I have been requested to open a particular port on my firewall for my CRM software developer and have done so in order to conduct business with them. (They also use PC Anywhere to remotely access a machine on my network). I know that these were probably not the wisest decisions, but live and learn. I have lived, now I hope to learn.
I have closed off their access to PC Anywhere (ie closed those well know ports on my firewall), but they installed Dameware (apparently over the other port they asked I open??) and accessed the computer on my network. I can close this other port and the situation goes away, but as I am trying to learn here, what are the implications of having that port open to TCP traffic? Hpw big a hole do I open up when I open up this port? I have it linked to a particualr machine on my LAN. I tried to mimic what they did, by installing Dameware from outside my network and could not make it happen. Install doesn't fail, but it doesn't succeed either.
Any suggestions and help in gaining a better understanding of what is going on here would be much appreciated. Thanks.
