Many thanks, for your links for checking the problem. I have saw your answers today, because after a change of ISP my MX-record was wrong written at my used domain on this mailing list.
I have changed interfaces to ############################################################################### ?FORMAT 2 ############################################################################### #ZONE INTERFACE OPTIONS net $NET_IF dhcp,routefilter,tcpflags loc $LOC_IF routeback,bridge with params NET_IF=vmbr0 LOC_IF=vmbr1 The problem is still the failed connection of the VM guests to Icinga on the host. The local network is 192.168.1.0/24 on vmbr1. I tested from 192.168.1.70 with # nc -vz 192.168.1.66 5665 neckar.germany.com [192.168.1.66] 5665 (?) : Connection refused So I observed on 192.168.1.66 # shorewall show log | grep 192.168.1.66 Oct 14 13:51:38 Shorewall:loc-fw:REJECT:IN=vmbr1 OUT= SRC=192.168.1.70 DST=192.168.1.66 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=39891 DF PROTO=TCP SPT=59122 DPT=5665 WINDOW=29200 RES=0x00 SYN URGP=0 # shorewall show loc-fw Shorewall 5.2.3.2 Chain loc-fw at neckar - Mo 14. Okt 14:08:35 CEST 2019 Counters reset Mo 14. Okt 13:41:44 CEST 2019 Chain loc-fw (1 references) pkts bytes target prot opt in out source destination 3 180 dynamic all -- * * 0.0.0.0/0 0.0.0.0/0 ctstate INVALID,NEW,UNTRACKED 3 180 tcpflags tcp -- * * 0.0.0.0/0 0.0.0.0/0 0 0 ACCEPT all -- * * 0.0.0.0/0 0.0.0.0/0 ctstate RELATED,ESTABLISHED 0 0 ACCEPT icmp -- * * 0.0.0.0/0 0.0.0.0/0 3 180 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:5665 /* ICINGA */ 0 0 DROP all -- * * 0.0.0.0/0 0.0.0.0/0 ADDRTYPE match dst-type BROADCAST 0 0 DROP all -- * * 0.0.0.0/0 0.0.0.0/0 ADDRTYPE match dst-type ANYCAST 0 0 DROP all -- * * 0.0.0.0/0 0.0.0.0/0 ADDRTYPE match dst-type MULTICAST 0 0 LOG all -- * * 0.0.0.0/0 0.0.0.0/0 LOG flags 0 level 6 prefix "loc-fw REJECT " 0 0 reject all -- * * 0.0.0.0/0 0.0.0.0/0 [goto] At rules I have just configured Ichinga with ICINGA(ACCEPT) $FW loc ICINGA(ACCEPT) loc $FW But I tried also ICINGA(ACCEPT) loc:192.168.1.70 net ICINGA(ACCEPT) net loc:192.168.1.70 or ICINGA(ACCEPT) $FW net ICINGA(ACCEPT) net $FW with the same result. So I haven't still foung a solution. Best regards Andreas
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