Using a ACL to block unwanted IP’s – Cisco ASA

I used the gui to create the rule and network object and the command line then to fill the IP’s i wanted adding to my block list. But from the command line you can create your object group doing the following – hostname (config)# object-group network BlockUnwanted hostname (config-network)# network-object 1.178.179.217 255.255.255.255 This will add Read more about Using a ACL to block unwanted IP’s – Cisco ASA[…]

Port forward for a Cisco ASA using ASDM

Cisco really make this hard work compared to nearly every other device…so here is my run through using ASDM, this is for RDP Create NAT Rule Click Configuration (top) Click Firewall (bottom-left) Click NAT Rules (middle-left) Select Add->Static NAT Rule Original Interface: inside Source: 192.168.0.99 Translated Interface: Outside Select Use Interface IP Address Port Address Read more about Port forward for a Cisco ASA using ASDM[…]

Zabbix: Less than 25% free in the configuration cache

How i fixed it… Im running my zabbix server on ubuntu – Open your sysctl.conf and assign an amount of shared memory #vi /etc/sysctl.conf:  My setting below – 1 kernel.shmmax=2834217728 This gives you 2.6gb of shared space To apply changes in the /etc/sysctl.conf immediately, execute: 1 2 # sysctl -p kernel.shmmax = 2834217728   Now edit Read more about Zabbix: Less than 25% free in the configuration cache[…]

HP Procurve CLI Cheat Sheet

A list of basic commands for HP switches. Notes: <> indicates a changeable variable, such as port number or VLAN ID. [] indicates an optional string or value. <port> value can be either a single port (A1), multiple ports (A1,B3), or a port string (A1-B10). | signifies interchangeable (or) values. Config Files and Flash Files Read more about HP Procurve CLI Cheat Sheet[…]

Boot partition full of old kernels

I started getting an error message every time I booted into Ubuntu. “‘The volume “boot” has only ….. bytes disk space remaining.”.   This is caused by old Linux kernels filling up the boot partition on the hard drive. Most users don’t need to keep old kernels and therefore you can remove them to free Read more about Boot partition full of old kernels[…]