New firewall - slow response - "Inbound UDP" & SQL 1433, 1434 attempts.
Posted on 2004-10-17
I have web server with a Linksys router that I only have 1433, 80, & 8080 forwarded. I loaded a new firewall (TPF 6.0) and now all the web sites are getting terribly slow response and I am getting constant attempts on Inbound UDP and SQL (1433,1434) access attempts - oh, and DLLHOST, too.
All the sites I host are data driven - the data displayed on the sites are from SQL databases.
I have several questions relating to this:
Are the other ports open if they are not being forwarded or do I need to do something else to close them?
Why would a new firewall slow down response time (same product, upgraded version)?
Are the inbound attempts really from hackers/viruses/trojans (etc) or are they legitimate and how can I tell the difference?
How can web users still get the sites to come up if I deny all the inbound access attempts (which I'm doing now)?
Any other thoughts would be appreciated as I'm just trying to learn all I can about hosting before I get wiped out.