Author: René Jorissen
GNS3 supports JunOS
A lot of you will know GNS3. GNS3 is a graphical network simulator that allows simulation of complex networks. With GNS3 you can simulate multiple Cisco routers and the Cisco PIX firewall. GNS3 allows you to emulate real Cisco IOS images, design and experiment with complex networks, connect the virtual lab to the real world … Read More
Google Public DNS
I just read an article about Google publishing a Public DNS service. Google Public DNS is a free, global DNS resolution service. Google recommends using their Public DNS server as an alternative to your current DNS servers. To try it out: Configure your network settings to use the IP addresses 8.8.8.8 and 8.8.4.4 as your … Read More
Barracuda – Outbound SMTP Host/Smart Host in Build 3.5.12.012
When upgrading from a build older then 3.5.12.012 to a build 0.12 or above, you should pay attention to the Outbound SMTP host/Smart host configuration. This picture below shows the configuration option. The release notes tell the following: Fix: Now honors outbound BASIC > Administration > ‘SMTP host/Smarthost’ for mail delivery when relaying (recipient domain … Read More
Step-by-step guide: SwitchMap under CactiEZ
Switchmap is a Perl program that creates HTML pages that show information about a set of Cisco Ethernet switches. It uses SNMP to gather data from the switches. Normally I install Switchmap in conjunction with CactiEZ and every time I am struggling to get Switchmap to work perfectly. During another installation I wrote this step-by-step … Read More
New Theme
As I already announced on Twitter, I have updated my blog theme. I am very curious about your comments…… should this theme stay or should I revert back to the old one? What would you change at the current theme? Updated on December 1ste 2009 Yesterday I have been playing with my new theme and … Read More
eSafe license expires
I just received the following interesting question: What happens if our eSafe license expires?……Because it expires this weekend!!!!!!!! Interesting question, because I never encountered such a situation. Normally the license is renewed in a timely fashion or a trial is stopped before the license expires. I searched the Knowledge Base from eSafe and found an … Read More