Hi Jiri! We have a similar problem that you described with UDP bind through a Cisco PIX501 firewall. We are using port 5080 and the replies Resource temporarily unavailable. Did you ever get an answer to your problem? I really appreciate if you can answer me soon!
regards Anders
Anders Wikström Si ATM AB Hamngatan 27 172 66 Sundbyberg +46 (0)8 982300 Mobile +46 (0)70 5682281