How a DHCP server works and how to configure it on a Cisco router
The Cisco DHCP server feature is a full implementation that assigns and manages IP addresses from specified address pools to DHCP clients. After a DHCP client has booted, the client begins sending...
View ArticleSeptember 2012: eleven Cisco vulnerabilities
The Cisco Product Security Incident Response Team (PSIRT) has published eleven important vulnerability advisories: Cisco IOS Software Network Address Translation Vulnerabilities Cisco IOS Software...
View ArticleClik here to view.
Cisco Unity Express Multiple Vulnerabilities
The Cisco Unity Express software contains two important vulnerabilities: CVE ID: CVE-2013-1114: Cisco Unity Express software prior to version 8.0 contains vulnerabilities that could allow an...
View ArticleClik here to view.
NAT Virtual Interface aka NVI, what is that?!
Not everyone knows that from IOS version 12.3(14)T, Cisco has introduced a new feature called NAT Virtual Interface; NVI removes the requirements to configure an interface as either NAT inside or NAT...
View ArticleClik here to view.
February 2013: four Cisco vulnerabilities
The Cisco Product Security Incident Response Team (PSIRT) has published four important vulnerability advisories: Cisco Unified Communications Manager Multiple Denial of Service Vulnerabilities Cisco...
View ArticleClik here to view.
Cisco Video Surveillance Operations Manager 6.3.2 – Multiple vulnerabilities
Part of the Cisco Video Surveillance Manager product suite, the Cisco Video Surveillance Operations Manager enables the efficient and effective configuration and management of video throughout an...
View ArticleClik here to view.
March 2013: seven Cisco vulnerabilities
The Cisco Product Security Incident Response Team (PSIRT) has published seven important vulnerability advisories: Cisco IOS Software Zone-Based Policy Firewall Session Initiation Protocol Inspection...
View ArticleClik here to view.
PBR: Route a packet based on source IP address
Everyone knows that the routing table lists the routes to particular network destinations, but is it possible define the next-hop based on source ip, packet size or other criteria? Obviously yes!...
View ArticleClik here to view.
April 2013: ten Cisco vulnerabilities
The Cisco Product Security Incident Response Team (PSIRT) has published ten important vulnerability advisories: Multiple Vulnerabilities in Cisco NX-OS-Based Products Cisco Device Manager Command...
View ArticleClik here to view.
Using IP SLA to change routing
Cisco IP SLAs is a part of Cisco IOS that allows Cisco customers to analyze IP service levels for IP applications and services by using active traffic monitoring for measuring network performance. With...
View ArticleClik here to view.
Reload in X? Why don’t you rollback or replace the configuration?
Do you remember the article ‘How to schedule a reload‘? This feature (reload in ‘x’) is useful when you must apply a critical configuration on a remote device, for instance new route or new acl. In...
View ArticleClik here to view.
May 2013: two Cisco vulnerabilities
The Cisco Product Security Incident Response Team (PSIRT) has published two important vulnerability advisories: Cisco TelePresence Supervisor MSE 8050 Denial of Service Vulnerability Multiple...
View ArticleClik here to view.
June 2013: five Cisco vulnerabilities
The Cisco Product Security Incident Response Team (PSIRT) has published five important vulnerability advisories: Multiple Vulnerabilities in Cisco Web Security Appliance Multiple Vulnerabilities in...
View ArticleClik here to view.
July 2013: five Cisco vulnerabilities
The Cisco Product Security Incident Response Team (PSIRT) has published five important vulnerability advisories: Authenticated Command Injection Vulnerability in Multiple Cisco Content Network and...
View ArticleClik here to view.
How to save configurations using SNMP
Everyone knows there are software to get the configuration using SNMP; but how can you copy the configuration if you don’t have any tool? Let me explain what is SNMP before show you how to implement...
View ArticleClik here to view.
August 2013: six Cisco vulnerabilities
The Cisco Product Security Incident Response Team (PSIRT) has published six important vulnerability advisories: Cisco Secure Access Control Server Remote Command Execution Vulnerability Multiple...
View ArticleClik here to view.
WhoisUP v0.2 released!
One year ago, I had published Whoisup v0.1, a script that monitors hosts via ICMP and shows the status in a web page. The script had obtained a good success, so I have decides to continue the WhoisUP...
View ArticleClik here to view.
September 2013: eleven Cisco vulnerabilities
The Cisco Product Security Incident Response Team (PSIRT) has published eleven important vulnerability advisories: Cisco IOS Software Queue Wedge Denial of Service Vulnerability Cisco IOS Software...
View ArticleClik here to view.
October 2013: seven Cisco vulnerabilities
The Cisco Product Security Incident Response Team (PSIRT) has published seven important vulnerability advisories: Multiple Vulnerabilities in Cisco IOS XE Software for 1000 Series Aggregation Services...
View ArticleClik here to view.
Cisco ASA < 8.4.4.6 | 8.2.5.32 Ethernet Information Leak
This is the Cisco ASA ethernet information leak exploit that leverages the vulnerability noted in CVE-2003-0001. Versions prior to 8.4.4.6 and 8.2.5.32 are affected. Multiple platform ethernet Network...
View Article
