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Cisco ASA – Inbound TCP connection denied from x.x.x.x to x.x.x flags SYN on interface Outside

October 15, 2018 by Geeks Hangout

Problem: After setting up a site to site VPN tunnel on a Cisco ASA firewall, traffic was being dropped with the message “Inbound TCP connection denied from x.x.x.x to x.x.x flags SYN on interface Outside” The traffic inbound on this …

Zabbix: Monitoring a Cisco ASA Firewall

October 9, 2021June 16, 2018 by Geeks Hangout

I recently started to trial Zabbix 3.4 as a network monitoring solution, so far I really like it. Monitoring my Cisco LAN worked out the box using the built-in template “Template Net Cisco IOS SNMPv2”, however, this template would not …