Network Security

We are a smaller company so IT resources are limited.  My question is more in regards to updating the machines themselves.  I have browsed the community and such for answers and I really have not gotten any type of answer.  Bottom line, is it best pr...

Hi, Im currently studying HTTP MPF (ASA feature) , im just wondering about the difference between dropping-connection and reset (TCP) can you please tell me how it drop and how it reset ? ?? specific process of it ( eg, TCP handshake, etc)thanks in a...

I just recently updated an ASDM image on a 5510 and after connecting to the device the icon disappeared (there was still a generic placeholder there).  I'm a bit OCD about it so I unpinned it and tried to repin it to get the icon back and I no longer...

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...