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SFOS 16.01.0 known IPS issue - Work arounds?

Darrian Churchill

Hey all,

Anyone have any other work around for the known IPS issue (NC-8238   [IPS] IPS Service drops legitimate traffic in very high load average conditions)? The IPS service seems to constantly fail to start and causes this issue from what I can see (CPU usage and memory usage spike all over the place). As my work around, I set the IPS service to Stop, performance and traffic return to normal. Obviously this isn't a great solution... Anyone have anything better? 

I'd like to know when this will be resolved too, seems to me to be a rather big problem. I may actually just roll back to 15 if this is going to be a thing for a while.

Thanks !!



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  • 0 in reply to Darrian Churchill

    Hello,

     

    I'm in the same boat as Darrian.  I see the same warning messages as in his screenshot.  It seems to be cyclical though.  Sometimes it will show all is normal and IPS was started fine, then within a few minutes I'll see this warning pop up again.  Also, I'm not having the CPU or memory utilization he is though, mine has not risen above 30%.

     

    I'm running XG 16.01.2 on a dedicated PC.  It's a new install that has very little config on it, as I've been trying to get this working before I complicated things.  I've tried reboots, stopping and starting the IPS service, and now I've re-installed the entire firewall software.  I've also tried what was suggested in this post with no results: https://community.sophos.com/products/xg-firewall/f/intrusion-prevention/10897/ips-engine-dead

     

    Has anyone figured out how to get this working?

     

    Thanks,

    Jared

  • 0 in reply to Jared Mathis

    Hi All,

    who is experiencing this issue, could open a ticket with the Support and report the ticket number to ?

    The IPS problem should be fixed ASAP. I am sure that this is a bug and it occurs only on some systems.

    Thanks

  • 0 in reply to lferrara

    Thanks Iferrara,  as soon as the Contact Support link on Sophos's website works again, I'll submit a ticket.  I take it then that no one has figured this out?

    I did discover one additional piece of information.  My CPU and Memory utilization would spike between 15-30% continually.  Once I just turned off the IPS service, it settled down to a constant value with no spiking at all.  Can't remember the exact percentage, I think it's somewhere between 5-10%.

    Thanks,

    Jared

  • 0 in reply to Jared Mathis

    Ok, made it in, and I got the below.  So unless there is someone else out there with an enterprise account, willing to ask on my behalf?

    "Home User

    Important: We currently do not provide phone or email support for our free products and tools.

    You can find online documentation and videos as well as support through Sophos Community"

     

    Would it help if I provided the exact hardware I am using?

     

    Thanks,

    Jared

     

  • 0 in reply to Jared Mathis

    Here's another question, is there a way to get into the actual Linux running Sophos?  Not just the limited Cisco'esk commands?  That way I can get see where the IPS service is failing?

     

    Thanks,

    Jared

  • 0 in reply to Jared Mathis

    Using ssh, option 5 and then 3.

  • 0 in reply to Jared Mathis

    Yeah as I stated earlier in the thread, it doesn't help that these home user licenses are guided to use the forum, and in the forum we are told to open a ticket when we cannot. 

    I'm still having this issue on the latest release of the SFOS fw. Its the pits really, multiple revisions and still a problem. I still have the same CPU spiking and ram usage as before, with the service starting and failing on a loop. Pity because other than that I love the firewall. My Cyberoam CR300ing XP at the office doesn't exhibit this behavior at all. 

  • 0 in reply to Darrian Churchill

    Here's some of the IPS.log and CSC.log in case anyone can look at it and tell me what's wrong.  Understand that I had IPS service turned off for a few days.  I just turned it on, and grabbed the logs in the IPS.log file from today to make it smaller.

    Any sleuths out there that can tell me whats wrong?

    Thanks,

    Jared

    8372.SophosLogs.zip

  • 0 in reply to Jared Mathis

    Ok, I see that the Snort process says it finishes starting successfully, however if you look at the files I posted, you see that the it is constantly being reloaded.  I'm hoping someone on this forum is able to help.

    [Dec 07 01:18:22 :30756]:readfd cdata.cpipe[1] for pid 30854 set
    INFO[30753]:Dec 07 01:18:22:s_worker.c:943:log_master_starttime:Snort start time(Success): 60 sec 220993 usec
    [Dec 07 01:18:22 :30854]:Total preallocated memory : 2036.1094KB
    [Dec 07 01:18:22 :30854]:Max memory alloc by webcat: 3732.1094KB
    [Dec 07 01:18:22 :30756]:load module: '/sbin/modprobe nf_conntrack_pktq queuenum=100 qnum=0 maxsesbytes=0 mode=0' done
    [Dec 07 01:18:22 :30756]:IPS now running
    [Dec 07 01:18:22 :30756]:Time for change master(traffic bypass): 0 sec 38 msec
    [Dec 07 01:18:22 :30756]:child 30854 dead
    [Dec 07 01:18:22 :30756]:cdata[0].lstatus for pid 30854 set
    [Dec 07 01:18:22 :30756]:IPS: child pid 30854 exited with signal 4
    [Dec 07 01:18:22 :30859]:pktq DAQ configured to inline.
    INFO[30859]:Dec 07 01:18:22:daq_pktq.c:459:InitPKTQ:msize 40000
    INFO[30859]:Dec 07 01:18:22:daq_pktq.c:464:InitPKTQ:pkt_queue with nl_fd 7 device /dev/pktq0
    [Dec 07 01:18:22 :30859]:Reload thread starting...
    [Dec 07 01:18:22 :30859]:Reload thread started, thread 0x7f206caee700 (30860)

     

    When I check the CSC log, I find these errors:

    MESSAGE Dec 07 01:18:27 [ips:3131]: do_waitpid: pid 30753 exited with status 0
    ERROR Dec 07 01:18:27 [ips:3131]: close(7) failed: Bad file descriptor
    MESSAGE Dec 07 01:18:28 [ips:3131]: Child exited with status 1
    ERROR Dec 07 01:18:28 [ips:3131]: do_stop: after_stop failed. not aborting!
    ERROR Dec 07 01:18:30 [u2d_pt_installer:3111]: nvram_get(is_eula): failed with -12
    WARNING Dec 07 01:18:30 [u2d_pt_installer:3111]: action with nofail failed
    ERROR Dec 07 01:18:30 [u2d_dr_installer:3102]: nvram_get(is_eula): failed with -12
    WARNING Dec 07 01:18:30 [u2d_dr_installer:3102]: action with nofail failed
    ERROR Dec 07 01:19:30 [u2d_pt_installer:3111]: nvram_get(is_eula): failed with -12
    WARNING Dec 07 01:19:30 [u2d_pt_installer:3111]: action with nofail failed
    ERROR Dec 07 01:19:30 [u2d_dr_installer:3102]: nvram_get(is_eula): failed with -12
    WARNING Dec 07 01:19:30 [u2d_dr_installer:3102]: action with nofail failed
    MESSAGE Dec 07 01:19:49 [ips:3131]: do_stop(): status = EXITING
    MESSAGE Dec 07 01:19:49 [ips:3131]: do_waitpid: pid 30986 exited with status 0
    ERROR Dec 07 01:19:49 [ips:3131]: close(7) failed: Bad file descriptor
    MESSAGE Dec 07 01:19:50 [ips:3131]: Child exited with status 1
    ERROR Dec 07 01:19:50 [ips:3131]: do_stop: after_stop failed. not aborting!
    ERROR Dec 07 01:20:30 [u2d_dr_installer:3104]: nvram_get(is_eula): failed with -12
    WARNING Dec 07 01:20:30 [u2d_dr_installer:3104]: action with nofail failed
    ERROR Dec 07 01:20:30 [u2d_pt_installer:3102]: nvram_get(is_eula): failed with -12
    WARNING Dec 07 01:20:30 [u2d_pt_installer:3102]: action with nofail failed
    MESSAGE Dec 07 01:21:11 [ips:3131]: do_stop(): status = EXITING

    Thanks,

    Jared

  • 0 in reply to Jared Mathis

    Hi guys,

    how much do you have on your boxes? I am a home user with 8gb on my XG and not see these type of issues, though I do have some IPS features disabled because they block/throttle download traffic.

     

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