Cisco Security :: ASA5510 - Single Timeout Drops Remote-Desktop Session
Oct 19, 2012
Just recently we replaced our HQ Cisco-Pix with Cisco-ASA 5510. where we have many branches connecting to our HQ through site-to-site vpn. Since putting this new ASA5510 at HQ , while we are getting a Remote-Desktop session into our branches clients, and at the time when even a single TIMEOUT occurs on the vpn-link so the remote-desktop session gets completely lost. then we have to re-connect the session.This issue happens as i said above when a single timeout occurs on the vpn link. What is the issue with the ASA5510. because with pix we didn't have this issue, remote-desktops were never getting lost / reset with single timeout
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Oct 17, 2012
Just recently we replaced our HQ Cisco-Pix with Cisco-ASA 5510. where we have many branches connecting to our HQ through site-to-site vpn.
Since putting this new ASA5510 at HQ , while we are getting a Remote-Desktop session into our branches clients, and at the time when even a single TIMEOUT occurs on the vpn-link so the remote-desktop session gets completly lost. then we have to re-connect the session.
This issue happens as i said above when a single timeout occurs on the vpn link. What is the issue with the ASA5510. because with pix we didnt have this issue, remote-desktops were never geting lost / reset with single timeout
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Mar 30, 2012
REmote desktop connection times out when there is no activity, I mean I open rdp to work computer from home ,If I am away from the computer I am not using keyboard , after few minutes I get a blank screen and if it is very longthe connection times out and I have to relogin to my computer, I need suggestion on how to retain the connection so that no blank screen appears and I alos dont loose connection .
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Feb 21, 2013
I recently upgraded our head end ASA5510 at our datacenter from 8.2.1 to 8.4.5. The ASDM was also upgraded from 6.2.1 to 7.1.(1)52. Under the old code, a remote ASA5505 connected via Easy VPN Remote showed 1 IPsec tunnel. However, after the upgrade, it shows 42 sessions. It would seem to me that each split tunnel network defined in the Easy VPN profile is being counted as a tunnel. Is it possible that I may have something misconfigured now that the code is upgraded?
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Mar 22, 2011
I am configuring remote access VPN on a cisco router 3845. Works fine.
I was looking for configuring session and idle time configuration for groups and eventually users.
I am using the following Cisco VPN remote access configuration :
crypto isakmp client configuration group mygroup
key xxx
pool mypool
acl 101
max-logins 3
banner ^CHelloo ^C
Is there any command in cisco ios similar to Cisco ASA vpn group 1 session-timeout?
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Mar 15, 2010
we just got several laptops that came with Windows 7 Pro 32bit installed, and we have installed the VPN Client 5.0.06.0110. The VPN client appears to connect to our ASA5510, but we are unable to connect to any machines on our network as it does on our XP machines.
Furthermore, we cannot ping any as well. Also, while connected the Windows 7 machine is still able to access internet site as if split-tunneling was configured, which its not! I've seen alot of people posting on the internet about the same issue, but I have not run into any resolutions that work.
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Feb 14, 2012
Is to possible to connect to someone's computer via remote desktop connection w/o them finding out what ur ip is?
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Jun 4, 2012
I have inherited the support of an ASA5520 running 8.0(3)12 code and I believe I have a pretty simple question here that I haven't been able to figure out on my own. I have a few users that connect to the box via IPSEC VPN client connections. They want to be able to leave up a RDP based connection, for monitoring purposes, for a most of the day, but thier RDP connection keeps getting discounnted after a few hours. The VPN connection never gets disconnected, just the RDP session running through it. I have another box running 8.0(4) code and they can leave up the RDP sessions as long as they like without getting disconnected from the server(s). I have compared the configs of both boxes and don't see any glsring differences in regards to the configuration that would cuase the RDP sessions to either to stay up or be disconnected after an inactivity type scenario.
What to look for in regards to identifying the timer that is disconnecting the RDP session after a period of time.
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Jun 20, 2011
We are trying to configure our 2106 wireless lan controller to expire wireless users sessions so the user is not remembered indefinitely. We are using freeradius to validate the users login information and passing back a "session-timeout" avpair but the WLC seems to be ignoring this value.
How to configure the session expiration time of wireless users on a 2106?
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Jan 19, 2012
We're having trouble trying to deploy 802.1x authentication on a brand new site.
Our primary and secondary ACS are located in Paris and the new site located in Toulouse, France. Both sites are connected through the WAN. Everytime a computer/user connects to this new site in Toulouse, ACS 5.2 sends a "5411 EAP session timeout" error message.
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Apr 20, 2013
I was at my computer when the desktop appearance and taskbar changed. I immediately opened task manager to see what program might have caused this and didn't see anything out of the ordinary. Then about 2 minutes later my desktop changed back to what it normally is. I then went and disabled remote desktop connections... I think that someone may have accessed my pc remotely, buy I wasn't able to catch them at it. Is there any way to review incoming remote desktop connections historically?
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Mar 1, 2013
I have a DIR-825 with 2.60VT firmware (rented from Videotron).
Even though the manual says the stateful firewall should have a timeout on connections of 240 seconds or 7800 seconds, all of my connections start at a mere 120 seconds. I'm having trouble with IMAP IDLE pushing e-mails because the connections timeout so quickly (before any stay alive can be sent). A connection to the e-mail server gets opened on 143 (Videotron) or 993 (encrypted - google, e.g.), and I see the connection on the Internet Sessions page, the timeout starts at 120. When it hits 0, the connection is no longer displayed (it is not renewed), and the IMAP IDLE ****s out because the server can't find the client (i.e. the connection has been closed). But it's not just on those ports or servers. ALL of my TCP sessions begin at a mere 120 seconds! Even for a home router, isn't this way too low?
confirm that their DIR-825, on the Internet Sessions page, shows initial timeout values of greater than 120 for a TCP connection? I would love to see a picture of that screen showing higher values. Does it start at 240? Do you ever see a connection start at a timeout of 7800?
I see no way of changing the timeout value. Is it possible to force connections on certain ports to begin at a higher timeout value?
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Sep 1, 2011
Per PCI & company policy all VPN users have a 12 hour session limit. They will disconnected after 12 hours regardless of use. Is there any way to send a message prior to the 12 hour limit to warn the users that they will be disconnected in x minutes? I'm running SSL VPN on a ASA 5520 ver 8.4(1)
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Oct 11, 2011
Is there any way to change a setting which causes a user logged in to the web browser interface (or connected via ssh) to have to re-authenticate. Im getting annoyed by being disconnected from the AP and having to re-authenticate.
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Nov 3, 2011
What the command to prevent a telnet session to the 4400 controller from timing out is?
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Aug 27, 2012
For guest clients , we have configured guest vlan and applied external web authenication on WLC 5508 , the session timeout value is 2700secons . When a client open a browser to internet page , wlc will redirect to URL and get the login page . After completed the login , he can go to internet page .
We find the iPhone and ipad clients will get the login page again ahfter ~ 5 mins , it is mismatch with session timeout value 2700 sec (45 mins) .
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Aug 15, 2011
Our company has installed ACS Version: 5.1.0.44.6 Internal Build ID: B.2347 with patches: 5-1-0-44-5, 5-1-0-44-6. The security policy of our company includes a password change every 3 months. Our programmers had written a script that allows us to do it. When testing revealed that the script does not work. This is due to the fact that it is not possible to enter the mode "acs-config". In determining the reasons it was found that to enter this mode there is a limit on sessions (6 sessions). When the number of connections becomes larger than 6 then the script does not work. The documentation says that the update is not active sessions is set with terminal session-timeout. In this case, the terminal session-timeout 30. But after 30 minutes of the session will remain active. It interferes with our script.
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May 6, 2013
what would be causing my management HTTPS session to a SF200-24 to suddenly timeout? I receive "The session has been timed out. You may log in again" few mins after logging into to switch.Sometime it happens within 45seconds, other times after 3mins, timouts are not consistent. And, i was not idle when it timed-out. My HTTPs idle time-out is set for 10mins.
I had a continuous PING going to managment IP, and it did not drop any pings when session timed-out.Interface stats are also clean. I tried IE, FireFox, Chrome and all are timming out.
I've changed the HTTP default idle-time out from 1 to 10 and my HTTPs stopped timing out. Management Access Authentication is cleary set for HTTPs, and the Idle-timeout for HTTPs was set for 10mins since install. Yet, adjusting the HTTP idle-timeout cleared the issue.
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Jan 25, 2012
I have an SG300-20 here for testing (firmware: 1.1.2.0, boot version: 1.0.0.4, language version: 1.1.1.6 English). Everything seems to work on it, except, that if I choose Radius authentication by mac address only, then the switch does not honor the Idle-Timeout and Session-Timeout attributes from the Radius server (freeradius).
The setup is the following: I have a no name access point plugged in to switch port gi1. The port gi1 is set up for Radius authentication by mac address only. The access point itself is authenticated, no problem with that. If I connect through the access point by (say) a mobile phone, it is authenticated, no problem. The radius server does send the Idle-Timeout and Session-Timeout attributes, I checked it by running "freeradius -X", both are set to 30 seconds. Then I turn off the wireless card in my mobile phone and check the dot1x users by "show dot1x users". My mobile phone's mac address remains there for 5-10 minutes, so the Idle-Timeout and Session-Timeout does not work.
Another way I could resolv this problem is by explicitely asking the switch to reauthenticate the user. Unfortunately there is no CLI command to do just that, I can do however a reauthentication on a port using "dot1x re-authenticate gi1" (for example). But it does not work as it is expected: the switch uses the stored mac-address to reauthenticate the user, so nothing changes on the port (unless something changes in the radius server). I think it should work like the following: remove the authenticated user from the port, and whenever that mac address makes some network traffic, then reauthenticate as if it were a completely new connection. BTW: it would work for me also if I could just remove an authenticated user from a port, but I did not find a command to do that.
As a last resort I can simply shutdown the port, bring it up again ("shutdown" and "no shutdown" in the interface config), then all users are removed from the port and they all mush reauthenticate. But it causes a network outage for a couple of seconds for all users on that port, on a busy access point it is quite disturbing, and it is not an elegant way to do this.
So my actual question is: is there a way to remove an authenticated user either automatically (Idle-Timeout and Session-Timeout) or manually from this switch?
I enclose the relevant part of the running config.
interface range gi1-2
dot1x host-mode multi-sessions
exit
vlan database
vlan 2-4
exit
[code]....
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Jul 30, 2012
When a client connecting to a specific AP (example AP01), after every 1800 sec uptime it will reconnect and join other unit AP (example AP02)Both AP physically installed distance is around 6 meters from each other. I conduct the testing where i get myself sitting in middle between these two APs.
01. If i disable settsion timeout this feature, or setting the seconds become higher value, what's the performance and security impact? Is it recomend to change the default 1800 seconds session timeout?
02. Is there anyway i can tweak on WLC controller to prevent the client after session timeout then associate with another AP. This will lead major performance impact as the client woudl possibility connect to the weak signal AP and effect on the performance.
These are the details for reference:Client detail
- Dell DW1520 wireless-N WLAN card, with firmware version 5.100.235.12
- CCX version 4 supported
- Layer 2 security is WPA2 personal with PSK.
- wireless radio an
Controller detail:
model is AIR-CT5508-K9
software version is 7.2.110.0
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Oct 7, 2012
I am able to establish a single VPN session on an ASA 5510. The network is as follows:Cisco 2600 router----> ASA 5510---->non cisco UTM----> LAN.Once another session is connected (same profile different username) is connected the first one disconnected.
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Jan 14, 2013
I have an ancient Alteon load balancer which only supports HTTP and telnet access. Our management people only allow HTTPS through the management firewall farm, and don't want to change this policy. So I need a low cost HTTPS to HTTP conversion, ideally on Cisco hardware like an ASA5505. It only needs one concurrent user. Is there a way to configure an ASA 5505 to terminate the inbound HTTPS seession and re-originate a HTTP management session to the Alteon? It looks to me as if the Clientless SSL VPN might do the job.Is there a way to do a SSH to telnet conversion on the ASA, or on a router?
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May 14, 2012
I have ASA 5510 with 8.2.4 and 8.0.x OS and all seem to have common problem of idle TCP connections not timing out. The host to host connections are coming over VPN tunnels. I have default timeouts on all the firewalls. I have tried changing global timeouts and as well as host specific timeouts using MPF but doesn't work at all ! The problem is when TCP connections are sitting idle in conn table for days and when connection limit of 50,000 conns reach the firewall starts behaving unpredictably dropping packets or unresponsive! I need the unused idle connections to timeout which is NOT happening either by changing global values or MPF.
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May 5, 2013
We have an asa5510 running as an SSL VPN gateway using one public IP address (e.g. 1.1.1.1) as the target IP address for the users.
Now we need to run a 2nd public IP address on the same asa5510 as target IP address for a different set of users, e.g. 2.2.2.2.
NAT is not working, secondary IP address is not possible, sub-interface is not the right way. Is this really not possible?
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Aug 11, 2011
I using cisco 837 for incoming remote access VPN connections with are working very well but I recently created one outgoing easy vpn connection and I have issue since that time. As soon as easy VPN is up and established successfully I lost remote VPN access to internal subnet.
Where is :
Internal subnet: 192.168.172.0/24
remote VPN pool 192.168.24.2-6
Take a look at config attached and point me at missconfiguration
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Mar 9, 2011
On wireless (lenovo tabletx61) I cannot connect through the intranet - no problem connecting through internet. When I manage to connect through intranet connection is dropped quite often.No problem connecting via Ethernet cables.
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Oct 29, 2012
I have a problem on a Cisco ASA5520 version 8.2(5). A customer has set up a syslog to keep tracks of tcp sessions made by vpn users. On the syslog we filter %ASA-6-302013 and %ASA-6-302014 log messages, respectively: Built inbound TCP connection and Teardown TCP connection. When the connection is made by a vpn user, at the end of the log line you see the vpn username which should be the same in both the messages for the same connection. I have verified that when a user, let's say UserA, disconnects from the vpn, their tcp sessions are not properly closed; if another user, let's say UserB, establish a VPN immeditaely after and gets the same IP address previously assigned to UserA, the log sessions are recored with UserA in the %ASA-6-302013 message and UserB in the %ASA-6-302014 message. I presume this is due to the fact the tcp sessions are not tore down when the first user disconnects and it looks like a bug to me but I didn't find it referenced anywhere. Is there a way to have all tcp session tore down when a user disconnects the VPN connection?
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May 26, 2011
Internet connection fails when desktop boots?I have a wireless internet router/modem. Netgear.The internet works fine via wireless for laptops, phones etc.Until i boot my desktop up that is connected via cable to the router it then drops the internet connection.The network is still showing as active but local only.If i open a browser it tells me that it cannot resolve the DNS server.if i switch the desktop off and reconnect the laptop it works.So its not the laptop or the router i have used a few different cables all the same.I'm using XP on desktop fairly fresh install with AVG antivirus and not much else on it but i have had the internet working since install so its some setting somewhere thats changed or needs setting up again.
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Jul 18, 2011
my internet connection drops out as soon as i power on my desktop. i have tried with 3 seperate modems my original modem a brand new modem and a mates modem and all 3 show the same problem when the desktop is off the internet connection is fine, i was wondering if this is just an EM surge
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Jun 3, 2012
I have setup an asa 5505 with multiple sub nets (plus license) and a vpn tunnel (ipsec) between this and an other asa on a second branch office (multiple vlans) . Now I need to route only two vlans from the first site to reach some of the second branch networks
let's call them: 1 branch
A-172.16.4.0/24
B-172.16.2.0/24
2 branch
C- 10.10.10.0/24
D- 10.20.10.0/24
E- 10.66.10.0/24
the tunnelis ok From A to CDE . but from B to CDE won't come up. pinging is unsuccessful as well as all other traffic. the connection profile is setup to have both A and B as local networks and A and B by the moment share the same access rules configuration.
logs show firewall 1 let pass and build connections, without denies, but remote firewall does not receive a single packet from the source ip from network B.
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Nov 26, 2012
ASA 8.2(5), uauth absolute timeout is disabled and inactivity timeout is set to 48 hours:
timeout xlate 48:00:00
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02
timeout sunrpc 0:10:00 h323 0:05:00 h225 1:00:00 mgcp 0:05:00 mgcp-pat 0:05:00
timeout sip 0:30:00 sip_media 0:02:00 sip-invite 0:03:00 sip-disconnect 0:02:00
timeout sip-provisional-media 0:02:00 uauth 0:00:00 absolute uauth 48:00:00 inactivity
timeout tcp-proxy-reassembly 0:01:00
timeout floating-conn 0:00:00
Users still get kicked out every 8 hours and they have to reauth. This is a logging message:
%ASA-5-109012: Authen Session End: user 'john', sid 839, elapsed 28801 seconds
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Mar 18, 2012
i want to create Remote IP Sec VPN on Cisco ASA5510.Problem is this 5510ASA is behind another 5520ASA and it dont have any public IP address on any of 5510 interface.if i do static NAT of ASA 5510 Private IP on internet facing 5520 IP Public POOL, then will VPN work on 5510 ASA? and what ports need to forward on 5520 for 5510 to become IPSEC VPN head end
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Dec 11, 2012
how to configure simple VPN access for a user to login to the corporate network and access the resource and get emails I do not want to use CA certificate for authentication instead a very simple method is what i plan to start up with the configuration step so i can test this out.
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