Segue o comando para verificarmos quantas sessões estão abertas no Linux, utilizei a porta 3050 que é padrão do Firebird.
[root@srv-hp ~]# netstat -n | grep -v 139 | grep 3050
tcp 0 0 172.18.1.205:3050 172.18.1.137:3411 ESTABELECIDA
tcp 0 0 172.18.1.205:3050 192.168.0.128:1728 ESTABELECIDA
tcp 0 0 172.18.1.205:3050 172.18.1.249:3967 ESTABELECIDA
tcp 0 0 172.18.1.205:3050 172.18.1.249:3960 ESTABELECIDA
tcp 0 0 172.18.1.205:3050 192.168.0.176:1435 ESTABELECIDA
tcp 0 0 172.18.1.205:3050 172.18.1.137:3110 ESTABELECIDA
tcp 0 0 172.18.1.205:3050 192.168.0.138:1177 ESTABELECIDA
tcp 0 0 172.18.1.205:3050 192.168.0.120:1642 ESTABELECIDA
tcp 0 0 172.18.1.205:3050 172.18.1.249:4422 ESTABELECIDA
tcp 0 0 172.18.1.205:3050 192.168.0.78:1102 ESTABELECIDA
tcp 0 0 172.18.1.205:3050 172.18.1.137:3121 ESTABELECIDA
tcp 0 0 172.18.1.205:3050 172.18.1.137:3120 ESTABELECIDA
tcp 0 0 172.18.1.205:3050 172.18.1.203:1929 ESTABELECIDA
tcp 0 0 172.18.1.205:3050 192.168.0.124:1926 ESTABELECIDA
tcp 0 0 172.18.1.205:3050 172.18.1.203:1923 ESTABELECIDA
tcp 0 0 172.18.1.205:3050 192.168.0.138:1118 ESTABELECIDA
tcp 0 0 172.18.1.205:3050 192.168.0.116:1206 ESTABELECIDA
tcp 0 0 172.18.1.205:3050 192.168.0.136:1594 ESTABELECIDA
tcp 0 0 172.18.1.205:3050 172.18.1.131:1702 ESTABELECIDA
tcp 0 0 172.18.1.205:3050 192.168.0.156:1538 ESTABELECIDA
tcp 0 0 172.18.1.205:3050 172.18.1.137:3492 ESTABELECIDA
tcp 0 0 172.18.1.205:3050 172.18.1.136:1546 ESTABELECIDA
tcp 0 0 172.18.1.205:3050 172.18.1.82:3777 ESTABELECIDA
tcp 0 0 172.18.1.205:3050 172.18.1.26:1968 ESTABELECIDA
tcp 0 0 172.18.1.205:3050 192.168.0.155:1122 ESTABELECIDA
tcp 0 0 172.18.1.205:3050 192.168.0.155:1120 ESTABELECIDA
tcp 0 0 172.18.1.205:3050 192.168.0.155:1121 ESTABELECIDA
tcp 0 0 172.18.1.205:3050 172.18.1.108:1339 ESTABELECIDA
tcp 0 0 172.18.1.205:3050 192.168.0.119:1196 ESTABELECIDA
tcp 0 0 172.18.1.205:3050 192.168.0.133:1104 ESTABELECIDA
tcp 0 0 172.18.1.205:3050 192.168.0.133:1107 ESTABELECIDA
tcp 0 0 172.18.1.205:3050 192.168.0.133:1103 ESTABELECIDA
tcp 0 0 172.18.1.205:3050 192.168.0.155:1116 ESTABELECIDA
tcp 0 0 172.18.1.205:3050 192.168.0.119:1204 ESTABELECIDA
tcp 0 0 172.18.1.205:3050 172.18.1.222:1750 ESTABELECIDA
tcp 0 0 172.18.1.205:3050 192.168.0.161:2101 ESTABELECIDA
tcp 0 0 172.18.1.205:3050 172.18.1.136:1699 ESTABELECIDA
tcp 0 0 172.18.1.205:3050 172.18.1.136:1214 ESTABELECIDA
tcp 0 0 172.18.1.205:3050 172.18.1.136:1209 ESTABELECIDA
tcp 0 0 172.18.1.205:3050 172.18.1.108:4948 ESTABELECIDA
