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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: The worst abuse e-mail ever, sverige.net
> The port 25 blocking seemed like a real good idea. > > -M I disagree. Port blocking does not change user behavior & it is user behavior that is causing this problem. Blocking just hides it. I used to believe in port blocking as the solution to many user problems but now I have 3 and 4 page ACL's on my border routers. This does not scale. Yes, I could push this out via radius to the NAS but again this does not solve the problem. I feel blocking just pushes us closer to ports loosing their uniqueness, as we have seen with PTP filesharing. The solution I am working toward is quickly identifying user infections. We are almost there. I collect and record all traffic from the users going to dark space and am almost finished with the system that will identify who held that IP at a specific time. It is all in SQL so that is easy. We already have a system in place where users, after multiple virus problems, must obtain protection software prior to being re-enabled. Ramping up the amount of proof we have at hand will allow us to enforce our existing AUP. The key to changing a behavior is to create consequences to this behavior. I have noticed we never have problems getting a user to get virus/firewall software after they pay to have their box disinfected. Hit the users first with e-mails, then phone contact, ending with being shut off should create the consequences needed to change their behavior. james
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