Hi,
I'm trying to redirect incoming tcp connections for port 222 to local
port 22 (because I will dnat incoming connections for port 22 to another
destination).
I've set the following ruleset, and logs shows that the port get value 0
instead of 22.
What am I doing wrong ?
Thanks
Christophe
[ 7621.325382] IN=eth0 OUT=
MAC=08:00:51:20:44:5b:08:00:27:fe:42:1e:08:00 SRC=172.25.231.37
DST=172.25.231.5 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=18010 DF PROTO=TCP
SPT=54872 DPT=222 WINDOW=14600 RES=0x00 SYN URGP=0
[ 7621.325785] IN=eth0 OUT=
MAC=08:00:51:20:44:5b:08:00:27:fe:42:1e:08:00 SRC=172.25.231.37
DST=172.25.231.5 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=18010 DF PROTO=TCP
SPT=54872 DPT=0 WINDOW=14600 RES=0x00 SYN URGP=0
# nft list ruleset -nn
table ip filter {
chain input {
type filter hook input priority 0;
oifname "lo" accept
ct state established,related accept
ct state new tcp dport 22 log accept
ip protocol icmp accept
udp dport { 138, 1534, 137, 17500, 67, 631, 68} drop
log reject with icmp type host-prohibited
}
}
table ip nat {
chain prerouting {
type nat hook prerouting priority 0;
tcp dport 222 counter packets 1 bytes 60 log dnat :22
}
chain postrouting {
type nat hook postrouting priority 0;
ip saddr 192.168.0.3 oif eth1 masquerade
}
}
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