tcpdump

I have two FreeBSD boxes running 13.0 and 14.0 respectively, and I'm comparing the behavior of those boxes in similar scenarios. One scenario exhibit significant discrepancy, and I'd like to ask the community if anyone else has seen (or can reproduce) such discrepancy, and how can it be...

Supposing I have several loopback interfaces: lo0 and lo1. lo0 is configured implicitly by the system, configuration of lo1 follows: /etc/rc.conf cloned_interfaces="lo1:sticky" ifconfig_lo1="inet 192.168.30.1 netmask 255.255.255.0" ifconfig_lo1_alias0="inet 192.168.30.2/32"...

Hi, I have a FreeBSD 13.1 released installed on a machine and there is NO firewall service running on it, it has two interfaces one with public IP and the other with private IP. I can not ssh into the machine from a public IP apart from the public IP of the same network and I can ssh into the...

Hello! I have an issue wirth network conection to ovh mail servers from my side. I've changed ISP and the problem still exists. I don't have any issues with other services and mail servers as well. I've got one external interface with several IPs. I've got several VM on bhyve on this server. I...

Hi, We've encountered tons of packets being dropped using command netstat -s on FreeBSD-10.1. The one whose timeout value keeps on increasing is 'rexmit timeout' . Here is the list of timeout / dropped packets. http://prntscr.com/aod4f2 The server is on 4x1Gbps LACP port . We've also tried...

Hello! I have very strange issue with ipfw0. My kernel has options IPFIREWALL and IPFIREWALL_VERBOSE but when I try listen ipfw0 interface see warning in my console: tcpdump: WARNING: ipfw0: That device doesn't support promiscuous mode (BIOCPROMISC: Invalid argument) What is I can fix for...