10+years expertise on Networking and Unix/Linux environments. I have been working on ISPs for more than 7 years.
I have huge experience in the following areas:
Firewalls (Cisco, iptables, PFSense, Mikrotic)
VPN ( Cisco, OpenVPN)
IP Routing & MPLS ( VPNs, VRFs, VPLS )
Monitoring & Health Checks ( Cacti, Nagios, Rancid, Syslogs and SNMP traps )
Good knowledge of scripting ( Bash, expect, AWK )