Running two firewalls — in Windows and in a router — might seem redundant, but there are good reasons to do so.
Plus: Security concerns about Windows Error Reporting, advice on differential copying/synching software, and getting a balky browser add-in to work.
Concerned about outbound, ‘phone-home’ activity
Reader Harry M. Ward is trying to sort out some firewall issues.
- “I’ve read your excellent Feb. 28 article, ‘Using multiple layers of security — an update.’ I’ve also read the March 11, 2010, LangaList Plus item, ‘Let’s put your firewall to the test.’
“I just tested my router’s firewall, using the sites recommended in those stories. The tests that check the firewall’s ability to stop inbound connections found all of my ports ‘stealthed’ and invisible from the outside. But the firewall failed the leak tests — it doesn’t stop outbound connections. Should I be worried?
“Also, I’ve been told I don’t need a PC-based firewall because all ports are stealthed by the router. Is that true? (I run XP Pro SP3 on one computer and Windows 7 Pro SP1 on another.)”
Good questions, Harry. Let me answer them in reverse order: