Network Security

Cisco ASA 5580 Arp Collision Errors

Dears,I am receiving allot of Errors "%ASA-4-405001: received ARP collision from IP/MAC on interface dmz1 with existing ARP Entry IP/MACWhen i checked this MAC address in the same firewall it shows too many IP Addresses.What could be the reason ?Than...

Resolved! Recover VPN keys and user passwords on ASA5505. Is it possible?

Hi All.I'm just wondering, is it possible to find out or recover the passwords for users and pre-shared key for tunnel-group? The VPN connection was confiigured on ASA5505 before me, but no login details were left.Thanks

Resolved! Simple NAT of inside interface from outside

Just when I think I've got my head around nat, global and static commands i find myself struggling to get this 'simple' config working...I have a pretty default config:interface Vlan1 nameif inside security-level 100 ip address 10.20.30.50 255.255.25...

Wanting to see logging for ASA 5510 Permits

I have a rule which permits traffic to a web server and logging is enabled. But when I go to syslog I am only seeing traffic which has been denied. What needs to change to be able to see the logged traffic on permit rules? Thanks.

Updating ADSM

Hello,I'm have upgraded our ASA 5510's from 7.0.8 to 8.4.3 and now I just need to do the ASDM, but get this error? The bin file has been uploaded:configure mode commands/options: disk0:/asa708-k8.bin disk0:/asa843-k8.bin disk0:/asdm-508.bin ...

Resolved! ASA 5505 URL Filtering using URL Filtering Server

Hi Experts , I have come across articles mentioning that URL Filtering can be implemented by using ASA 5505 with URL Filtering Servers. But Websense and other Web Filtering Servers are paid ones ? Are there any free solutions available ? What exac...

ASA 5510 AIP-SSM Layer 2 Mode

Hello,It has been suggested to me that I could use the ASA5510 with an AIP-SSM module to perform full IPS functions in layer 2 only mode behind a Microsoft TMG server firewall.I don't require NAT, or any other routing function, just the IPS function....

Resolved! Strange Entries in ARP Table

I need some advice on this topic. I am seeing strange entries in my ARP table on my ASA 5510. We do not use any static ARP on the firewall at all. There are several dynamic arp entries being created that are not local to my network, yet they show ...

Resolved! Failover FWSM Primary

Hello,I have a FWSM in Active/standby mode. My primary failed and i got a replacement. At present my standby FWSM is active and Network is running fine, I want to insert the new FWSM in the chasis, once it is inserted both will be active because ther...

FWSM IOS

Hello Friends,I wanna FWSM IOS, when i go on cisco website to download there is no 3.2 (5) in the list, From where i can get it?????When i try to pull the IOS form the FWSM itself it give the error source file in use and also ERROR writing to TFTP. ...

Multiple public IP addresses

ASA newb here. This question has been asked before but the configurations seem to be different so they don't really answer my question. I think mine is pretty simple but I can't find a clear "this is what you do" answer. I've been reading the Cisc...

Unable to telnet on port 143 on the public ip of the server

I have a mail server behind a firewall ( ASA 8.3 ), and I have made the configuration in order to telnet on port 143 ( natting and access rule ), but when I try to telnet to the server from the inside ( telnet on the private ip ) I get the following ...

NAT and perimeter firewall

Hi,I am trying to access my work network on ports 5246 and ports 5247 but cant seem to.this is the setupAP (5246, 5247) -----Internet-------ISP router---permiter firewall----internal firewallI have nat'd a static ip on my firewall to a internal addre...

Resolved! ASDM access through s2s tunnel group on ASA5510

For years now we've had an ASA5510 running an old version of ASA/ASDM (7.0/5.0) and couldn't access ASDM through a modern system with a recent JRE, so we didn't bother with this.However, we've recently upgraded ASA/ASDM for purposes of adding failove...

Setting up failover mode on to ASA 5510's

Hello,I've been giventeh task of adding a second ASA 5510 to a live ASA and making sure that the active/standby failover works, has anyone done this, do I need a crossover cable? I wondered if there is a simple guide you may know of?Thanks

Network Security

Forum Posts

Cisco ASA 5580 Arp Collision Errors

Resolved! Recover VPN keys and user passwords on ASA5505. Is it possible?

Resolved! Simple NAT of inside interface from outside

Wanting to see logging for ASA 5510 Permits

Updating ADSM

Resolved! ASA 5505 URL Filtering using URL Filtering Server

ASA 5510 AIP-SSM Layer 2 Mode

Resolved! Strange Entries in ARP Table

Resolved! Failover FWSM Primary

FWSM IOS

Multiple public IP addresses

Unable to telnet on port 143 on the public ip of the server

NAT and perimeter firewall

Resolved! ASDM access through s2s tunnel group on ASA5510

Setting up failover mode on to ASA 5510's

Meet and congratulate the February 2023 Spotlight Awardees!

Renew.cisco.com just got refreshed, and it will make your life easier!

Announcing Resources That Guide You to Success

FMCv migration to FMCv migration without losing configuration

High CPU load at the FMC (7.0.4) caused by python3 processes

Can't login to FTD GUI

Connect with anyconnect to ftd internal interface eg. guest-wlan

[NetAcad] CyberOps VM Can't work, recently.

LOCAL Server Group Account Lockout

Disable SSH v1 and telnet on FTD via CLI or FMC?

Changing session timeouts, logging/syslog, etc. on FMC?

ASA 5506-X missing FirePOWER tab

Using TCP port of Syslog and FTD and local logging?