[Firehol-support] Strange problem...

[Sim]

Hello!

Sometimes I have this strange problem in my Firehol:

Dec 14 12:00:53 firewall kernel: [89443.304634] ''IN-www2fw':'IN=ppp0
OUT= MAC= SRC=213.210.140.239 DST=77.19.33.12 LEN=40 TOS=0x00
PREC=0x00 TTL=237 ID=65259 PROTO=TCP SPT=11775 DPT=9999 WINDOW=8011
RES=0x00 RST URGP=0

Where:

- SRC (external IP)
- DST (my local IP)
- DPT (my TCP Service running on server and connected to remote client)

This is my firehol.cfg
######################################

server_myservice_ports="tcp/9999"
client_myservice_ports="default"

interface ppp+ www2fw

        policy drop

        server ICMP accept
        server "ssh" accept
        server "ftp" accept
        server "myservice" accept

        client all accept

interface eth1 [..]

######################################

Another strange log is:

Dec 14 12:06:02 firewall kernel: [89751.639874] ''IN-www2fw':'IN=ppp0
OUT= MAC= SRC=80.15.15.15 DST=77.19.33.12 LEN=160 TOS=0x00 PREC=0x00
TTL=50 ID=56371 DF PROTO=TCP SPT=9999 DPT=59529 WINDOW=2896 RES=0x00
ACK PSH URGP=0

Where

- SRC (external IP)
- DST (my local IP)
- SPT (his TCP Service running on remote client connected with my server)

Have you any idea?

Very thanks!