Network Security

I would like to know if I can reset the TTL value for all IP packets to 64 as they exit my network through an ASA5505 to the outside network. Can this be done on a 5505? If not do you have any suggestions.

I have the following devices:I have a PIX 515e (8.0 (2)) and 1841 router (12.4(25)).I had the following setup working without issue:[Internet] <-----> PIX  <-----> 1841  <-----> [LAN]I then tried to introduce VLANs and now I can not reach the Interne...

Hello,I have problem with my IPS module in ASA5510. After central power failure the module stopped work. Status of module is  "Unresponsive" (over show module command). All attempts to get it live ended with this status. I tried "hw-module module 1 r...

Hi,I am having a problem with address translation on a pair of Cisco ASA firewalls when they failover.The current setup has 2 x Cisco ASA5520 firewalls configured in active/standby failover. I have address translation configured on the ASA using both...

I have in my ASA, config like this:nat (inside) 1 access-list ACL1nat (inside) 4 access-list ACL4nat (inside) 3 access-list ACL3The document *here* says "Policy dynamic NAT (nat access-list) — In order, until the first match. Overlapping addresses ar...

Dear All,  I have configured remote access VPN on my ASA-5510 Firewall 8.4(2) using DynDNS as I do not have static IP addresses. Everything was working fine but now my users cannot access the VPN tunnel from outside. (No changes have been made on the...

HI all.has anyone done this ?i'm aware to the limitations :•In transparent mode, you must specify the real and mapped interfaces; you cannot use any. •In transparent mode, you cannot configure interface PAT, because the transparent mode interfaces do...

I have a number of 18xx, 19xx, 28xx and 29xx isr's.  I am wanting to know if someone makes any configuration changes to any of them.  I have used what's up gold to send gather custom snmp traps and send email alerts when this happens and that works f...

Hi everybody,i want to block teamviewer using cisco ASA-5585 asdm..any one have idea how to block it using regular expression...RegardsSher

Hello,I have a question regarding the order of the rules in a firewall.The question is whether the order of the rules affects the firewall performance.All I could find in the community were old discussions, which claimed that placing the most used ru...

Hi,I bought Cisco ASA 5505 firewall for my new home / office. I have practically no profound expertese with firewalls and specially no with ASA programming. I know basic terms and mechanics, but more sophisticated solutions are out of my knowledge. M...

Hi, i would like to know how often does Cisco release updates for the Signature engine for the IPS appliances? I was not sure to make the auto update from Cisco.com to be every-day, every-hour or once a week?Also can you advise me of the recommended ...

is it possible to intercept a dns lookup on a dmz and direct it to an internal server.I have a wireless controller for guest access on a dmz. to authenticate, the wireless controller intercepts the first get syn and redirects it to a guest manager on...