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

Jan 6, 2011

I'm trying to access my ASA 5505 by 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 communicate securely with peer: no common encryption algorithm(s).(Error code: ssl_error_no_cypher_overlap)

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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 :: 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 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 :: 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 :: 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: %ASA-7-609001: Built local-host identity: %ASA-6-302013: Built inbound TCP connection 13 for inside: ( to identity: ( %ASA-6-725001: Starting SSL handshake with client inside: 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: 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: to identity: duration 0:00:00 bytes 7 TCP Reset by appliance %ASA-7-609002: Teardown local-host inside: duration 0:00:00 %ASA-7-609002: Teardown local-host identity: 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 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 - connected to Cisco ASA 5505
the client gets a specific route for an internet address (    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:


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Cisco VPN :: 5505 - Which Firewall To Connect VPN To

Jan 19, 2012

I'm building a dual firewall solution for exchange. Currently, I also have people connecting VPN to the PIX 515E.
Internet ==vpn== 5505 == LAN
Looking to set up
PIX515E ==dmz== Edge server == ASA 5505 == LAN
In a setup like this, which device should I have people connect VPN to? The pix will be the only device directly connected to the internet. Everything else will be natted.

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Cisco Firewall :: ASA 5505 - Any Connect And SSL Web Server

Feb 6, 2013

I have a Cisco ASA configured for Any Connect clients.  I also want to pass 443 traffic back to an internal web server, but not sure if I can do this since the Any Connect clients are already connecting over 443 to the ASA, right?

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Cisco Firewall :: Cannot Connect Between Two DMZs On ASA 5505

Feb 29, 2012

I'm trying to connect to something through an ASA.My traffic is coming in on a DMZ interface (security level 0) and going to something on a DMZ3 interface (security level 50).
From the GUI I configured NAT exemption from the source network (on DMZ) to the destination network (on DMZ3) therefore following the guidelines that the translation is set up from most secure to the least secure interface
 I have no network connectivity to the host I need to get to From the GUI I removed the NAT exemption rule and configured a static NAT translation instead, translating the source (on DMZ) to itself (on DMZ3) - still no joy.The ACLs in place are fine, if I use the packet tracer tool, it fails at the NAT stage; [code]

I can't see what's wrong here. I've configured static NAT or NAT exemption between inside and outside or inside and DMZ many times over the last 10 years but can't work this out.the only thing I can thing of is that there might be a bug that affects DMZ to DMZ NATing, as everything between inside to DMZ and DMZ to Outside works fine.

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Cisco Firewall :: Connect Inside To Outside In ASA 5505?

Apr 2, 2013

I have a test ASA 5505 with the setting below:

How can I connect to the internet (Vlan 1 to VLan 11)

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Cisco Firewall :: 5505 Cannot Connect To Internet

Feb 27, 2011

I set up an ASA 5505 at home through PPPOE connection.  The ASA seems to obtain an IP address correctly.and I can ping a public ip address using the outside nic, but not the inside nic. I saw the error message when I ping:  No route to ff0213 from fe801bc2b1288cd5bc1.  As a result, I cannot connect to the Internet.

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Cisco Firewall :: 5505 VPN Client Unable To Connect

Feb 13, 2012

We have a cisco asa 5505 on which we have setup a group VPN. The VPN connections from all cisco vpn clients works fine except one. The keep getting the below error

"Secure VPN Connection terminated locally by the client. Reason 412: The remote peer is no longer responding. Connection Terminated".

Not sure why only one client won't be able to connect. The version we are using is 5.0.02 for VPN client.

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Cisco Firewall :: 5505 / Can't Connect To All Sites Outside From Inside

Dec 20, 2012

For some reason there are some sites that I cannot access websites from inside interface.One such example is where I am receiving this message in the browser:The connection has timed out   The server at is taking too long to respond.This has "suddenly" happened, and so I am wondering what others have done when such things has happened. My outside has a dhcp-IP, and I have noticed that this address had changed, so I corrected this in my router settings.ASA version is 5505
These are my settings:

: Saved
ASA Version 8.4(2)
hostname ciscoasa
enable password 123412321 encrypted
passwd 1231231 encrypted


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Cisco Firewall :: ASA 5505 - Unable To Connect To The Internet

Mar 8, 2011

I'm unable to have any internet connection for my new setup.
here's the overview.
Current setup is
Internet -> Router -> PIX 501 -> Switch -> clients
Internet -> static ip given is -
Router -> Static ip assigned for NAT/External is, Local ip is
PIX 501 setting ->
IP to Router, According to router screen is, but not sure what settings are done in the PIX itself as I'm unable to access it.
local ip is
Clients - >
Old setup is working fine and connected to internet. for the new setup, as i do not want any downtime for the old setup.
As you can see, there are two firewalls connected concurrently to the router. I've configured it this way.
Internet -> Router -> ASA 5505 -> Switch -> clients
ASA 5505 setting ->
IP to Router NAT/External/ Outside Interface, (Or do i set as,
local ip/ Inside Interface is
Clients - >
some setup details.
security policy, NAT, set to default. routing is route outside 210193.34.6
I'm unable to access after a week of troubleshooting.

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Cisco Firewall :: Connect 5505 To 5510 Direct Via Crossover?

Mar 23, 2013

A bit of a straight forward question, is it possible to connect a 5505 to a 5510 direct via a crossover or do you need a switch inbetween capable of trunking?

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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 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 - Create Access Rule To Connect To System Using RDP?

Mar 6, 2012

Just started using our ASA 5505 v8.2 (1) Trying to configure the ASA appliance to allow access into an internal resource (i.e want to be able to RDP into a system behind the ASA from the internet).I have used a static NAT:

static (inside,outside) netmask
 access-list OUTSIDE extended permit tcp any host eq 3389
When I view the logs it is reporting the following:Inbound TCP connection denied from (external IP) to /3389 flags SYN on interface outside.Been pulling my hair out with this one as I believe I have everything configured correctly.

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Cannot Connect To HTTP / HTTPS / FTP

Aug 27, 2012

I have reset my wireless connection numerous times, rebooted, tried wireless and wired and continue to have the same result - great signal; cannot connect to any webpage. Ran network diagnostics and everything seems to check out except the "DNS Server."

Microsoft Windows XP [Version 5.1.2600] (C) Copyright 1985-2001 Microsoft Corp. C:Documents and SettingsMarcy Musselman>ipconfig /all
Windows IP Configuration Host Name . . . . . . . . . . . . : MARCYS Primary Dns


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Cisco Firewall :: ASA5540 Port 80 Redirect To Https

Dec 21, 2011

Windows IIS server configured behind a Cisco ASA 5540 listening on port 443 currently. Access-list and static translation configured. I have been ask to redirect all port 80 calls to port 443 for this web site only at the firewall. I have suggested moving it behind our content switch with negative results. Can we do this at the firewall level? how to accomplish the redirect for a single site. 8.2.4 is current code

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Cisco Firewall :: ASA 5550 Port Forwarding For HTTPs

Nov 27, 2012

I am setting up an ASA 5550 8.4 and asdm 6.4. Last thing I am missing is to get the static nat rule done for https. Done it with asdm and cli and always end up with "error: nat unable to reserve the port". Looked around the Net so far and changed the http enable port to 4433. ASDM access is only configured for inside and mgmt port. Disabled under RA VPN all checkboxes in clientless ssl and any connection profiles since IKEv1 is used for vpn access.

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Cisco Firewall :: ASA 5510 / Certain HTTPS Website Timing Out

Sep 12, 2011

Running ASA 5510 with code 8.3 in it.We have our few https portal and OWA websites in HO.We access these sites from the network behind the ASA.All works perfectly fine.
In order to have control on internal network traffic we placed a web-filtering device (Fortigate) in transparent mode.To start with of we haven't blocked anything via new box but https portal and OWA stopped working from certain computers.At the same time other https sites were reachable from the same computer/s.We checked that website was tracable using traceroute from ASA,Fortigate and even from interal computer(from the one which it is not opening).This behaviour is random.

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Cisco Firewall :: HTTPS Filtering In Internet Explorer With CSC-SSM-10

Jun 28, 2011

I upgraded MY ASA IOS with 8.4.2 and CSC IOS with 6.6.1125.0 .
Then after HTTPS filtering fine with Firefox broswer but not with IE.
In URL blocking window i configured Public IPs of some https web sites then URL blocking working with IE.

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Cisco Firewall :: 2851 HTTPS URL Blocking Using Class Map

Aug 3, 2011

I have a request for blocking urls using a class map. I have made this work with HTTP, however it does not work for https. This is a 2851 router with IOS Version 12.4(15)T7. I see i could use the command "match protocol secure-https" however this does not let me specify any specific urls.
Does a new IOS version will support what I'm trying to do? Or if there is another way?

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Cisco Firewall :: ASA 5510 Filters URLs In HTTPS?

Nov 22, 2011

My company uses a pair of 5510 ASAs as the gateway to Internet. I once configured policy-map to filter certain webpages (facebook, twitter, ...etc) and they work fine. However nowdays those websites all support HTTPS. In the https the URL seems encrypted so can't do regex match... Is there anyway that I can still block those webpages?
Another two ways I can think of are

1. Block IPs (don't really want do this unless absolutely necessary)

2. Block DNS for the URL (however they can work around by setting static DNS entries)

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Cisco Firewall :: Trying Configure ASA5505 (8.4) To Allow HTTPS On Two WAN Ports

Sep 14, 2012

I have an ASA 5505 running I've configured three WAN interfaces and have assigned failover on one of them (we have two ISP's, and a total of 3 static IP's in 3 different subnets).  I've noticed that all the traffic is flowing through only one of the three interfaces, but I need to allow incoming https traffic on the second WAN port so I can access our Exchange server (we already use https on the first WAN port to access another server).
[code] WAN1 is the default outgoing route and we've configured several incoming services on it (smtp and https for example) and appears to be working properly as mail is coming and going and users can access the RDS gateway.I need to configure WAN2 to accept https traffic and send it to our Exchange server to enable OWA (webmail) access.I've configured the same Access and NAT rules on all three WAN interfaces  for smtp (but I suspect only the first one is currently functioning at  this point, I'll test it next chance I get). I thought all I'd have to do is configure an access and NAT entry on WAN2 (same as on WAN1), but direct the traffic to the OWA server instead of the rds gateway server, but it is not working.
In the realtime log I can see that it appears to be receiving the traffic on the WAN2 IP, but seems to be passing this through to the inside via the WAN1 interface.

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Way To Connect To Https Sites With Firefox

May 7, 2012

WIth Chrome it does work although a bit slow. With IE as-well.Had the problem with FB as-well allthough that i could cancel with allowing it to connect.Gmail doesnt.Production Security Services and the certificates seem to cause problems.Searched the internet; tried a scan, checked the date, activataed the SSL and TLS in the browsercertificates, the server and organisations names.

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Cisco Firewall :: ASA5520 Cut Through Proxy HTTPS Concurrent Connections

Jul 29, 2012

What are the limitations on the max number of concurrent HTTPS connections when using Auth Proxy for HTTPS traffic on a Cisco ASA 5520.
1) What is the max number of concurrent Authentications that the ASA can perform (HTTPS)?

2) Once Authenticated. What is the max number of concurrent HTTPS Authenticated connections to the back end HTTPS server.

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Cisco Firewall :: ASA5510 / Block HTTPS Traffic In CSC Module?

Dec 15, 2011

I am having an ASA5510 with a CSC-SSM-10 module. I am able to block http traffic through the ASA but cannot block https traffic through it. Need to block https traffic using the CSC module.

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