Cisco Firewall :: ASA5510 / Simultaneous Clientless SSL Connections?
Jun 14, 2011
I've setup access via our ASA5510 portal which is working fine but I can't seem to connectto the ASA when there are two active connections. If there is only one, it's fine.
Problem - Unable to Connect More Than Three WEB VPN Users to PIX/ASAProblem :Only three WEB VPN clients can connect to ASA/PIX; the connection for the fourth client fails.
Solution :In most cases, this issue is related to a simultaneous login setting within the group policy.Use this illustration to configure the desired number of simultaneous logins. In this example, the desired value was 20.
ciscoasa(config)# group-policy Bryan attributes
ciscoasa(config-group-policy)# vpn-simultaneous-logins 20Would this be the same thing?
If so how whould I check the existing setting in the GUI?
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Feb 7, 2011
Is It possible to hairpin clientless SSLVPN connections (ASA5510)? I'd like to create a portal that allows a user to log into the central clientless webpage and access RDP/VNC resources at remote sites connected via site-to-site VPN. Initial testing shows the user can access resources at the hub site, but not the spokes. I have the standard:
same-security-traffic permit inter-interfacesame-security-traffic permit intra-interface
...entered on the ASA.
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Sep 5, 2012
I have configured a ASA5510 for clientless access by using the ASA http bookmark. The web server require an authentication by sending a web server logon screen. If I enter the user credentials at IE7 or IE9 browser on the the web server logon screen the authentication fails, the web server logon screen appears again and again without any error message. If I use the firefox browser instead of IE browser the web server authentication works without any problems. These problem appears only by using the ASA device, the local lan access with IE7 and IE9 and web server authentication works without any problems. Is that possible to configure the ASA http bookmark with the domain credential?
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May 15, 2013
We are planning to use an ASA 5540 to terminate about 3000 IPSec connections. The maximum supported IPsec VPN Peers for this platform ist 5000, so this should be ok in theory.
What is a bit unclear to me is what exactly happens when (for whatever reason) all 3000 clients try to connect at once ? Perhaps it's not at once but depending on timers this could mean 3000 incoming IPsec connection within 10-20 seconds.
Will the the ASA cope with it ? I can't find any info regarding this on CCO. It's also not that easy to test/simulate.
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May 28, 2011
Today I read a comment on a review of DIR-615 [URL], saying it supports only 32 concurrent connections where as other routers support more than 200
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Dec 15, 2011
I am setting up a clientless SSL VPN and AnyConnect on a ASA5510 running 8.4. When I login to clientless SSL VPN I get a menu with AnyConnect showing as an option. When I click on that AnyConnect it try to load. Half way loading an error message pop up.Error message:The secure gateway has rejected the connection attempt. A new connection attempt to the same or another secure gateway is needed, which requires re-authentication. The following message was received from the secure gateway: No address available for SVC connection.When I load AnyConnect seperately then it works. I don't have that problem when using 8.2.
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Feb 6, 2012
Does any body know what is the maximum of simultaneous connections that the AIR-LAP1131AG-E-K9 access point supports?
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Nov 5, 2012
I bought this router to temporarily replace my firewall while I wait for it to be replaced. We have a training center that when running full tilt, we probably have 50 devices trying to get on the internet.
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Oct 16, 2012
Web clients are receiving login failed messages and VPN clients are getting disconnected by host messages. I am able to ping the server from the ASA5510. Users authenticate in AD. I am not sure if the problem is on the server or the ASA.
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Nov 3, 2012
this issue with my WRT54G2:
- when i open more than 2 or 3 browser windows or anything that access internet, it stop routing
- shutdown and power up make it work again (then stops again after some simultaneous tcp connections)
- hard reset dont work
- WRT54G2 V1 Firmware Version: 1.0.04
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Aug 15, 2012
We are implementing an ASA 5510 firewall with DMZ. Our UDP packets are able to get outside the firewall, but our TCP packets are being denied because of no connection. I've attached the config file and log file.
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Sep 18, 2012
We have a second ASA 5510 that is suppose to be a hot standby. I need to find out that, as a hot standby, does it have to have the same licenses as the ASA that it backs up. We purchased 50 SSL VPN licenses for that unit. If it fails over, we need to make sure the failover asa can allow SSL VPN connections.
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Sep 20, 2012
How to configure our ASA to nat our to internetconnections, at the moment the first work fine,
ISP1 NAT
ASA5510 LAN
ISP2 NAT
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Jun 12, 2011
when a user login into the Cisco ASA Firewall (v8.3.2) via WebVPN, and accesses the applications. This works fine. In fact, the user can also create bookmarks etc.The problem here is when this user signs off and another user signs in via WebVPN, on the same PC or even on a different PC, this new user can view the screen viewed by the previous user. Basically, even though certain users can view only certain applications, but in my case, not all the time, but most of the time, users logging into via WebVPN can view someone else's profile application.
I suspect this is due to cookies or cache but I'm not sure myself. What can I do to resolve the problem.Currently, this issue is being resolved via a lousy manner i.e. we go to the SMB location and we clear the .CSP file manually, which is not the correct way to address this issue.
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Feb 29, 2012
I have an ASA5510 from which I am using 3 interfaces.
-One interface have the main internet connection router
-One interface is attache to a switch 3750 and has multiple virtual interface configured on it
-One interface has another internet connection router.
What I am trying to do is to have only one of the Vlan using the second internet connection and not the first one.
My idea was to just have a static route who says that on interface VLAN_B (for the special VLAN), all traffic goes to 2nd internet router interface. But it does not route. All I have is a default route configured : on interface Internet1 0.0.0.0/0 goes to 1st internet router interface.
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Jun 6, 2012
ASA 5510 have two model Bun-K9 and Sec-Bun-K9 from the datasheet find out difference Port related and Redundancy. My questions is : Have any major difference for Security service between two model ?
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Mar 25, 2012
I have a 1841 router with two wan access from two different ISP:throught dialer with fixed ip obtained from dhcp - ATM interface,thought fastethernet 0/1 with fixed ip and a specific gateway - can be use for Internet traffic if dialer is down.I can't manage to make them accessible at the same time (ping and ssh).In a second time I would like to have a VPN client access on one wan and site to site VPN on the other, instead of having the two on one wan.
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Jun 11, 2012
I am able to ping from Switch to firewall inside ip and user desktop ip but unable to ping from user desktop to FW Inside ip.. config is below for both switch and FW Cisco ASA5510....
TechCore-SW#ping 172.22.15.10
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.22.15.10, timeout is 2 seconds:
[Code].....
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Oct 28, 2012
Purpose:From my Dell Inspiron 8200 laptop, I need to make this connection-A. Ethernet LAN port to connect to telecom transmission equipment for management and configuration purpose;B. Wireless USB module (150 Mbps) to connect to the internet.Problem:I cannot establish A & B connections simultaneously, as either A is busied out by B or vice versa.Question:How can I seamlessly connect to my transmission equipment (Via LAN) at same time connect to the internet (Via Wireless usb)?
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Jun 29, 2011
I have two ASA5510's set up in failover, and the secondary keeps crashing after doing the interface checks when bringing failover up. This only happens if I try to upgrade the image on the secondary to anything newer than 8.4.1 (I've tried with 8.4.1-11 and 8.4.2). The primary one run just fine with new images.
I don't have the exact error right now, as I need to do a screen capture from console. It's just a huge crash dump.Are there anything I might have missed during the upgrade? Should I cold-boot both the firewalls in the correct order?
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Mar 7, 2013
I am doing right now a site survey using CAP3502E (downgrade to autonomous). I have a certain section with 12 users and the client wants 5 users per AP. Can the CAP3502E accomodaet 12 users at a time?
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Mar 12, 2012
I know enough to be dangerous when it comes to networking, but this one has me baffled. I'm running a win 7 pc with dual nics.
I need to have 1 nic connected to a vpn and the other to be restricted to intranet access only. I can't for the life of me figure out how to accomplish this.
Once I connect 1 nic to the VPN i'm no longer visible to my lan, even if the 2nd nic is connected.
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Oct 26, 2011
I already have a DIR-855 and was considering using a DAP-1522 in conjunction to bridge my 5GHz N to my living room to feed HD media to my PVR box and also feed wired-only clients like my TV and BR player. But, in my new flat I find that the walls are pretty thick and my wifi signal is dropping off pretty quick, so I was wondering if you can configure the DAP-1522 to simultaneously be a wifi bridge to feed my media clients, and an AP to feed any laptops that might be in use in the living room?
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Sep 10, 2012
i have a ASA5510 in the office, that already configured 3 context, namely, admin, user, server.in the server context, the last running config was not saved, and there was a power trip last friday night. 1 of the sub interface was affected, and i need to recreate that interface.I am getting the below error, it only allow me to do changes those pre-defined interface.how to I create extra sub interface?
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Jul 21, 2011
I have a ASA5510 and I have a question about the speed the ports can handle, here is one port:
-interface Ethernet0/2
- speed 100
-shutdown
- no nameif
-no security-level
-no ip address
it's ethernet and not fastethernet so I figure it will only go to 10Mbps, but at the same time I can hard code the speed to 100.
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Feb 22, 2012
i have cisco ASA 5510 Firewall using in my network, i have planning to upgrade the Flash memory from 256 mb to 512 mb and the RAM from 256 mb to 1GB.
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Dec 7, 2012
I have Linksys WRT54G2 V1 it suddenly died yesterday. I does not broadcast any wifi, I tried connecting via cable but there is no LAN, "Network Cable Unplugged". I also tried to do 30 sec reset even the 30/30/30 reset but no success. The front lights and power supply are blinking exept the Wifi and Power indicators.
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Mar 14, 2013
IOS Firewall (ZBF) Limit SMTP connections from same IP
we are running a Postfix MTA behind a IOS Firewall (ZBF) on a CISCO1921. Sometimes we get more than 2000 smtp login attemps like
postfix/smtpd[123456]: connect from (...) (...) postfix/smtpd[123456]: lost connection after AUTH from (...)
in one second. May be bruteforce or DoS ... nevertheless - we like to protect the Postfix MTA from this stuff.
Can we inspect the smtp and limit connections in a time period from the the same IP? Something like "not more than 10 smtp connections during 60 seconds from the same ip" .
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May 4, 2012
I have a cisco asa 5510 with security plus license in Live enviroment . I need to add a secondary firewall . I was planning to do in active /standby mode for failover .But i have a doubt , when i do "show version " on live asa output says Active /active failover , does this means that i can only configure failover in active/active mode not in active/standby (which i want to do )?
Maximum Physical Interfaces : 8
VLANs : 20, DMZ Unrestricted
Inside Hosts : Unlimited
Failover : Active/Active
VPN-DES : Enabled
VPN-3DES-AES : Enabled
VPN Peers : 25
WebVPN Peers : 2
Dual ISPs : Enabled
VLAN Trunk Ports : 8
AnyConnect for Mobile : Disabled
AnyConnect for Linksys phone : Disabled
Advanced Endpoint Assessment : Disabled
UC Proxy Sessions : 2
This platform has an ASA 5505 Security Plus license...
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Feb 12, 2012
i am using Cisco ASA5510 Firewall in my Network in the distrubition Layer .Private Range of Network Address use in the Network and PAT at the FW for address translation.presently encountering an issue the users behind the FW in my network unable to RDP at port 2000 presented at the Client Network.Able to Telnet on port2000 but not RDP . any changes needed at the FW end to get the RDP Access.
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Feb 14, 2013
I would like to ask if the ASA5510 can support TLS 1.1 above?On the ASDM it can only be chosen between SSLv3 or TLSv1.When "Negotiate SSL V3", the Active-X plugin can not be loaded (IE 9 with supported SSL v3). It seems that the plugin only works with TLSv1.Is there some roadmap for the TLS1.1/1.2?
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Sep 2, 2011
Configured Clientless SSL VPN Access and it works properly for everything except connectivity to an HP iLO. When I go to the http address, I see the redirect page come up but as soon as it goes to the https page, I get the following:Connection failedServer 192.168.10.252 unavailable. It happens on any HP iLO web sites I try to connect to.
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Jun 9, 2013
I have issues connecting to the webvpn as its asking for some certificate for authentication, I am using the self generated certificate, but when I try to connect to SSL gateway via its IP address , Browser expect me to provide the certificated, I want to tell the Browser to use the self generated certificate of ASA5505, but not sure how I do it.I undestand when WEBVPN/SSL clientless VPN try to establish the VPN , ASA sends the certificate back to the browser to accept/authenticate it, but when I connect I don't get any certificate where I say YES to accept it.Can I just disable certificate with SSL and just use username/password to crater a WEBVPN ?
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