I have got a big problem. We have got web server based on windows server on cisco pix 515E. We have got sophos Antivirus installed on the server and they have now outsourced their antivirus update servers to third party in highly unporfessional way where their public IP keeps on changing on daily basis.
We earlier have locked down the outbound traffic using ACL but but it does not work and we are forced to use manual update that is a pain.
can you please help me finding out if there is a way to allow DNS name based traffic i.e. sophos.com from firewall so that I can get rid of my troublesome job.
My PIX 515E firewall version is 7.1(2).
Your help is highly appriciated.
Thankss and regards.