So far the service has been great with NowNZ, had my SNR rates optimised on the exchange end which improved sync rates by nearly 4mb.

I'm having a rather weird issue where people can't ping me externally and no one can join games which require ports to be opened (if im hosting).

This didn't happen on Telecom and only started after switching to NowNZ about 2 weeks ago.

The only thing i can think of is they have a limited number of IP's so they are using NAT so they don't have to issue unique ips?

I can't exactly call the helpdesk tomorrow as its closed and this is really starting to get on my nerve.

No equipment or pc changes have occurred since it was previously working with Telecom.

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Have set my PC as DMZ and opened ports but no one can connect. People can't even ping my IP.

PING 202.56.35.39 (202.56.35.39): 56 data bytes
Request timeout for icmp_seq 0
Request timeout for icmp_seq 1
Request timeout for icmp_seq 2
Request timeout for icmp_seq 3
Request timeout for icmp_seq 4
Request timeout for icmp_seq 5
Request timeout for icmp_seq 6
Request timeout for icmp_seq 7
Request timeout for icmp_seq 8
Request timeout for icmp_seq 9
Request timeout for icmp_seq 10
Request timeout for icmp_seq 11
Request timeout for icmp_seq 12
Request timeout for icmp_seq 13
Request timeout for icmp_seq 14
Request timeout for icmp_seq 15
Request timeout for icmp_seq 16
Request timeout for icmp_seq 17
Request timeout for icmp_seq 18

--- 202.56.35.39 ping statistics ---
20 packets transmitted, 0 packets received, 100.0% packet loss