Hello In our intranet is an attacker who flooding OpenBSD router by ARP requests. Due to this we have trouble with internet connection. Is there a way how to protect server against ARP poisoning attack?
messages in /var/log/messages Aug 6 23:33:53 host22 /bsd: arp info overwritten for 192.168.1.249 by 00:e0:98:be:d3:cd on rl0 Aug 6 23:33:53 host22 /bsd: arp info overwritten for 192.168.1.246 by 00:e0:98:c5:8b:b9 on rl0 Aug 6 23:33:53 host22 /bsd: arp info overwritten for 192.168.1.245 by 00:e0:98:c5:9b:c5 on rl0 Aug 6 23:33:53 host22 /bsd: arp info overwritten for 192.168.1.242 by 00:e0:98:c5:8b:b9 on rl0 and still continue ........ S pozdravem / Best Regards Miroslav Kubik IT Specialist Enterprise Server Farms
