Cisco IOS – Setup Remote Telnet/SSH Management
KB ID 000093 Problem Having the ability to remotely administer network devices, means I don’t have to get my lazy carcass out of my chair and start fishing console cables out of my bag, also it saves on shoe leather, and travelling time. Solution Cisco Router / Switch – Setup Telnet Access These days people frown at Telnet. It’s an insecure protocol so your password is sent in clear text over the wire, and can be...
Cisco Router – CBAC and Zone Based Firewall Setup
KB ID 0000937 Problem IOS 11.2 gave us CBAC, and IOS 12.4(6)T gave us the Zone Based Firewall. You can still use either, (providing you are running the correct IOS, or in the case of version 15 and upwards, added the correct license, ‘securityK9’). For older IOS versions usually you want the advipservices version of the IOS). Solution Run the following command to see if you have the correct license installed....
Cisco PRSM – Replace the Certificate Using Microsoft Certificate Services
KB ID 0001023 Problem Cisco PRSM gives you the ability to import certificates into it, but like other Linux distros does not give you the tools to generate the actual certificate request. The documentation tells you to use OpenSSL to this. I was just about to fire up a CentOS box when I remembered I did something similar for VMware 5.5 not so long ago, would the same procedure work here? Yes it did, and it’s a lot easier than...
PIX 506E and 501 Firewall Image and PDM Upgrade
KB ID 0000065 Problem Note: PIX 515E and above, can still be upgraded to version 8.0(4) click here for details Some people will wonder why I’m bothering to write this up, but the truth is, there are LOADS of older PIX firewalls out there in the wild, and all the PIX 501’s and 506E’s that are being retired from corporate use are being bought on ebay, or being put on IT departments test benches. This page deals with...
Cisco PIX (500 Series) Password Recovery / Reset
KB ID 0000064 Problem If you are locked out of your PIX firewall then you will need to do some password recovery, this procedure will reset the enable password and remove any AAA username and password settings on the PIX. Note: If you have a PIX 520 (This has a floppy drive, and the process is different) CLICK HERE Solution Before You Start ! 1. You need to know the software version that is running on the PIX e.g 6.3(5) or 7.0(1) 2....
Set up a PIX Firewall with the PDM
KB ID 0000217 Problem The following procedure is a complete run though on setting up a Cisco PIX Firewall (PIX 501, 506, 506E, 515, 515E, 520, 525, or 535) via the HTTPS GUI front end (PDM). Note: the PDM will only work with firewall operating systems BEFORE version 7.x.(x). Therefore PIX platforms that are 515E, 525 or 535 should be running version 7.x(x) or above and should be web managed via the ASDM. Unless you are out of support...
Cisco PIX 500 – IPSEC Site to Site VPNs (v6)
KB ID 0000611 Problem Note: This is for firewalls running an operating system BEFORE version 7, if you have an PIX running version 7 or above go here instead. I’ll run though he commands first and then the configuration from PDM at the end. Solution PIX 500: Configure a site to site VPN from command line 1. Connect to the PIX, go to “enable mode”, then to “Configure terminal mode” User Access...
Cisco PIX – “What are the files in flash”
KB ID 0000757 Problem With modern Cisco ASA firewalls a show flash (or show disk0) command will give you a descriptive list of what is stored in NVRAM. With an older version 6 firewall the result is a little more confusing. Solution If you connect to the PIX and view the contents of the flash, you will see something like this; Sent username “pix” Type help or ‘?’ for a list of available commands. Petes-PIX>...
VPN Problem Cisco PIX v6 to Cisco ASA 5500
KB ID 0000761 Problem I found this out purely by accident today, while replacing an old PIX 506E that had died with an ASA 5505. The client’s other site still had a PIX 506E (Running 6.3(5)). I was setting up the VPN, and noticed something that WOULD have been a problem if I had not spotted it. Solution Essentially the older PIX firewalls are set for 3DES encryption, MD5 Hashing and Diffie Hellman 2. After version 8.4 the ASA...
Upgrading a PIX 506E to Version 7
KB ID 0000764 Problem As far as Cisco is concerned you can’t upgrade a PIX 506E past version 6.3(5) PIX 506E and 501 Firewall Image and PDM Upgrade However if you have a spare one lying around and you want to have a play, you CAN get it to version 7.1(2). Note: It is possible to run the 8.0(2) version of the PIX OS on a 506E, Howerver you need to decompress the image and make some changes to it before it will work (usung...