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ZoneAlarm Pro 3.1 review: ZoneAlarm Pro 3.1

ZoneAlarm Pro 3.1

Gregg Keizer
4 min read
Until recently, digital burglars didn't bother tinkering with home computers. But since many home PCs are now hooked up to always-on DSL and cable connections, the data they contain is a tempting target. That's why you need a
firewall, software that protects your information. Fortunately, ZoneAlarm Pro defends your machine from hackers, eradicates ads, and sniffs e-mail for possible Trojan horses. It's easy enough for anyone to set up and use, and it offers sufficient options and flexibility to keep power users content. Users who need only a firewall, however, can't go wrong with the slightly trimmed-down ZoneAlarm Plus. But Windows users who want complete online security would do well with ZoneAlarm Pro. If the $50 ZoneAlarm Pro is outside your budget, there's always the free ZoneAlarm. The freebie doesn't include many of Pro's better features, such as ad blocking, cookie management, and the extra info that Alert Advisor provides, but its firewall heart beats just as strongly. Download the 3.5MB ZoneAlarm Pro (you can test-drive it free for 30 days), install it, and you'll have ZoneAlarm Pro working within five minutes--the setup couldn't be easier. Unless you want to delve into its configuration details, ZoneAlarm Pro provides wizards that will walk you through the setup. Keep clicking the Next button, and ZoneAlarm Pro automatically chooses the strongest possible defensive modes for your PC.

ZoneAlarm Pro's redesigned interface not only gives an instant status update, it's also easier to navigate than earlier editions'.

ZoneAlarm Pro benefits from a total interface redesign and now looks somewhat like
Norton Internet Security and McAfee Internet Security, with its navigation along the left side. The Control Center displays the current status of all your safeguards, including any programs currently accessing the Internet, and it provides one-click entry to all configuration settings. Links along the left-hand side--to Firewall, Program Control, and Privacy--lead to detailed settings, security logs, and options. Across the top, twin gauges monitor both upstream (outgoing) and downstream (incoming) Net activity. A holdover from the old interface, a large Stop button, lets you disengage protection at any time. We love the new look; it's easier on the eyes and easier to navigate, too.
Depending on how you set up ZoneAlarm Pro, each time a program or a program component on your PC wants to access the Internet, the firewall displays an alert to let you know whether the activity is authorized. A useful Internet Lock feature freezes your Internet connection so that no activity--incoming or outgoing--occurs when you step away from your machine. You can configure the lock to engage automatically after a specified amount of time or whenever your screensaver activates.
But the enhanced Alert Advisor feature goes a step further. When a malicious user attempts to break into your PC, a click of the Alert Advisor button displays the geographical location of the hacker. Not even Norton Internet Security currently does this.
But wait, there's more. ZoneAlarm Pro includes a new cookie manager that prevents third-party sites from transmitting personal info but allows full rein to cookies from trusted sites. And an ad-blocking component eradicates all sorts of ads, including pop-up, pop-under, banner, and animated ones. ZoneAlarm Pro monitors more than 30 types of e-mail file attachments that potentially carry Trojan horses or worms, and it quarantines these files so that you can examine them later with a good virus killer. Finally, ZoneAlarm Pro includes Enhanced Hacker Tracking, allowing you to find out who's attacking your system. This final feature requires an additional annual maintenance contract beyond the initial year of support.
ZoneAlarm Pro is available in French, German, and Japanese language editions.
We ran ZoneAlarm Pro against Steve Gibson's ShieldsUp port tester. In stealth mode, our PC was invisible to the world. That's good.
ZoneAlarm Plus
ShieldsUp Port Probe   ShieldsUp Port Probe  
Port 21-FTP Stealth Port 135-RPC Stealth
Port 23-Telnet Stealth Port 139-NetBIOS Stealth
Port 25-SMTP Stealth Port 143-IMAP Stealth
Port 79-Finger Stealth Port 443-HTTPS Stealth
Port 80-HTTP Stealth Port 445-MSFT DS Stealth
Port 110-POP3 Stealth Port 5000 UPnP Stealth
Port 113-IDENT Stealth Leak test Passed

We began with IP Agent, a free utility provided by ShieldsUp that determines the test machine's current IP address, then contacts the ShieldsUp Web site to begin testing.
Next, the Port Probe utility tested our system's defense against Internet port scanners. The test originates from the ShieldsUp server and attempts to establish standard TCP/IP (Internet) connections on a handful of commonly exploited Internet service ports on the test computer.
Using ShieldsUp, each port gives one of the three following results:
Stealth: This result means that the probe was not able to find this particular port on your computer. This is the most secure result.
Closed: This shows that the probe was able to detect this particular port on your computer but that the connection was refused.
Open: This result means that the port is actively advertising its presence on the Internet. Port scanners will have no trouble finding it.
More information on these tests and what the results mean can be found at
More information about how we test firewalls can be found at CNET Labs.
For ZoneAlarm Pro, online help and e-mail remain your only tech-support options. Fortunately, ZoneLab's support site is first-rate, with FAQs, a list of known problems, and reference documents. If you still need help, you'll have to e-mail the help desk, using a complicated online form. Although ZoneLabs promises to respond to messages from Pro customers in one to two business days, its tech support answered our test query in less than two hours.

ZoneAlarm Pro 3.1

Score Breakdown

Setup 9Features 9Performance 9Support 7