Editors' Rating:
Average User Rating:
out of 30 votes
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Quick Specs

File Size:
Date Added:
January 16, 2014
Operating Systems:
Windows XP/2003/Vista/Server 2008/7
Total Downloads:
Downloads Last Week:
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Additional Requirements:
Not available

Editors' review

PeerBlock is an advanced IP blocking utility. In plain words, it lets you control how your PC interacts with other computers over the Internet, letting you block servers and sites known to be troublesome or even dangerous. It lets you choose what to block, and you can also import or create your own lists. PeerBlock is open source freeware maintained by the PeerBlock project.

When you first run PeerBlock, a wizard helps you set up its options, though you can change them later. These include what you want to block; by default, PeerBlock blocks anti-P2P organizations, ads, spyware, and educational institutions and universities. There's also a checkbox labeled Always Allow HTTP. This option always enables connections over ports 80 and 443 of your PC, even if they're on your blocklist. These two ports are usually for Web browsing, but other programs access them, too. If you're starting to feel your head spin, don't worry! Each step includes a paragraph-long Recommendation explaining your options. If you need more help, the online User Guide and other documentation have it. But we quickly set up PeerBlock's update scheduler and other options and clicked Finish. PeerBlock immediately downloaded an updated list of known threats and troublemakers, displaying the data in the program's simple interface. While PeerBlock's face is one only a developer could love, we appreciate its logical layout and efficient control suite. PeerBlock's interface has two tabs, Protection and Settings, with the Settings tab stretching over two pages. Right-clicking PeerBlock's system tray icon opens its main console; left-clicking it opens a context menu with instant access to Enable and Disable controls, allow HTTP options, basic but useful controls like always on top, and support. If we changed our blocked list, PeerBlock automatically updated its settings and downloaded the latest correct definitions.

Of course, most of the time you won't be aware that PeerBlock is doing its thing, but if you need convincing, just activate it and browse to some perfectly ordinary sites, like major media sites. Then simply check PeerBlock's log view to watch servers trying to slip ads under your eyes. Highly recommended.

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All User Reviews
  • All Versions:


    out of 30 votes

    • 5 star: 14
    • 4 star: 7
    • 3 star: 2
    • 2 star: 1
    • 1 star: 6
  • Current Version:


    out of 4 votes

    • 5 star: 2
    • 4 star: 0
    • 3 star: 1
    • 2 star: 0
    • 1 star: 1
  • My rating:

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    Results 1-4 of 4

  • 3 stars

    "It needs more servers."

    September 17, 2014   |   By Son_of_Earth

    Version: PeerBlock 1.2


    Blocks the dark side of the internet.
    Category lists can be downloaded. Spyware/botnets, hijacked, anti-p2p, ect.
    Add your own lists.


    Only 1 update per week.
    Icon is very ugly if you use large icons on desktop (pixelated).

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  • 5 stars

    "great software - use it and love it."

    June 01, 2014   |   By ChoiceVoice

    Version: PeerBlock 1.2


    -very, very light on system.
    -has portable to try out.
    -many lists to choose from - also excellent default lists.
    -really illuminating to see how many odd ips your system are hooking up with automatically (even when you're not on the internet). and you can block them.
    -good malware and adware protection.
    -good for p2p enthusiasts.
    -now good for 64 bit computers.


    -need ipv6 support.
    -does not run as service, so harder to autostart. i used task scheduler to auto start it and works perfect (win 7, 64 bit). google it to find out how.(i use portable, maybe that's why it wouldn't run as service lol... ???).


    excellent addition to layered protection. know who your system is talking too. i used a comodo product a couple years ago (long since uninstalled), and was surprised to see my system still hooking up to them: not any more.

    Updated on Jun 1, 2014

    lol, you need to look up fascism. the program is independent of the I-blocklist's developer(s). and there are different developers for different lists. you choose what to download or to run. you can even make up your own lists. one of the purposes of this software was to stop large corporations from locating and identifying you if you use p2p networks, and to stop large corps advertisers from hooking up to your system. i receive an active log of all connections and can research them and block or unblock them. so, you can see that this program is actually anti-fascist (though i doubt you understand the reasoning as to why). oh, i guess it is open source, perhaps you'll call it communist now.

    likely, you can't be this obtuse and must work for an entertainment establishment that wishes to track copyrite violations and sue people that use p2p software. again, the irony is you are defaming this company and are opening yourself up to a libel lawsuit yourself. putz.

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  • 5 stars

    "Awesome little program"

    February 18, 2014   |   By hypernoobie

    Version: PeerBlock 1.2


    -You will have control of what is or is not blocked.
    -Simple pre-made lists are available for the not so tech-savy.


    -Some advanced technical knowledge, e.g. understanding how IP addresses work, is needed in order to tailor the block list for each individual.


    As for the review written by RnSpn on Jan/24/2014, you haven't done your homework. You are not forced to block anything. You can visit any website and share any bit of information you would like while using Peerblock. You can create your own blocking lists. Or you can edit a previously made template. Or for simplicity, you can just use whatever lists are already created and call it good.

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  • 1 stars

    "Fascist Software"

    January 24, 2014   |   By RnSpn

    Version: PeerBlock 1.2


    Might protect you, assuming you can trust the provider of the blocklists.


    PeerBlock is in a revenue-sharing agreement with I-blocklist, which collects and publishes IP addresses of sexual minorities, and the general manager has expressed interest in expanding this to include homosexuals and BDSM fans.


    I wouldn't use PeerBlock because I have no reason to trust people who show no concern for human rights. What is their real agenda?

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