Network Security

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

Resolved! NAT question on 8.4

If I have servers on a DMZ that use REAL public IP's, do I need to NAT them to be reached from outside like I would for a server that is on the inside that is routed? Say my inside is 192.168.100.x, and I have a server with 8.1.8.12 as the IP inside,...

documents

HiI need to know regarding some concept such as.How to find if there is any dhcp spoofing, To find which are the ports opened on firewall. etc.Please provide some documents regarding security.

Upgrade Asa 5510 from 8.0.5 to 8.4.3 ?

Hi all... I finally upgraded my RAM to 1gb and I can move on to latest sotware for my asa Till now, I've been stucked to 8.0.5 , and now I need to upgrade to latest 8.4.3 version.I have done a little search, but I want advice from you guys and guru's...

Resolved! Firewall ASA 5505 (Transparent) - Filter with hostname

Hello,I have a question about filtering with Asa 5505. Customer asking me to configure the possibility to filter traffic between inside and outside interface using hostname of PC instead of IP. Is it possible ? Using inspection ? Is there an alternat...

Resolved! Number of licenses uses by multiple security contextes

Hi out thereWe are going to deploy a active/active setup of 2 ASA 5585's. Here we will implement a concept of security zones through context's where different services will be firewalled through a seperate firewall context. Now my question - will a s...

Have problem with ASA (Active/Standby)?

Dear All,I would like to ask you about ASA 5510 (Active/Standby). i have two ASA 5510 and i did configuretion failover and it is working ( Active / Standby)buy my issue that when primary donw, the standby unit up to primary but the primary came back ...

How to create 2 DMZs

Hi,I wanted to know how to create two DMZ with different network. 10.0.1.0 and 10.0.2.0.Also, I want to know how the inside interface can have access on themThanksHarold

Network Security

Forum Posts

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

Resolved! NAT question on 8.4

documents

Upgrade Asa 5510 from 8.0.5 to 8.4.3 ?

Resolved! Firewall ASA 5505 (Transparent) - Filter with hostname

Resolved! Number of licenses uses by multiple security contextes

Have problem with ASA (Active/Standby)?

How to create 2 DMZs

FMC 7.4 and multi-instance FPR3130 chassis upgrades

Announcing the release of Firewall Migration Tool Version 7.7.10

CSCvx25052 - DOC: FTD Syslog messages 43000x missing from FMC

FMC API to get real time VPN/S2S tunnel and CPU/Memory perf metrics

Firepower 2130 -how to resolve plugin 70658 SSH Server CBC Mode Cipher

FMC: Automatic renew certificates?

Finding the forgotten IP address of a Cisco PIX 506E

Nexus using sha256 authentication for NTP

Migrating from Cisco ASA 5525 running SR 9.10 to Firepower 3120

Cisco ASA set ACL of white list fail to function