Linux routers and firewalls
All firewalls and routers except the vpn router were GNU/Linux servers (Slackware and later migrated to Fedora) with shorewall, iptables and iputils. Different route tables with PBR were created to utilize two internet links and one VPN connection. The redundancy (active-passive) of edge routers and firewalls was achieved by means of keepalived.
Skillful network and system engineer (active CCNP certification) with good analytical, troubleshooting, and communication skills. Over 7 years' experience in configuring and maintaining highly available computer networks and network related services on Cisco devices and GNU/Linux servers. Profficient in configuring dynamic routing protocols (BGP, OSPF, EIGRP), VPN technologies (IPSec, GRE), IPv6, STP, etherchannel, VTP, VRRP, HSRP; Cisco routers and switches (IOS/CatOS), ASA appliances, GNU/Linux ditributions including Red Hat, Debian, CentOS, Fedora, Ubuntu, Slackware (iptables, openswan, racoon, openvpn, BIND, Squid, Apache, DHCP, TFTP, vsftpd, keepalived etc).
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