Thanks a lot for your message. This is output of iptables -nvL:
Chain INPUT (policy DROP 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
33 1788 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:8080
33 1747 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:8021
0 0 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:8080
0 0 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:8021
0 0 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:8080
0 0 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:8021
0 0 DROP tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:5080 STRING match "VaxSIPUserAgent/3.1" ALGO name bm TO 65535
0 0 DROP udp -- * * 0.0.0.0/0 0.0.0.0/0 udp dpt:5080 STRING match "VaxSIPUserAgent/3.1" ALGO name bm TO 65535
0 0 DROP udp -- * * 0.0.0.0/0 0.0.0.0/0 udp dpt:5060 STRING match "VaxSIPUserAgent/3.1" ALGO name bm TO 65535
0 0 DROP tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:5060 STRING match "VaxSIPUserAgent/3.1" ALGO name bm TO 65535
0 0 DROP tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:5080 STRING match "VaxIPUserAgent" ALGO name bm TO 65535
0 0 DROP udp -- * * 0.0.0.0/0 0.0.0.0/0 udp dpt:5080 STRING match "VaxSIPUserAgent" ALGO name bm TO 65535
0 0 DROP udp -- * * 0.0.0.0/0 0.0.0.0/0 udp dpt:5060 STRING match "VaxIPUserAgent" ALGO name bm TO 65535
0 0 DROP tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:5060 STRING match "VaxSIPUserAgent" ALGO name bm TO 65535
2 880 DROP udp -- * * 0.0.0.0/0 0.0.0.0/0 udp dpt:5080 STRING match "friendly-scanner" ALGO name bm TO 65535
8 3500 DROP udp -- * * 0.0.0.0/0 0.0.0.0/0 udp dpt:5060 STRING match "friendly-scanner" ALGO name bm TO 65535
0 0 DROP tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:5080 STRING match "friendly-scanner" ALGO name bm TO 65535
0 0 DROP tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:5060 STRING match "friendly-scanner" ALGO name bm TO 65535
371K 109M f2b-freeswitch-404 all -- * * 0.0.0.0/0 0.0.0.0/0
360K 107M ACCEPT all -- * * 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED
205 15784 ACCEPT icmp -- * * 0.0.0.0/0 0.0.0.0/0
32 1341 ACCEPT all -- lo * 0.0.0.0/0 0.0.0.0/0
16 700 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:22
17 900 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:6868
180 9952 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:443
42 2268 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:80
1 40 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:22
0 0 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:80
1 40 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:443
9 484 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:5060
493 279K ACCEPT udp -- * * 0.0.0.0/0 0.0.0.0/0 udp dpt:5060
6070 446K ACCEPT udp -- * * 0.0.0.0/0 0.0.0.0/0 udp dpts:16384:32768
0 0 ACCEPT icmp -- * * 0.0.0.0/0 0.0.0.0/0 icmptype 8
0 0 ACCEPT udp -- * * 0.0.0.0/0 0.0.0.0/0 udp dpt:1194
0 0 ACCEPT all -- * * 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED
3738 521K REJECT all -- * * 0.0.0.0/0 0.0.0.0/0 reject-with icmp-host-prohibited
0 0 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:8021 ctstate NEW,ESTABLISHED
0 0 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:8021
Chain FORWARD (policy DROP 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
0 0 REJECT all -- * * 0.0.0.0/0 0.0.0.0/0 reject-with icmp-host-prohibited
Chain OUTPUT (policy ACCEPT 390K packets, 412M bytes)
pkts bytes target prot opt in out source destination
Chain f2b-freeswitch-404 (1 references)
pkts bytes target prot opt in out source destination
371K 109M RETURN all -- * * 0.0.0.0/0 0.0.0.0/0
Chain f2b-freeswitch-dos-tcp (0 references)
pkts bytes target prot opt in out source destination
0 0 RETURN all -- * * 0.0.0.0/0 0.0.0.0/0
Chain f2b-freeswitch-dos-udp (0 references)
pkts bytes target prot opt in out source destination
0 0 RETURN all -- * * 0.0.0.0/0 0.0.0.0/0
Chain f2b-freeswitch-ip-tcp (0 references)
pkts bytes target prot opt in out source destination
0 0 RETURN all -- * * 0.0.0.0/0 0.0.0.0/0
Chain f2b-freeswitch-ip-udp (0 references)
pkts bytes target prot opt in out source destination
0 0 RETURN all -- * * 0.0.0.0/0 0.0.0.0/0
Chain f2b-freeswitch-tcp (0 references)
pkts bytes target prot opt in out source destination
0 0 RETURN all -- * * 0.0.0.0/0 0.0.0.0/0
Chain f2b-freeswitch-udp (0 references)
pkts bytes target prot opt in out source destination
0 0 RETURN all -- * * 0.0.0.0/0 0.0.0.0/0
Do you see something wrong? I disabled iptables to see if it works but nothing happened. What do you think?