Snort mailing list archives
Re: trouble with inline mode
From: VM PC <packetstack () gmail com>
Date: Wed, 27 Aug 2014 10:06:27 -0400
Hello Richard, If possible, add another interface to your sensor for management and remove the IP addresses from the interfaces used for inline operation. I have had many problems before when doing testing and using only two interfaces. The thing that stands out is that you are trying to communicate between two different networks. Are you also routing/nat on that snort sensor? On Wed, Aug 27, 2014 at 9:52 AM, Richard Smollett <yawningdogge () gmail com> wrote:
IP setup looks like this. root@snort:~# ifconfig eth0 Link encap:Ethernet HWaddr 08:00:27:fd:b5:c4 inet addr:*172.28.61.104* Bcast:172.28.61.127 Mask: *255.255.255.128* inet6 addr: fe80::a00:27ff:fefd:b5c4/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:472894 errors:5 dropped:15 overruns:0 frame:0 TX packets:15266 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:129789824 (123.7 MiB) TX bytes:2332609 (2.2 MiB) Interrupt:10 Base address:0xd020 eth1 Link encap:Ethernet HWaddr 08:00:27:97:66:ff inet addr:*192.168.123.1* Bcast:192.168.123.255 Mask: *255.255.255.0* inet6 addr: fe80::a00:27ff:fe97:66ff/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:14 errors:0 dropped:0 overruns:0 frame:0 TX packets:438796 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:962 (962.0 B) TX bytes:123829936 (118.0 MiB) Interrupt:9 Base address:0xd240 The eth0 interface is the outside and eth1 is inside. I'm starting snort with this command. snort --daq afpacket -i eth0:eth1 --daq-mode inline -c /etc/snort/snort.conf But I still cannot ping an inside host from the outside. I can ping between the snort device and inside/ouside hosts. If I ping an inside host from the outside, tcpdump shows the icmp echo request arriving but no reply. Inside host ip is 192.168.123.2. Can anyone recommend some other troubleshooting steps or suggest where I may have left anything out of the setup? ------------------------------------------------------------------------------ Slashdot TV. Video for Nerds. Stuff that matters. http://tv.slashdot.org/ _______________________________________________ Snort-users mailing list Snort-users () lists sourceforge net Go to this URL to change user options or unsubscribe: https://lists.sourceforge.net/lists/listinfo/snort-users Snort-users list archive: http://sourceforge.net/mailarchive/forum.php?forum_name=snort-users Please visit http://blog.snort.org to stay current on all the latest Snort news!
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Current thread:
- trouble with inline mode Richard Smollett (Aug 27)
- Re: trouble with inline mode VM PC (Aug 27)
- Re: trouble with inline mode James Lay (Aug 27)