to establish vpn connection. 1941 router is continuously generating the below log messages
001569: Jul 22 12:19:05.883 ABC: %CRYPTO-4-EZVPN_SA_LIMIT: EZVPN(VPNGROUP) Split tunnel attributes(51) greater than max allowed split attributes(50)
001574: Jul 22 12:19:07.835 ABC: %CRYPTO-6-EZVPN_CONNECTION_DOWN: (Client) User=vpn_user Group=VPNGROUP Client_public_addr=<client public ip> Server_public_addr=<server public ip>
004943: Jul 22 11:32:42.247 ABC: %IP_VFR-4-FRAG_TABLE_OVERFLOW: Dialer1: the fragment table has reached its maximum threshold 16
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May 2, 2011
I'm trying to configure a 3com 5500 switch with default ports for each vlan.The default ports are connected to IPS/IDS and do not have an IP address. I have a trunked esx host coming in and want to send traffic to specific ports based on vlan id - one port per vlan (10 total). Right now all I'm getting on the ips/ids is stp and arp traffic.
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Oct 19, 2011
I wonder if any of you now if there exists a small IPSEC box that can be put between units that don't support IPSEC? I'm not looking for a Wireless router with a WAN port. Only a small box with 2 ethernet ports and IPSEC client support.
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Nov 24, 2011
I've configured a VPN IPSEC on my ASA5510. It Assigned IP/NETMASK/Gateway via a DHCP Server on the LAN.The problem is that when a client is connected to the VPN , it takes the right IP and NETMASK. ( 192.168.1.109 / 255.255.255.0) but the Default Gateway is wrong ( 192.168.1.1). It should be the default Gateway of my LAN router ( 192.168.1.229).
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Apr 26, 2012
I'm running several game and file servers via a dynamic IP, which I unfortunately cannot change to a static connection for several reasons. I've solved this by using No-IP, which is a Dynamic IP resolution service. This solved the first part of my problem - I can give people IP's for their websites, such as myfreemusic.sytes.net and so forth, but they all HAVE to append their ports to the url - i.e.
site1.sytes.net:90
site2.sytes.net:91
My main problem right now is the game servers - I'm hosting games that default host to 25565, and though I can change the ports the server hosts from, I must give those who want to connect the ports at the end of their urls, i.e.
server1.sytes.net:25566
server2.sytes.net:25567
I know DNS is essentially agnostic when it comes to ports, so no solution there. And I don't think the game (Minecraft vis-a-vis bukkit) supports SRV records, and even if they did, I'd have no idea how to configure them. How can I resolve static urls redirecting to a dynamic IP by pointing them to ports?
To simplify the question -
How can I make server1.sytes.net resolve to port 25566, and server2.sytes.net resolve to port 25567 when the default port is set to 25565?
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Jul 12, 2011
I have another asa 5520 and it is configured. when i do factory default every thing erase. ok. when i enter again it promped for enable password. and it takes my privious password taht i gave in full configuration.
It generally comes no password . Why enable PW dont erase ? why factory default holds my previous password ?
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Nov 19, 2011
I need to forward several ports. however it has been complicated by a missing or corrupt default access gateway. [code] I am leaving for quite a while tonight, hoping to come back to a reply I am using a belkin router ( will get model number and stuff later - not sure if its needed ) * and wow cable and internet url...
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May 22, 2010
Currently running a pair of 5520 as VPN routers. running 8.0.3, been using only Anyconnect SSL VPN for end users. These boxes do nothing else except serve VPN clients.However, recently we tried testing some IPSEC clients and are realizing that the Anyconnect SSL VPN clients is about 10x slower than the IPSEC client.From my house, downloading either CIFS or FTP, I can pull pretty close to 1.0mbps, while using Anyconnect, I pull 0.1mbps. What could be causing this slowdown? Should SSL VPN performance be on par with IPSEC? Clients all are windows 7, 64 bit. and the testing is being conducted on the same device.
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Nov 19, 2011
The network design is a hub and spoke using a carrier provided MPLS network with a ASA 5520 at the hub that has a IPSec tunnel to another part of the company.This configuration has worked for sometime now (long before I came to the company a couple of months ago).The thing that does not make sense to me is that the those networks out on the spokes did not have a route to the inside interface network of the ASA. With the way this MPLS works, if a network is not in the MPLS network routing tables it will not pass that network. The network was not in the MPLS network, nor was it in any of our edge routers connecting to the MPLS.
These hub networks did have routes both in the MPLS and edge devices for the networks on the other side of the IPSec tunnel and have been reaching them for some time.So what I am trying to understand is how it is possible for these hosts that have no route to the ASA inside interface network, but do have routes to the remote networks, how are they able to successfully pass that traffic? There are no NAT devices between these WAN hosts and the ASA.
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Feb 17, 2011
I have a client that uses the ASA 5520 as both a firewall and VPN termination device. Day to day VPN usage is 30-50 users and the memory (512 MB) is typically at 50% while the CPU is mostly under 30%. I've suggested the RAM be upgrade to 1GB.The client would like to add a large block of VPN users which could see 250-300 concurrent users. What kind of a system resource hit should the expect with this level of load?
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Apr 9, 2012
I am struggling on a problem for over 2 weeks despite of various researches.
We have a Cisco router, then an ASA 5520 8.4(3).
The private interface of the ASA is connected to a switch, and so on connected to one interface of the router.
The private interface is as following : 129.88.63.253 255.255.248.0 (/21) =>
It is in the 129.88.56.0/21 subnet
Here is the part of the router config we are interested in :
!
interface Vlan32
ip address 129.88.63.254 255.255.248.0 (this is the tunnel default gateway configured on the ASA - 129.88.56.0/21 subnet)
ip address 129.88.71.254 255.255.255.0 secondary
ip address 129.88.75.254 255.255.252.0 secondary
ip access-group CVPN-depuis-129.88.56 in
ip access-group CVPN-vers-129.88.56 out
ip verify unicast source reachable-via rx allow-default
no ip redirects
mls rp ip
!
On the ASA, there is currently one default route for the tunneled traffic :
route Private 0.0.0.0 0.0.0.0 129.88.63.254 tunneled
As you can see, it's on the same subnet as the primary IP address of interface Vlan32 on the router.
The scenario is as following :
- we can connect to the VPN with the appropriate alias (LDAP connection), then we get an IP address in the defined range (it's a local ASA pool)
- the pool is : 129.88.71.0/24
- but, once we are connected, we can't do anything, because it seems like we don't have any network access
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Jun 24, 2012
I have made the following change to my ASA 5520 using ASDM to try and force VPN clients to use a self assigned certificate from the ASA. I made the following changes Remove Access VPN > Certificate Management > Identity Certificates > Add Certificate.Then I made the following change.. Remote Access VPN > Network (Client) Access > IPSec(IKEv1) Connection Profiles > Connection Profile > Edit > IKE Peer Authentication > Pre Shared key and pointed the identity certificate to the one I created in the step above.Having made this change I am still able to VPN without a certificate configured in authentication settings.I was expecting that the VPN would attempt to issue the self assigned cert to client machine?
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Feb 15, 2011
Options a user may reside in Austin, TX and I want the user to utilize the local proxy (i.e. texasproxy:8080). We currently only require the user to enter the RSA passcode and username to authentication (RSA/AD username are identical). Is there a way to have the user authenticate via RSA and have the user's AD group membership (TX) assign the user the specific IE proxy settings? We are utilizing an ASA 5520 on 8.2, but we are willing to upgrade to newer IOS or even consider anyconnect to resolve this issue.
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May 28, 2012
Currently we are having a 2 ISP for Internet. Need to achieve redundancy for IPSEC VPN using the domain.
Requirement :Will configure a domain and assign two public IP address from 2 service providers. Will set the priority for the public ip address and do the manual change during the ISP failure.We will provide the domain name to the clients to setup the IPSEC VPN.So incase of failure by one ISP, we will change the priority in the domain to point to the availble address.So that we can reduce the downtime and no need of configuring new IPSEC VPN tunnels.
Question :Whether we can achieve this in Cisco ASA 5520.Or do we have an alternate solution to overceome this solution.
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Sep 8, 2011
When I try to add CAS to CAM a cannot choose a OOB Virtual Gateway or OOB Real-IP Gateway, because these operation modes are absent in Type list.What can be reason it?
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Apr 4, 2011
Here is the situation: A CISCO871 router is configured to establish an IP SEC tunnel with a CISCO ASA5520. The configuration is OK about that. I wish to configure the same CISCO871 in order to establish a LAN-to-LAN IP sec Tunnel with another CISCO871 at the same time in order to reach private network. So, I have followed the Cisco procedure Document ID: 71462 "LAN-to-LAN IP sec Tunnel Between Two Routers Configuration Example"; it works, I can reach the peer private network BUT ONLY when the IP SEC tunnel with ASA is not established.
It seems to be a routing problem...I don't find how to configure to make both tunnels up and functional at the same time.
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Mar 17, 2011
I´m trying to configure a subinterface named Inside with vlan 1 but the interface stops work with this vlan.My switch is a Cisco and use the lan with vlan 1 too.If I change de vlan for other i.e vlan13 works fine. And all others vlans works fine too.Is there a problem to use the vlan 1?
My configuration is:
Cisco ASA:
interface gig0/3
no ip address
no security
no nameif
Interface gig0/3.1
vlan 1
nameif Inside
Securirity-level 100
ip address 10.x.y.x 255.255.224.0
The giga port of the swtich is configure to trunk model.
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Mar 2, 2013
I have two ASA 5520 units, both running version 8.3(2) code. Among many other uses, they have an IPSec tunnel between them to link office 1 and office 3 together. Office 2 does exist, and is connected to a different port on the ASA in office 3; there is no IPSec involved with office 3.
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Jun 26, 2011
I have set up a remote access ipsec vpn on an asa 5520. I can connect, and ping internal ip addresses, however I cannot ping back out to the internet, and dns resolution does not work.
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Jun 23, 2011
I am trying to set up remote access vpn on an asa 5520 running 8.4.1. I have the ipsec group, policies, and ip pool set up. When I try and connect with the cisco vpn client I see the following in the logs. Deny icmp src outside:214.67.39.42 dst outside:24.252.51.73 (type 3, code 3) by access-group "acl_inbound". Do I need to put in some firewall rules to allow this traffice so that the VPN can connect?
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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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Nov 13, 2011
We have multiple vpn tunnels coming to our cisco asa 5520 , the problem is that when we create another tunnel with the same network as another network on the firewall , it does not know how to route the traffic to which interface or sub interface.
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Mar 20, 2013
How can I see the quantity of traffic that is passing through into an IPSec VPN in a ASA 5520.
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Mar 25, 2011
i have configure l2tp/ipsec vpn on cisco ASA 5520 and also configure windows 7 client but its getting error
Error in ASA debug log
debug crypto isakmp 7
Mar 26 07:44:28 [IKEv1]: IP = 59.161.130.13, IKE_DECODE RECEIVED Message
[Code]......
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Sep 10, 2012
I would like to know if the ASA 5520 BUN K9 supports the data compression on VPN IPsec.
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Mar 7, 2011
Is there any documents that I can use to design an IPSEC remote access solution using 2 data centers . One data center is primary and other one is secondary. The VPN is terminated in ASA 5520. End users using cisco client.
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