firewall question

This is a discussion on firewall question within the Tech Board forums, part of the Community Boards category; my firewall is logging "Incoming ICMP': Blocked: In ICMP [8] Echo Request" at a rate of about 8/min 24/7 from ...

  1. #1
    Registered User
    Join Date
    Jan 2002
    Posts
    552

    firewall question

    my firewall is logging "Incoming ICMP': Blocked: In ICMP [8] Echo Request" at a rate of about 8/min 24/7 from various ips (there doesnt seem to be any repeats, at least when i quickly glanced for repeats).

    also, for about a period of ten minutes, I had hundreds of this logged "'Other ICMP': Blocked: In ICMP [3] Destination Unreachable, c-24-99-16-9.atl.client2.attbi.com [24.99.16.9]->localhost, Owner: Tcpip Kernel Driver" all from the same ip,

    Should I be concerned about this?
    C Code. C Code Run. Run Code Run... Please!

    "Love is like a blackhole, you fall into it... then you get ripped apart"

  2. #2
    Pursuing knowledge confuted's Avatar
    Join Date
    Jun 2002
    Posts
    1,916
    Hmmm... have you been browsing pr0n and/or warez sites? Have you downloaded anything?

    No need to answer. If you have, you might want to run a virus scan - something outbound might be causing it.

    Other than that... can't help ya. Have you tried Google?
    Away.

  3. #3
    Mayor of Awesometown Govtcheez's Avatar
    Join Date
    Aug 2001
    Location
    MI
    Posts
    8,825
    I keep getting the same thing. I ran AVG, but it didn't pick anything up. For now, I'm just going to let it keep throwing out packets.

    I'm getting one inbound every 30 seconds or so, and every once in awhile (maybe every 5 packets), it tries to send a TCP packet out.

  4. #4
    Registered User TravisS's Avatar
    Join Date
    Jun 2002
    Posts
    536
    It's not entirely unnormal (yeah, that's a word..) to get pinged a lot. From a single IP might be a bit odd though, unless that IP is your ISP. A lot of ISP's will ping their customers quite a bit. 8/min is nothing I'd be too worried about, possibly because you're blocking it it's trying again? Not sure. It's when you get pinged at about 40k/second (yes, it's very possible) when you might want to worry

  5. #5
    Registered User major_small's Avatar
    Join Date
    May 2003
    Posts
    2,787
    once i got bored and tried to lock up my CPU, so i pinged 127.0.0.7 10k/sec and it worked within about 5 seconds
    Join is in our Unofficial Cprog IRC channel
    Server: irc.phoenixradio.org
    Channel: #Tech


    Team Cprog Folding@Home: Team #43476
    Download it Here
    Detailed Stats Here
    More Detailed Stats
    52 Members so far, are YOU a member?
    Current team score: 1223226 (ranked 374 of 45152)

    The CBoard team is doing better than 99.16% of the other teams
    Top 5 Members: Xterria(518175), pianorain(118517), Bennet(64957), JaWiB(55610), alphaoide(44374)

    Last Updated on: Wed, 30 Aug, 2006 @ 2:30 PM EDT

  6. #6
    Registered User TravisS's Avatar
    Join Date
    Jun 2002
    Posts
    536
    Originally posted by major_small
    once i got bored and tried to lock up my CPU, so i pinged 127.0.0.7 10k/sec and it worked within about 5 seconds
    Yarp, fun eh? The company I work for is developing a Firewall and testing it has been great fun . One of the guy's I work with created an uber pinger that shoots out around 50k pings per second and OMG! The second he starts hitting my machine it locks up, stops pinging and I regain control. Ping floods can be a scary thing...

    hence why I say not too worry too much about 8/min

  7. #7
    Registered User major_small's Avatar
    Join Date
    May 2003
    Posts
    2,787
    it's fun when you ping your own machine... it locks up so you can't stop the program that's doing the pinging, so when the CPU gets any free time it runs the program some more and locks up again
    Join is in our Unofficial Cprog IRC channel
    Server: irc.phoenixradio.org
    Channel: #Tech


    Team Cprog Folding@Home: Team #43476
    Download it Here
    Detailed Stats Here
    More Detailed Stats
    52 Members so far, are YOU a member?
    Current team score: 1223226 (ranked 374 of 45152)

    The CBoard team is doing better than 99.16% of the other teams
    Top 5 Members: Xterria(518175), pianorain(118517), Bennet(64957), JaWiB(55610), alphaoide(44374)

    Last Updated on: Wed, 30 Aug, 2006 @ 2:30 PM EDT

Popular pages Recent additions subscribe to a feed

Similar Threads

  1. Win Xp firewall detection
    By wind_addict in forum Windows Programming
    Replies: 1
    Last Post: 04-30-2008, 12:13 PM
  2. Debugging question
    By o_0 in forum C Programming
    Replies: 9
    Last Post: 10-10-2004, 05:51 PM
  3. Question about Linux Firewall
    By naruto in forum Linux Programming
    Replies: 6
    Last Post: 07-25-2004, 12:39 PM
  4. Question...
    By TechWins in forum A Brief History of Cprogramming.com
    Replies: 16
    Last Post: 07-28-2003, 09:47 PM
  5. Question, question!
    By oskilian in forum A Brief History of Cprogramming.com
    Replies: 5
    Last Post: 12-24-2001, 12:47 AM

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21