seroquel sleep dependence positive reviews of generic lexapro xenical weight loss viagra for young men at the gas stations price of cialis in canada over the counter diflucan at walgreens bactrim side effects how long does it last side effects of using augmentine seroquel 25 mg is tinnitus a side effect escitalopram odor side effects como tomar depo provera 50 mg phenergan anxiolytic therapy flagyl vaginal suppository uk lasix tablet mean in hindi isotretinoin 20 mg price walmart zoloft coming off side effects nizoral shampoo at walgreens benicar anlo causa impotencia does lamisil cream work plexus safe to take withsynthroid and cytorme. how can you tell if viagra is fake online viagra canada no prescription sertraline hcl 50 mg high isotretinoin in kenya ivermectine sans ordonnance canada can i drink while on septra ds obat captopril 12.5 mg lasix furosemid sanofi aventis famvir 200 buy tetracycline online australia prometrium 300 mg prevent miscarriage is atenolol 100 mg stronger than lisinopril 10mg genaric cialis e20 from india how many hours apart to take fluconazole twice a day naproxen uk metronidazole 500 mg safe when breastfeeding advantages and disadvantages of nitroglycerin ointment is metronidazole any good at fighting chest infections donde comprar misoprostol en cordoba,capital glimepiride 2mg tablets walmart price valtrex dosages for herpetic whitlow recurrence finasteride for hair loss in men in pakistan how much is metoprolol tartrate 25 mg without insurance celexa bipolar bulimia doxazosin cost xenical 120mg in bangladesh ic montelukast sod physical signs of ovulation on clomid levitra 10 mg 8 st??ck lovaquin or cipro uses stopping wellbutrin cold turkey fluconazole 400 mg iv paxil and hair growth zithromax 1 gm pack generic zoloft cost walmart nolvadex 10mg price what are the side effects of valacyclovir i shot myself allegra rafael buy cipro online generic escitalopram oxalate stopping obat tetes telinga chloramphenicol what dosage of cytotec can i use for abortion strattera vs intuniv oral lichen planus tamsulosin doxycycline for sale pigeons how much one tablets of amoxicillin cost at safeway micardis price cvs will 5 days of prednisone cause weight gain diflucan 100mg for yeast cialis discount online prices for singulair voltaren rapid 25 generic paxil 80 mg daily teva mirtazapine whe to stop taking and how generic luvox side effects matador levofloxacin hemihydrate use for std tamsulosin 400mg bactrim for cats with urinary obstruction or cystitis harga acyclovir liquid biotech ciprofloxacin 4 19 can ciprofloxacin antibiotic tablet affect conception cpt lasix misoprostol pill cost in south africa 1 g azithromycin chlamydia where can i order the drug phenergan 12.5 mg cialis prices giant eagle doxycycline cost at riteaid ppt on tamsulosin albuterol inhaler for fat loss how many sprays nexium 14 day street value of buspar can wellbutrin xl 150 be used fir quitting smokong levitra 10 mg orodispersibile costo buy valacyclovir online no prescription laif anitdepressant atorvastatin 40 mg prospect nitroglycerin spray how much at vic priligy buy online uk warfarin 5 tetracycline hydrochloride uses for flower horn fish is bactrim a powerful antibiotic mirtazapine anafranil weight gain clavulin augmentin differenze is scanax 500 a antibiotic can we take vitamin c,flagyl,ampiclox together at once clopidogrelclopidogrel dosage professional cialis 20mg anti depressants thay fause rashes can citalopram cause gout zoloft is amazing glucophage sr 500mg price buspirone reviews forum how fast does seroquel make me sleepy work things to know about cialis eslo mismo singulair y monteluca when is clomid out of your system price of levitra 20 mg at walmart metronidazole dosage for ferrets anafranil 25 mg off the shelf berapa butir minum cytotec misoprostol selling pharmacy in barcelona tamoxifen and elevated blood sugars can you buy viagra over the counter kl apakah fungsi erythromycin stearate equivalent does fluoxetine capsules prevent premature ejaculation obat jerawat erythromycin does cyproheptadine stimulant appetite in dogs flagyl tablets side effects iui clomid dosage inderal side effects australia tab terbinafine 250 price in india over the counter albuterol equivalent dosis valacyclovir viagra brand overnight ritemed atorvastatin how long is the shelf life of bactrim taking accutane every other day 10mg buy brand name topamax online effect of cipro en fluconazole on menstrual periods uk viagra for sale oxycodone with bactrim and doxy how long can 15mg of remeron stay in your system buy amoxicillin strep throat cyproheptadine in south africa singulair 5 mg costo montelukast best generics para que sirve ciprofloxacin 500 mg tablets does amoxicillin interfere with necon birth control propranolol 40 mg leaflet metronidazole250mg usage how to convince doctor to prescribe cialis terbinafine hcl 250 mg en espanol counterfeit lipitor uk eat or put avezol fluconazole 150mg cymbalta after 30 day augmentin 1000 mg price in india doxycycline structural formula what is the reaction with tramadol and topiramate zofran 4 mg tablet dosage can you take diflucan 4 days apart cost of tablet tamsulosin.4mg viagra slang names can i take ativan with diflucan flagyl dose dogs piroxicam 20 mg uses citalopram antidepressant taking prometrium without a uterus where can buy misoprostol tablet in srilanka duloxetine sales can i take vinegar while taking flagyl singulair 90 amoxil suspension over amoxil capsules hoe werkt het cytotec fibro cymbalta120mg trazodone hydrochloride street price otc viagra walmart 1000 miles cipro how much is levitra at walmart dog on des and elavil legs twitch lexapro weight gain forums ketoconazole ovulos chemone viagra how to spot fake kamagra cost of warfarin without insurance azithromycin 250 mg price walmart levitra brand best price phenergan schedule south africa is amoxicillin made by dava gluten free generic zoloft reviews synthroid filler can you take levofloxacin and amoxicillin together citalopram 20 mg make u lose weight anti depressants not working 5 weeks is bactrim same as bacitracin when does albuterol wear off side effects of premarin .625 mg cream is keflex in the tetracycline famiky valacyclovir 1 gm dose for cold sores espanol how much is voltaren gel cost what classification is warfarin and lasix azithromycin cost each in the philippines minipress xl 10mg how long does it take bactrim to clear your system metronidazole gel for bv over the counter cozaar with or without food lost weight on estradiol lisinopril and sun sensitivity flu shot while on heparin and coumadin can i use antibiotics for uti on pink eye where can buy misoprostol tablet in srilanka what milligram of antibiotic for 170 lb person tetracycline 3 ointment canada generic levitra same should i stop using estradiol when taking prometrium order viagra pills online where can i buy propecia in ireland singulair purchase online estradiol valerate tablets 2 mg 900 mg wellbutrin xl where can i buy provera in the philippines purchase clomid sydney aventis taking amoxicillin and energy drink buy extended release metformin uk buy premarin online uk para que se usa el medicamento digoxin 250 mcg baclofen pump insertion cpt code canada cialis prices ciprofloxavin 500mg dari pma strattera 60 mg vs adderall online pharmacy no prescription needed cialis when does uemr period come agter taking clomid what antibiotics to give to cats in south africa irbesartan 225mg cheap misoprostol online femara generic launch generic viagra pharmacy reviews how soon to take pregnancy test with clomid albuterol inhaler vs tablets viagra online generic quit prednisone dogs tetracycline and omeprazole cause yeast infections walmart pharmacy viagra 100 mg price zyprexa low dose viagra india pharmacy keflex metronidazole interaction carvedilol 9.375 where to buy cytotec pills in south africa ciprofloxacin 250 good for insects bites how do i take prednisone 10mg for 12 days viagra telmisartan flagyl dose for dogs celexa and prednisone can u get high off celebrex cymbalta and adderall overdose taking amlodipine twice and lisinopril clomid ovulation calculator for baby girl non rx order bactrim cost walmart can use ketoconazole shampoo and itraconazole estrace 2 mg teva how much is buspirone at cvs nolvadex in dinabol cycle kegunaan obat gastrul misoprostol 200 pg tegretol prozac and strattera combo for bipolar whats the dosage if taking doxycycline to cure syphilis proscar 5 mg 28 tb chinese viagra in terry white chemists fake lipitor uk bupropion sr online pharmacy prednisone 5mg taper directions voltaren 25 mg suppository panduan memakan amoxicillin trihydrate nama obat ketoconazole tab.metoprolol 12.5 wellbutrin potencja doxycycline 100mg drops ampicillin 1g vial does propecia make you look younger can you take lisinopril every other day cuanto cuesta este antibiotico rs bactrim ds tabs cvs fexofenadine price zyprexa 7652 lamisil tablets shelf life singulair 20 mg daily can i shoot baclofen order cialis no rx flagyl 400 at 9th month of pregnancy celexa vs wellbutrin for ms esomeprazole injection patents clomid twice a day dosing why do antibiotics go in the fridge doxepin 10mg for anxiety taking flomax and avodart together benazepril price at walmart doxycycline price comparison uk con 15 dias de embarazo puedo tomar cytotec medicamento coumadin 2.5 propranolol para ansiedade gabapentin 600 istruciones en espanol ao to use d drug misoprostol plavix 75 mg substitute tablet in price in india allegra d equal adderall purchase erythromycin nortriptyline 25 mg zoloft and metformin combo zovirax ointment 15 mg help me with a sore on my rectum prozac 30mg in nairobi earache antibiotics viagra for sale with paypal can you take 500 mg amoxicillin with prednisone 10 mg can gabapentin and alcohol get you high lexapro drink equivalents paroxetine hcl 15mg buy zithromax online net does cialis lose its potency after expiry date can you have terbinafine and penicillin buy erythromycin ophthalmic ointment usp is metoprolol a narcotic wellbutrin after 8 weeks can flagyl and cipro be taken with mucunex fake uk viagra what is the work of ketoconazole tablets usp 200mg trazodone ultimate time in body zithromax 2g gonorrhea amoxicillin 500mg for dogs no prescription valsartan generic uk cymbalta duloxetine 30 mg celebrex price in india kegunaan dexamethasone tablet how long does take for lisinopril 10 mg to work is it albuterol good for babies congested chest allegra fox how much does 100mg clozapine go for on the street pamprin and bupropion kamagra stockists warwickshire viagra online by using western union payment revista 15 minutos diciembre buy flagyl for dogs propecia 2 years is cialis super active 20 mg better than cialis 5 mg how long does a remeron stay in your system packing of misoprostol in pakistan escitalopram vs citalopram reviews norvasc vs concor la celebrex tiene cortisona dexamethasone cf augmentin walmart price atorvastatin 40 mg albuterol tabs australia singulair dosage 10 hydrochlorothiazide side effects rite aid contraindicaciones del lisinopril usp 20 mg valacyclovir dosage cold sores azithromycin 250 mg tablets for strept throat valsartan generik diltiazem 24hr cd side effects lisinopril 80 mg 4 azithromycin chlamydia antidepressant australia packaging thyroxine sodium tablets ip 75 mcg cyproheptadine digestion allegra costa cruise inderal tablete upotreba which work does augmentin and cataflam do is nizoral shampoo available in durban south africa augmentin 6tablets price in medical stores pakistan diltiazem research paper amitriptyline mg dosage amitriptyline half life plavix side effects sun does nizoral work for psoriasis is viagra cheaper in canada lisinopril 3761 levitra price in the us trazodone 150 mg street value is gabapentin like soma olanzapine 30 mg day when recommended buy 2g metronidazole 1000 mg zithromax for acne where to get viagra olanzapine in indonesia can you take cephalexin and prednisone at the same time buy phenergan codeine finasteride prescription jackson ms will singulair hurt a dog ciprofloxacin mg uti xantac with cipro doxycycline from drug store in canada tab tamsulosine medscape is periactin and appettito tablets the same perindopril 4 mg equivalent to lisinopril uses of atarax250mg can i buy metronidazole in boots sertraline hcl y sertraline que es la diferenci zestril 20 mg prezzo walmart price for cialis hydroxyzine seats cheap accutane canada cytotec dose for 7weeks much does tamsulosin cost wean off atenolol 12.5 mg australian lexapro is it safe to take 1g of azithromycin for 7 days sildenafil 25 mg dose xenical orlistat 120mg at dischem order ondansetron how long does 3 year old yake zithromax trade name of acyclovir in pakistan propranolol 60 mg for headache and anxiety doxycycline tiamuline ubat apah erythromycin 250 mg can the be taking for gums singapore nizoral wash esomeprazole magnesium 40 mg generic cymbalta daily dosage prozac 10 mg with elavil fake and original cialis zyprexa pharmacy price generic escitalopram oxalate side effects of propecia 1mg how long does it take ciprodex to work cheap viagra japan chloramphenicol pret buy plavix tablets kamagra gold south africa 15 mg remeron cures tinnitus amoxicillin at petsmart.can be used for humans fluconazole 100mg awp fexofenadine 80 mg ciprofloxacino 800mg para que es when is plavix generic available amoxicillin 200mg human dose for cat bite quetiapine fda black box request amoxicillin trihydrate tingling hands order lisinopril hctz online what is the dosage of prednisone for cats buy nolvadex canada no prescription baclofen 20mg muscle relaxer plavix generic 75 air sound in ear could be side effect of clomid pill fosamax plus 5600 plm misoprostol cytotec price nolvadex tablets shqip vibramycin online propranolol tetralogy of fallot how much is cialis in canada online viagra canada generic can you get high off clonidine hydrochloride 0.1 mg levofloxacin for laryngitis diflucan 150 mg ulcerative colitis 5 mg lexapro started migraines seroquel xl 50mg feeling hungry at night sweets

Personal Firewalls/Intrusion Detection Systems

An Analysis of Mini-firewalls for Windows Users

By Sen Boran

The complexity of Microsoft Windows and browsers/PC applications, and the pervasiveness of networking, have contributed to continual discovery of security weaknesses - which the typical user cannot be expected to follow or understand. Until now the standard tool for defending Windows was the antivirus scanner, but this is no longer enough. The personal firewall has made its debut and may become an essential tool for Windows users connected to hostile networks.

Recent updates:

  1. Introduction
  2. Product Tests
  3. Comparison Charts
  4. Summary and Conclusions
  5. References
  6. Appendix: Acknowledgements | Change history |
    Reader Comments | about the author

Each product is analyzed in a separate article, with the introduction, summary and conclusions in this document.

This report was awarded "Best Comparative Personal Firewall Review" [6] — thanks to those of you who voted. Help us keep it that way by continuing to provide us with detailed feedback/suggestions.


Network firewalls are great for implementing a security policy between different networks, but are often expensive, complicated, inflexible, or do not progress quickly enough to keep up with new attacks. They may also be rendered useless by dialup access weaknesses, encryption, VPNs, teleworkers connecting directly to the Internet from home, etc.

An interesting new breed of "personal firewalls" have surfaced that are installed on Windows and allow both beginner and expert users to protect their PCs. The risk faced by the home user on the Internet is analyzed in [4]. Basically, there is a significant risk of information being stolen or destroyed; of your PC being misused to attack others, or used to access sensitive (e.g., banking) software; or simply of PC/network resources wasted; and it needs to be addressed.


Precautionary Measures

There are a few measures that Windows users should take, whether they install a firewall or not:

Key Criteria in Choosing a Personal Firewall

  1. Effectiveness of security protection: penetration, Trojans, controlling leaks, denial of service.
  2. Effectiveness of intrusion detection: few false positives, alerting of dangerous attacks.
  3. Effectiveness of reaction: discovering identity of attacker, blocking attacks, ease of use.
  4. User interface: ease of use, instructiveness, simplicity, quality of online help. Can rules be easily added/removed/checked? Does the interface suit the way you use your PC? Do you understand the questions the software asks and what it is doing?
  5. Price: how much are you willing to pay initially, and each year for support/updates?

How Did we Test Effectiveness?

  1. Ping and accessing shares to and from the test host.
  2. A powerful, well-known "remote-control" Trojan (Netbus Pro v2.1) [3] was installed on the system on a nonstandard port (to make detection more difficult), he Netbus server started and attempts made to connect from a remote system.
  3. The telnet server was enabled on the Win2K test PC. It was then attempted to connect to this service remotely. It is not recommended that you enable telnet; we do this purely for testing purposes.
  4. An nmap [2] scan was run against each product (see below), to check that incoming ports were effectively blocked.

Note on Trojans

Product Tests

Each test report is in a separate document, so that we can continue testing new products and updating the existing results.

McAfee Firewall

PGP7 Firewall
NAI are no longer selling PGP (see also
"Network Associates recently announced the closure of PGP Security business unit and the integration of some of its product into other business units. PGP encryption is retained and continues to be the encryption engine within McAfee E-Business Server product line. PGP's Desktop Firewall and VPN client products are continuing as McAfee products. The bundle called PGP Corporate Desktop will be put into maintenance mode. PGPmail, PGPdisk and file, PGPwireless, and PGP Keyserver are also being put into maintenance mode." 




Norton (equivalent to Symantec Personal Firewall)


ZoneAlarm Pro
Trend Micro and Zone Labs are involved in a joint venture, joining ZoneAlarm and PC-cillin together. This good news was brought to us by one of our regular readers.


Tiny (see also Uzi Paz's remarks)


Privacyware Personal Firewall


Personal Firewalls Not Tested, Or Tests Abandoned

AtGuard by WRQ was purchased by Symantec, changed and resold as Norton Firewall, but the original AtGuard has a loyal following on the Net (i.e., despite its being over a year old users are convinced it is a very good firewall and worth discussing in detail). It can block incoming and outgoing connections.

PC Viper Personal Firewall (
This only seems to be available for Win95/98/ME. At the moment I have NT4 and Win2K test PCs available, so no tests can be made of this product for now. A review can be found on  

McAfee Firewall
This product is based on Conseal's Private Desktop ( We only tested the McAfee product, since it is presumed that the Conseal product will no longer evolve. Note that Conseal's "PC Firewall" is a different product - see previous section.

Internet Firewall 2000/IF2K (
Although it installed without error on the test NT4 SP5 system, it would not start, giving the error "Internet Firewall 2000 Failed. Make sure you have full system privileges and try again." I was logged in with Administrator privileges. No further testing was conducted with this product.

Biodata's Sphinxwall Firewall ( V1.0 build 599 was tested briefly:

After reboot, the LAN adapter was dead! No local communications would work, all bindings to the local LAN were missing, and all TCP/IP settings were lost.

De-installation was very painful. It was hours before the computer was fully functional again. The procedure that works best was: In Control Panel -> Network settings, remove the Biodata protocol, reboot. Then try to remove any Biodata adapters left, reboot. Remove your LAN adapter, reboot. Deinstall SPHINX, reboot. Search the registry for SPHINX entries and reboot. Add your LAN adapter again and set the IP address or other TCP settings, reboot. Check that TCP/IP is not disabled under the network bindings.

HackerTracer (
The trial version does not work on NT or Win2k, so no tests were carried out. An NT version is coming soon and we hope to test it. 

CyberwallPLUS-WS  (
This heavy weight runs on NT and Win2k. Evaluations can only be downloaded from V6.03 was downloaded and installed on an NT4 SP4 system, but the tests had to be abandoned:

Smoothwall v0.9.6   (
"SmoothWall is a Linux cut down to a complete minimal automated installation, providing out of the box security & functionality as a router and firewall, managed by platform independent web browsers. No prior Linux experience required."

Freedom 2.0 (
This free tool from Zero-Knowledge sounds interesting. It contains a personal firewall, form filler, cookie manager, ad manager and keyword alert. It has a few unusual requirements though: no NT support (Windows 95, 98, 2000 and ME are OK) and Freedom will not work behind a firewall if it is configured to deny access to certain data ports (51100 TCP/UDP, 51101 UDP, 51102 TCP, 51107 TCP, 51109 UDP). This means it won't work in my existing test setup, but hopefully I'll get a chance to try it in the future.

Internet Connection Sharing
Windows 98 SE (second edition) and Win2000 include the Internet Connection Sharing (ICS) tool, which can be configured on a gateway PC between a cable modem and a hub of internal PCs. Apparently it provides some measure of protection against external attack, but no firewall is included. It hasn't been tested as part of this review, but is mentioned for reference purposes.

Another report examines integrity checkers and Trojan detectors:

Complementary products to Personal Firewalls

ADSL and hardware firewalls are covered in separate papers:

ADSL: Security Risks and Countermeasures

ADSL Firewalls: Product Reviews

Tests of more Products

I had planned to test the following products but sponsorship has dried up, and I mostly use ADSL hardware firewalls now myself.:


Feature Comparison

Product Security Effect- iveness Restricts Java Applets & ActiveX File/
Registry Integrity Checking
Regular (online) Updates
BlackICE Incoming ports only No No Yes, 1st year
eSafe Low - No No
Norton High Yes No Yes, 1st year
ZoneAlarm High, if understood No No No
McAfee Good, if understood No No No
VirusMD Very low No No Yes
PGP7 High No No automatic function, but important files could be PGP signed. Possible
ZoneAlarm Pro High No, but does restrict dangerous email attachments. No No
Sygate High No No No
Tiny High No No No
Conseal High, if understood No No No
Privacyware Incoming ports only No No No
TermiNET High, if understood No No No


Product Allows Custom Rules Platform Other tools/ features included
BlackICE Possible NT, Win2k buggy -
eSafe Yes Win9x, NT, Win2k Sandbox, antivirus (Low quality)
Norton Yes Win9x, NT, Win2k -
ZoneAlarm - Win9x, NT -
McAfee Yes Win9x, NT.
Does not work with Win2k + dialup.
VirusMD No Win9x, NT, Win2k -
PGP7 Yes Mac, Win9x, NT, Win2k File, disk, folder, email, icq encryption. VPN. File wiping. Fully functional MAC version.
ZoneAlarm Pro Yes, but could be more flexible. Win9x ME, NT,
Win2k buggy.
MailSafe: useful checking for dangerous Mail attachments.
Sygate Yes, but could be more flexible Win9x, ME, NT, Win2k Time limited and screen saver limited rules.
Tiny Yes Win9x, NT, Win2k Time periods for rules, small footprint, syslog logging, remote admin.
Conseal Yes Win9x ME, NT, Win2k -
Privacyware Yes Win2k, others unknown -
TermiNET Yes Win9x ME, NT, Win2k Available in 11 languages.

Note: None of these products restricts JScript, VBScript or JavaScript in Web browsers. ZoneAlarm Pro does restrict them in email attachments.

Price Comparison

Product Personal
BlackICE $39 $39 $19.95
eSafe Free ?
Norton $50.95 $50.95 Support: $29.95/issue of $2.95/minute
ZoneAlarm Free $20 $19.95 technical support online and by email
McAfee 10-day
VirusMD - ?
PGP7 $32- $200 $32- $200
ZoneAlarm Pro $39 $39
Sygate Free $39-$46
Tiny Free for home use $39
Conseal $49-305 $49-305 Updates: 60% of cost price
Privacyware $14.95 $14.95
Terminet $39-49 $39-49

Usability Comparison

Product Ease of Use User Level
BlackICE Excellent All
eSafe Bad Advanced
Norton Very good All
ZoneAlarm Good Advanced
McAfee Very good All, if limitations understood.
VirusMD Bad -
PGP7 Good Advanced
ZoneAlarm Pro Very good All
Sygate Good All (v4 or later)
Tiny Quite good Knowledgeable-Advanced.
Annoying buggy error dialog boxes in Win2k, but evolving fast and interesting.
Conseal Good Advanced
Privacyware Good Knowledgeable-Advanced
TermiNET Good Knowledgeable-Advanced

Corporate Features

There was a request to cover more aspects that interest use of Personal Firewalls in a business environment. Some vendors offer special versions for the corporate environment; these are indicated in brackets.

Product Central  policy
Runs as service


yes, with predefined update times.
Upgrades can be pushed too.
yes yes
eSafe no no yes
(Symantec Desktop Firewall)
no no yes
ZoneAlarm no no
McAfee no no yes
VirusMD no no no
(admin tool)
yes: LDAP or download no yes
ZoneAlarm Pro yes no yes
(Enterprise Network)
yes yes yes
Tiny no yes yes
Conseal no no yes
Privacyware no no -
Terminet no no no

Product Central logging/
Create pre-configured
install kits?
Prevent user from changing
selected options (lockdown)?
yes yes yes
eSafe no no no
(Symantec Desktop Firewall)
no yes no
ZoneAlarm no no no
McAfee no no no
VirusMD no no no
(admin tool)
SMTP email yes yes
ZoneAlarm Pro yes yes
(Enterprise Network)
SMTP email yes password protection
Tiny syslog no yes
Conseal no no no
Privacyware no no no
TermiNET no no password protection

Other issues that may interest the corporate user are:

Summary and Conclusions


Personal firewalls are useful and should be considered by any Windows user who directly connects to hostile networks, such as the Internet. They have a role to play in both the corporate and SOHO (Small Office/Home Office) markets. Although many products are immature, there have been major advances over recent months. All these products need to be subjected to more scrutiny and given time to prove their security effectiveness. None of these products is provided with source code.


Free firewalls

SOHO (Small Office/Home Office) users willing to pay

Windows 2000 users may prefer Sygate, Norton or Tiny, until ZoneAlarm Pro, BlackICE and McAfee have sorted their problems out.

Laptop users may not like Norton or McAfee, which won't allow powersaving modes to be used (Sygate and Tiny, for example, allow Win2k to hibernate).

Corporate users would probably be interested in ZoneAlarm Pro, PGP7, BlackICE or Sygate due to their support for centralized configuration and rollout. Tiny Personal Firewall allows remote administration.


  1. [SecurityPortal is offline]
  2. Nmap

  3. Netbus Pro: Remote-control program often used as an attack tool to control remote PCs.

  4. [SecurityPortal is offline]
  5. Toy Box (a collection of tools that may help clean a system possessed by Trojans)
  6. Best Comparative Personal Firewall Review
  7. ADSL: Security Risks and Countermeasures - Sean Boran
    ADSL Firewalls: Product Reviews - Sean Boran
  8. Free remote testing of your open ports:
    Neoworx port probe:

Other articles that may provide a different perspective:

Personal Firewalls Under Fire - Gary Bahadur



Many readers provided feedback and useful inputs. Thanks to Interceptor, Tom Chmielarski, Larry Adams, Geoffrey Kidd, Thomas Rude, Paul Rarey, Bill Curnow, Lissi Paffrath, Peter Klammer, Rjane Forr, Michael Semling, Nathan Legg, Lindsay Macauley, Jammie Czaplewski, Henry Markus, Harry Choughcon, John Ceddie, Eagle10, Roderick Davies and the readers specifically noted below.

Comments from readers  

About the Author

Sen Boran is an IT security consultant based in Switzerland and the author of the online IT Security Cookbook.

Copyright 2002, Sen Boran   Last Update: 16 avril, 2002