firebird2.5 - порт 3050 закрыт для внешки.

root@localhost:/home/user# nmap -p3050 192.168.60.48

Starting Nmap 6.47 ( http://nmap.org ) at 2016-11-15 10:37 MSK
mass_dns: warning: Unable to determine any DNS servers. Reverse DNS is disabled. Try using --system-dns or specify valid servers with --dns-servers
Nmap scan report for 192.168.60.48
Host is up (0.000068s latency).
PORT     STATE  SERVICE
3050/tcp closed gds_db

Nmap done: 1 IP address (1 host up) scanned in 1.15 seconds
root@localhost:/home/user# nmap -p3050 127.0.0.1

Starting Nmap 6.47 ( http://nmap.org ) at 2016-11-15 10:38 MSK
mass_dns: warning: Unable to determine any DNS servers. Reverse DNS is disabled. Try using --system-dns or specify valid servers with --dns-servers
Nmap scan report for localhost (127.0.0.1)
Host is up (0.000051s latency).
PORT     STATE SERVICE
3050/tcp open  gds_db

Nmap done: 1 IP address (1 host up) scanned in 1.17 seconds
root@localhost:/home/user# ifconfig 
eth0      Link encap:Ethernet  HWaddr 78:41:43:d3:44:23  
          inet addr:192.168.60.48  Bcast:192.168.60.255  Mask:255.255.255.0
          inet6 addr: fe80::ca60:ff:fee0:8711/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:17654 errors:0 dropped:1 overruns:0 frame:0
          TX packets:6302 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:1972413 (1.8 MiB)  TX bytes:4499134 (4.2 MiB)