Re: are my dmz servers making my network vulnerable?
The following two lines allow your host V to access anything through the firewall.
access-list acl_dmz permit tcp host V any
access-list acl_dmz permit ip host V any
The permit IP is allowing all IP traffic, (UDP, TCP and ICMP) so the permit tcp and icmp lines are redundant. I would remove those two line and only allow traffic from the DMZ that is required for host V to function. If someone hijacks host V, they have full access to your internal network using IP right now.
I would find out what ports need to be open, and only allow traffic on those ports. Also, only allow traffic between specific host is possible. With the SQL, I would set the ACL to only allow the SQL traffic between host V and your SQL Server.
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We have configured the outside and inside Interface with official ipv6 adresses, set a default route on outside Interface to our router, we also have definied a rule , which also gets hits, to permit tcp from inside Interface to any6.
In Syslog I also se...