Cisco Firewall :: Single Session HTTPS Offload On ASA 5505?

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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Cisco Firewall :: ASA5510 - Single Timeouts Drops Remote-Desktop Session

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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Cisco Firewall :: ASA 5505 Firewall To Filter HTTPS Websites?

May 28, 2012

I have a cisco asa 5505 firewall. Is it possible to block secure websites in it like [URL]? I have already tried regular expression filtering but it filters only http traffic.

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Cisco Firewall :: ASA 5505 Disconnecting Inactive TCP Session?

Apr 15, 2013

My company has a DCS network that was previously segregated with a layer 3 switch and a handful of access lists.  However, there came this big push to segregate all DCS networks with Firewalls, so I purchased a 5505 and duplicated my simple access lists on the firewall and everything worked.  There is no NAT, just explicitly permitted traffic out and explicitly permitted traffic in.  However, there are some applications that connect and work fine for a few hours, then disconnect and the user must exit out of the application and go back into it, then it starts working again.  Previously with the Layer 3 Switch/access lists, this never happened.  Since I put the firewall in place, it has happened 3 to 4 times a day every day for the last week.

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Cisco Firewall :: Cannot Connect To ASA 5505 Using HTTPS?

Jan 6, 2011

I'm trying to access my ASA 5505 by https://192.168.1.1 but I can't. I'm using Windows 7.  I already have installed ASDM and I can enter in the box by ASDM.  I am preparing to reformat my PC and I'm afraid that I won't be able to access my ASA if I do.
 
The Mozilla show the message: An error occurred during a connection to 192.168.1.1.Cannot communicate securely with peer: no common encryption algorithm(s).(Error code: ssl_error_no_cypher_overlap)

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Cisco Firewall :: HTTPs Access From DMZ To Inside On ASA 5505

Jan 5, 2012

We have an ASA5505 UL bundel, updated with this license "L-ASA5505-SEC-PL=" to enable traffic from DMZ to Inside. No NAT or rules deployed for that yet.

On the Inside we have Exchange 2007 in a single server installation. The public url for smtp, ActiveSync, OWA and Outlook Anywhere is mail.company.se. There is a static NAT for outside traffic to access above mentioned services on inside. Now, on DMZ there is the WLAN for guests to access the Internet. How ever, our Smart Phones with WLAN turned on, cannot sync to the Exchange Server on the Inside! The DMZ gets IP-addressen from ASA on DMZ Interface with external DNS configured. How can I configure the ASA to achieve the function of ActiveSync from DMZ to Inside with the public URL from the phones?

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Cisco Firewall :: ASA 5505 - How To Configure DMZ Access For Ftp / Https Without NAT

Nov 18, 2012

I have a closed network that is not connnected to the internet, just other sites that we want to communicate with.  We have a cisco router connected to the outside interface on an ASA5505 and a cisco router connected to the inside interface on the same ASA5505.  I have an inside interface that connects our management LAN, five separate DMZ interfaces with a separate LAN (VLAN) on each DMZ interface and the outside interface that connects to the other sites.  Data is not allowed to mingle between the five DMZ's. 
 
Alll connections to the other separate nodes are handled with the router on the external interface.  IPSEC GRE tunnels have been established between all sites and BGP routing has been verified.  Pings are good between inside, dmz and external interfaces and between the DMZ's and the other sites, to include hosts on our local networks and hosts at the remote sites.  Inter and intra traffic is enabled.
 
When a remote site attempts an https connection, the initial ACK handshake makes it through the ASA5505, but the return SYN/ACK is being knocked down and I don't understand why (it is not because of ACL's, they are any any at this point).
 
Why the return SYN/ACK to the remote site isn't getting through the ASA5505 outbound.  Will probably have the same issue with FTP, but right now, just trying to solve one problem at a time.
 
ASA5505 is in routed mode, not looking to NAT since the IP addresses in the DMZ need to be reached by their real IP address.

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Cisco Firewall :: 5505 PAT With Single Public IP And Several Servers Behind Firewall

Nov 21, 2012

New to the ASA 5505 8.4 software version, but here is what I'm trying to do:
 
-Single static public IP:  16.2.3.4
-Need to PAT several ports to three separate servers behind firewall
-One server houses email, pptp server, ftp server and web services: 10.1.20.91
-One server houses drac management (port 445): 10.1.20.92
-One server is the IP phone server using a range of ports: 10.1.20.156
 
Basically, need to PAT the ports associated with each server to the respective servers behind the ASA 5505.  Is anything missing from this config? Do I need to include a global policy for PPTP and SMTP? [code]

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Cisco Firewall :: ASA 5505 SSL / HTTPS / ASDM Won't Work / Cipher Fail

Nov 21, 2010

Does my device not support enough encryption to get ASDM/SSL/HTTP working?
 
First time I've ever seen this...: 
 
%ASA-7-609001: Built local-host inside:192.168.1.10 %ASA-7-609001: Built local-host identity:192.168.1.1 %ASA-6-302013: Built inbound TCP connection 13 for inside:192.168.1.10/61194 (192.168.1.10/61194) to identity:192.168.1.1/443 (192.168.1.1/443) %ASA-6-725001: Starting SSL handshake with client inside:192.168.1.10/61194 for TLSv1 session. %ASA-7-725010: Device supports the following 1 cipher(s). %ASA-7-725011: Cipher[1] : DES-CBC-SHA %ASA-7-725008: SSL client inside:192.168.1.10/61194 proposes the following 11 cipher(s). %ASA-7-725011: Cipher[1] : DHE-DSS-AES256-SHA %ASA-7-725011: Cipher[2] : AES256-SHA %ASA-7-725011: Cipher[3] : DHE-RSA-AES256-SHA %ASA-7-725011: Cipher[4] : DHE-RSA-AES128-SHA %ASA-7-725011: Cipher[5] : DHE-DSS-AES128-SHA %ASA-7-725011: Cipher[6] : RC4-MD5 %ASA-7-725011: Cipher[7] : RC4-SHA %ASA-7-725011: Cipher[8] : AES128-SHA %ASA-7-725011: Cipher[9] : EDH-RSA-DES-CBC3-SHA %ASA-7-725011: Cipher[10] : EDH-DSS-DES-CBC3-SHA %ASA-7-725011: Cipher[11] : DES-CBC3-SHA %ASA-7-725014: SSL lib error. Function: SSL3_GET_CLIENT_HELLO Reason: no shared cipher %ASA-6-302014: Teardown TCP connection 13 for inside:192.168.1.10/61194 to identity:192.168.1.1/443 duration 0:00:00 bytes 7 TCP Reset by appliance %ASA-7-609002: Teardown local-host inside:192.168.1.10 duration 0:00:00 %ASA-7-609002: Teardown local-host identity:192.168.1.1 duration 0:00:00

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Cisco Firewall :: ASA 5505 - HTTPS Traffic Through DMZ Interface To Internal Exchange Server?

Apr 23, 2012

I have an ASA 5505 with the base license,When I setup the DMZ interface I had to add the deny access to the inside VLAN.  The DMZ works fine with WiFi on it, but user's iPhones can't get email unless they turn WiFi off.Is there a simple way to allow HTTPS traffic through the DMZ interface to our internal Exchange server which is NAT'd on the 5505's external IP?

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Cisco Firewall :: ASA 5505 - Redirecting Http And Https Traffic To Proxy Server

Aug 5, 2008

I have an ASA 5505 that I am using to connect my contractors to via an inside interface, the outside interface is my private LAN. I have setup on our corporate Proxy server to allow traffic from my outside interface of my  ASA to go to the internet without credentials BUT log internet activity. The question is I want to know if the ASA can send that http & https traffic to my proxy server and all other traffic to my default route? I want to be able to send all internet traffic to my proxy server. This will avoid me asking the contractors to place proxy credentials in their browsers.

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Cisco Switches :: Management HTTPS Session To SF200-24 Suddenly Timeout

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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Linksys Wireless Router :: WRVS4400N Breaks VPN Session During Https Connection?

Oct 6, 2011

here comes the incident description: WRVS4400N breaks established VPN session if I am trying to connect to any LAN host via HTTPS.

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Cisco VPN :: Single VPN Session On ASA 5510 Is Successful

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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Cisco Firewall :: ASA 5505 - Connect Single Internal Network To Internet?

Aug 23, 2012

I have configured an ASA 5505 to connect a single internal network to internet, it is not working. I have attached the config

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Cisco Firewall :: ASA 5505 - Setup Single Port Exclusion For Static NAT?

Sep 20, 2012

I have been using static NAT to map between a single server behind an ASA 5505 and a single public IP address. In other words, I've been doing this:
 
object network NAT_ME
nat (inside,outside) static interface
 
Now I would like to start using the clientless VPN feature of the ASA, so I of course don't want that particular port forwarded to the server. Is there a way to define such an exclusion? I've tried several things, including setting up a separate NAT rule to direct that port back to the ASA's interface, without luck.
 
If that is not possible, what configuration would I need to move to in order to get the behavior that I want? It is important that all (non-VPN) traffic is passed exactly as it arrives at the firewall (whether it is coming from internal or external), with the exception of changing the IP address (i.e., I need static port mappings for some of my services).

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Cisco VPN :: ASA 5505 - Remote Firewall Does Not Receive Single Packet From Source IP

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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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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Cisco Security :: ASA 5505 / HTTPS From Vpn Client To Internet Host Through Tunnel Ipsec-spoof?

Jan 17, 2013

we have a cisco ASA 5505 and are trying to get the following working:
 
vpn client (ip 192.168.75.5) - connected to Cisco ASA 5505
 
the client gets a specific route for an internet address (79.143.218.35  255.255.255.255     192.168.75.1     192.168.75.5    100) when i try to access the url from the client i get a syn sent with netstat when i try the packet tracer from the ASA i see the following:
 
<Phase>
 <id>1</id>
 <type>FLOW-LOOKUP</type>
 <subtype></subtype>
 <result>ALLOW</result>

[code].....

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Cisco VPN :: 5505 - Can Single Local User Belong To 2 Group-policies

Jan 13, 2013

I have a Cisco ASA 5505 that I've setup with an SSL VPN. This is for personal use, and I therefore don't have need for anything more than local authentication. [code]
 
I'd like to have one profile/policy where I only encrypt data going to my split-tunnel ACL, and I'd like to have one profile/policy where I encrypt all traffic.
 
The issue ive been fighting is - it doesn't seem like its possible to associate more than one group policy per user. If it IS possible - can you tell me how I associate both groups to my local account?

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Cisco Firewall :: ASA 5520 RDP Session Timeout?

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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Cisco Firewall :: Terminate Vpn Session On Asa 5510?

Apr 5, 2011

How to terminate a vpn session on the asa 5510, when u issue the command sh vpn-sessiondb remote?

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Cisco Firewall :: ASA 5550 - TCP Session Resets

May 1, 2012

Our users are using Xmanager to connect to a NNM connection which is going through a Cisco ASA5550 with 8.3. The session of Xmanager is getting terminated exactly after 1 hour and the users have to reconnect it again. How can we make the session to be up always, when I am bypassing the Firewall its always up.

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Cisco Firewall :: ASA 5585 / Identity Firewall With Single Forest / Multi-Domain

Dec 28, 2011

I have a question with regard to setting up the ID firewall on the ASA 5585 in a single forest, multiple domain windows network.Currently I have a semi-operational IDF at the top level but can't find users on the lower other domains, here is the setup:I have 3 domains.

[URL]
 
Both domains have a two way parent-child trust and I can look for users in AD Users/Computer on both domains.  I initially setup the ASA to look at domain1.test.com using an LDAP aaa-server per the IDF instructions, and then proceeded to configure the ad-agent.  I installed the adagent on the domain1.test.com domain controller configured the settings on that system and had no problem adding users to the firewall and getting functionality within domain1.  I looked to see if I could see domain 2 and domain 3 users and found none.  I went ahead and added the domain2 system to the adagent on the DC and the system says that it is up, but when I search for users is not pulling them from domain2.  Instead, it shows domain1 users as domain2user1.  I also configured another adserver in the ASA to search ldap on domain 2 to no avail.The cisco documentation states the following:•Before you configure even a single domain controller machine using the adacfg dc create command, ensure that the AD Agent machine is first joined to a domain (for example, domain J) that has a trust relationship with each and every domain (for example, domain D[i]) that it will monitor for user authentications (through the domain controller machines that you will be configuring on the AD Agent machine). Single Forest, Multiple Domains—All the domains in a single forest already have an inherent two-way trust relationship with each other. Thus, the AD Agent must first be joined to one of the domains, J, in this forest, with this domain J not necessarily being identical to any of the domains D[i] corresponding to the domain controller machines. Because of the inherent trust relationship between domain J and each of the domains D[i], there is no need to explicitly configure any trust relationships.Reading that it sounds like it should just work.  I had everything properly configured before I installed the adagent, but I'm guessing that there is a chance that you can't have the adagent on the top level DC and get to communicate with the lower level domains. 

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Cisco Firewall :: ASA 5510 / Multiple VLANs Behind Single Firewall Segment?

Feb 5, 2012

I need to create a firewalled segment that not only separates hosts from general population, but also from each other.  The solitary confinement of firewalled segments.I know that I could create a bunch of sub-interfaces, one for each host or group that needs to be isolated, but I'd really rather not have to do that if possible.  1) It could become a management nightmare between ACLs and sub-interfaces and 2) it's a waste of IP addresses.s there any way that I can create a bunch of separate VLANs behind the firewall and have them all terminate at the firewall, using a single firewall IP address for the gateway?
 
VLAN 1 - hosts 1.1.1.5 and 1.1.1.6VLAN 2 - hosts 1.1.1.7
Firewall DMZ Interface - 1.1.1.1VLAN 3 - hosts 1.1.1.8 and 1.1.1.9 

This way, the hosts are isolated and can't talk to each other unless they're on the same VLAN.I'm working with an ASA 5510 running 8.2.4(4).

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Cisco Firewall :: 5520 Single Firewall With 2 Core Switches

Jan 4, 2012

Two different WAN links get connected to the firewall via two routers.(Different ip subnets).I need to get this two wan streams seperatly to the core switches.Core switches sits.Active/Stanby senario. If the Active core goes down Stndby Core will have take over the traffic. My design is correct ,if not what do i need to change. ASA is 5520.

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Cisco Firewall :: ASA 5500 - PPPoE Session Duration

Sep 18, 2012

How can i determine the current PPPoE session duration on ASA 5500 Systems? If i use the different CLI commands like "show vpdn session state / show vpdn session pppoe state" the output says:

State: SESSION_UP Last Chg: 593595 secs.
 
The ISP is forcing a reconnect every 86400 seconds, so the value can't be the actual duration of the pppoe session. Does it only indicate the link duration to the attached modem or interface state? Is the only way to detect interruptions of the pppoe session with debug and syslog?

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Cisco Firewall :: Active Session Count Of ASA 5540 In HA?

Apr 15, 2012

We have configured our ASA5540 in active-standby failover.We are observing that current active session count is twice of session count before configuring HA. Earlier average active session was 50000 and now after HA it is around 100000. Failover configuration of both firewall are as follows
 
failover
failover lan unit primary
failover lan interface FOLan GigabitEthernet1/0
failover polltime unit 15 holdtime 45
failover replication http
failover link StateLink GigabitEthernet1/1
failover interface ip FOLan 10.3.3.1 255.255.255.0 standby 10.3.3.2

[code]....

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Cisco Firewall :: ASA 5510 Citrix Session Reliability?

Sep 11, 2011

My company has a cisco ASA 5510 and we have a Citrix remote desktop solution. In a nutshell I have users from outside our network accessing a virtual Citrix NetScaler inside our DMZ. There is a session reliability feature enabled on the Citrix solution. Session reliability uses tcp port 443. A user from outside the network connects to our network and is handed a virtual desktop to work with. When a remote user is working on their virtual desktop and there is a network connection issue the end user loses network connectivity for a brief period of time (in most cases just seconds) then the Citrix session reliability feature takes over and holds in a buffer all data destined for the end user . Once the connection is re-established then the buffer is emptied and the session goes on like before and the end user is able to use the virtual desktop. At least this is the way it should work.

In our case the connection never re-establishes between the end user outside the network and the NetScaler in our DMZ. We have been working with Citrix Support and they believe the issue is in our firewall. We have taken packets captures with Wire shark and we can see when the network failure occurs the NetScaler in the DMZ is holding information in a buffer and trying to communicate with the remote end user outside our network via packets and TCP port 443. We can also do the same packet captures from the end user computer and see where it is not receiving any packets from the NetScaler in our DMZ. The fire wall has an access list allowing any traffic in the outside port destined to the NetScaler Public IP on port 443. Then once in the firewall outside port we have a static rule pointing to the NetScaler IP in the DMZ.Everything is working quite well until we need to rely upon the session reliability. We have tried altering the TCP & Global Timeouts options in the firewall via the ASDM with no luck.

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Cisco Firewall :: ASA5510 HTTPS Filtering On CSC SSM-10

Mar 18, 2013

One of our customers has an ASA5510 with CSC SSM-10 security module. The software version of the module is 6.6.1125.0.Is it possible to do https filtering with this module ? The customer is complaining that this is not possible...from Cisco I've read the following:

• HTTPS Filtering
– Able to allow or block HTTPS traffic.
– Supports group-based and user-based HTTPS policies.
– Includes URL blocking/URL exception list support for HTTPS domains.

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Cisco Firewall :: ASA 5510 HTTPS Filtering Bog Down

Feb 15, 2012

I am running a Cisco ASA 5510 with Trend Micro Interscan. We have it set up to filter https except for a handful of sites. It is filtering the ones we don't want ie: facebook, and youtube. Though it is causing all other https to slow to a crawl. Therefore some sites it times out on us. What should we be looking for to change so it isn't slowing the allowed sites down?
 
Version numbers 
ASA - 8.4(3)
ASDM - 6.4(3)
Trend - 6.6.1125

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Cisco Firewall :: ASA 5520 / Failing To Get To Outside Webpage - Session Being Reset

Jun 5, 2012

I have an ASA 5520 for my firewall. (ver 8.0(4))I have an external hyperlink that works from dsl at home but not from behind my corperate firewall.When I filter my real-time log viewer for this destination address I see the build up and immediate teardown of the session.The log indicates the teardown was initiated from inside.The informational alerts are
 
Built outbound TCP connection 726440542 for outside:201.116.168.172/6666 to inside:172.16.x.x/3586 (65.204.x.x/52001)
Teardown TCP connection 726440542 for outside:201.116.168.172/6666 to inside:172.16.x.x/3586 duration 0:00:00 bytes 77 TCP Reset-I
 
Reset-I means that something (the firewall or my pc which is the source) is telling the firewall to end the session.

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Cisco Firewall :: Unable To Open SMTP Session Through ASA 5512-X?

Sep 20, 2012

Just doing some basic testing before we replace our ancient PIX 515E with a new 5512. I have a mini lab set up following the diagram below, although I am unable to telnet through to the mail server's netcat listener on port 25 TCP. I can ping all the way outbound from 192.168.101.1 to 10.0.0.2, and the 10.0.0.2 machine shows it is translated properly to 200.225.117.1.
 
NAT and access rules are as follows:
  
object network mail
host 192.168.101.1
description Mail relay
access-list inbound extended permit ip any host 200.225.117.1

[code]....
 
EDIT: Somehow the new global access rule is involved. When adding a permit any any in there I can get to the mail server no problem. When I remove it but leave in my permit ip any any on the outside interface, I am denied?

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