Cisco :: ASA 5505 Licensed Limit For SSH Sessions?
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.
I thought that in the past I had problems with my ASA5505 because I had to reboot a number of times, now that I have logging enabled I can see the following: -Deny traffic for protocol 17 src inside, licensed host limit of 10 exceeded.Does this mean that I can not have any more than 10 inside host going out of the outside interface at any time, if not what this means and how I can solve it.
I've looked at the forum posts and the document post, and I understand the explanations. My question is, under system administration>max user session global settings, would setting a timeout (say 1 hour) purge these sessions?
Under access policies, I am not enforcing max concurrent sessions per user, due to some of our devices using a generic log in. But if I understand the explanation, and my understanding might be wrong, then setting an expiry timeout should purge the accounting sessions, right?
We are using ACS 5.1 and from time to time we are getting a warning saying that the active sessions are over the limit (250000). It is just a warning, so my assumption is that its not a big deal, but how do we keep from getting the event, or prevent the event?
I have recently enabled the SMTP alert function in ACS 5.3. It seems to work well for most of the alerts. One thing though, the active sessions are over limit warning that comes up every so often. I know it is not impacting operations and it is ACS's way of clearing out sessions that had no accounting stop, but how do I disable this alert from being sent by e-mail from ACS 5.3?
i have a client who needs to establish a VPN tunnel from his satellite office (Site A) to his corporate office (Site Z). His satellite office will have a single PC sitting behind the ASA. In addition, he needs to be able to VPN from his home (Site H) to Site A to access his PC.The first question I have is about the ASA 5505 and the various licensing options. I want to ensure that an ASA5505-BUN-K9 will be able to establish the site-to-site tunnel as well as allow him to use either the IPsec or SSL VPN client to connect from Site H to Site A. Secondly, I would like to verify that no special routing or configuration would need to take place in order to allow traffic not destined for Site Z (i.e., general web browsing or other traffic to any resource that is not part of the Site Z network) to go out his outside interface without specifically traversing the VPN tunnel (split tunneling?)Finally, if the client were to establish a VPN session from Site H to Site A, would that allow for him to connect directly into resources at Site Z without any special firewall security rules? Since the VPN session would come in on the outside interface, and the tunnel back to Site Z goes out on the same interface, would this constitute a split horizon scenario that would call for a more complex config, or will the ASA handle that automatically without issue?
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.?
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?
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.
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
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.
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.
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
I have two WS-C3750X-48T-S which is "IP BASE" licensed, which are connected as stack.I need to use Policy Based Routing (PBR) to direct Vlans to two different gateways, and command "ip policy route-map" which is supported only in C3750-IPSERVICES license.Do I need upgrade only master switch with Cisco IOS IP Services - product upgrade licenseMfg. Part#: L-C3750X-48-S-E, or both switches need to be upgraded?
I am planning to buy a router for my hotel and I would like to know is it possible to limit the bandwidth limit to the guests? And the admin computer can utilize the maximum speed? it it possible to create a login page paper when some one enters my wifi connection?
need to know the OSPF best design. I have a customer currently running their OSPF only in two area. Area 0 is provider reside and area 1 reside 700 hundred over of router including HQ router and remote branch router connecting to metro-E 10Mbps networks. Is this design have any weakness? Area 1 about 800 hundred router reside in, the HQ model is cisco router 7200 and remote end is cisco router 1841.Let's say they want a solution, for 3G remote router connect back to the HQ using Lease line with a fixed IP. Using DMVPN and OSPF communicating back to HQ. What should we aware when designing and implementing for the OSPF best practice. They have 700 hundred over remote branch need to terminate back to their HQ. I read cisco recommend an area should not be more than 50 router and per-area no more than 28 area.
What is the maximum allowed number of BGP sessions on Cisco platforms sup720 BXL and 7200 G2? Particulaty what are these numbers if BGP sessions are under MPLS vrf (i.e. maximum number of BGP session per vrf?).
the customer has a problem with LMS 3.2. This software doesn't terminate ssh sessions created by LMS on ACE. All ssh sessions still exist on ACE, so no new ssh session can be created until the administrator manually clear these session on ACE.
I've got a problem with an ASR1004 running "asr1000rp2-adventerprisek9.03.02.00.S.151-1.S.bin".
When I'm performing extended ping tests using a tclsh script i'm geting this error message:
ASR_X1A2#ping 172.27.1.250
% Authorization failed.
When i'm pinging 12 diffrent destinations this happens to about 3 of them.
Checking the logs I found this:
Apr 24 19:42:56.071: %SSH-4-SSH2_UNEXPECTED_MSG: Unexpected message type has arrived. Terminating the connection
In my entire backbone this is happening only in this equipment, I've checked the connection between my ASR and the TACACS and it's OK, no packet loss. CPU and MEM are OK too.
Cisco Works (LMS 3,2) is not closing SSH sessions to a Cisco ACE module, I see the following thread and tried the workaround to no avail.
[URL]
I have also seen the following caveat (CSCtz42393) but this seems to be LMS 4.x, would this be 4.x and below or do I need to find the equivalent LMS 3.2
Router is running with IOS 12.4(24T) and we are having problems like file download stalls, some emails not being send or received. CBAC is enabled on this router with default values. MTU is also the default value. This problem has started all of a sudden. seeing lot of errors in the logs as below:
Oct 27 16:47:52: %FW-6-DROP_PKT: Dropping smtp session X.X.X.X:4443 Y.Y.Y.Y:25 due to Stray Segment with ip ident 25800 tcpflags 0x5014 seq.no 288975356 ack 3363647737*Oct 27 16:48:31: %FW-6-DROP_PKT: Dropping http session X.X.X.X:2020 Y.Y.Y.Y:80 due to Stray Segment with ip ident 1472 tcpflags 0x5011 seq.no 2686554796 ack 4275837539
Someone told me the commands, but I can't remember them. Have a router (2801) at the end of a highly utilized T1 link/router. How do I protect it so my SSH and/or Telnet sessions will get serviced if the router is real busy.
while traversing through Cicso ASA Firewall 5520,VPN sessions are disconnecting.In Accelissts for VPN-Outbound traffic from LAN to Client VPN ,we have allowed all Ports.Is there any inspection Rules are cause for this issue. In ASA Firewall,presently the inspection rules are [code]
We are using ACS 5.1 in our network. We have created users and grouped them as per the requirements. We want to restrict the user sessions in the network. A user should authenticate and able to access a network resource. But when he is active with that session, we need to block him from another successful authentication. We want to avoid multiple users using same user credentials for logging into the devices. whether this can be achieved by making configuration changes in ACS.
I have DSL line that gives 7mb down and 768k up. I have 2 users running win7 RDP session and after a few hours the session is unusable its so slow and then eventually it hangs . don't know where to start.
I am having a recurring problem with tcp sessions timing out / getting reset. I'm using the DIR-655 with PPPoE on a Qwest DSL line. Everything appears to be working fine (including my ipv6 tunnel) except for this issue where my long running ssh & database connections are being reset after a period of time.Currently have 2.03NA loaded, tried using 2.07NA but couldn't get ipv6 working correctly with the newer version.
