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Thread: Port Forwarding failing only to Ubuntu servers from Draytek router

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we have draytek 2820n router connected internet, , number of servers inside network exposed different degrees internet.

windows servers working fine port forwarding, allowing access exchange server perfectly.

have asterisk pbx based on centos (on vmware esxi) on dmz, locked down well. these great.

have number of minimal ubuntu servers, 10.04.2 lts, on vmware esxi. when set these ubuntu servers either port forwarding or on dmz, work while, after random period of time, anywhere 4 hours 20 hours, unable access servers internet.

of servers (windows, centos , ubuntu) have been set static ip addresses, , of servers can accessed @ times within network.

connecting router monitor interfaces appears show sending out data normal, , wireshark on ubuntu servers shows big pile of nothing.

if has suggestions i'm missing, i'd appreciate it.

simon

you not alone, same problem here. nmap shows ports closed after while, no matter if dmz or port redirection. i'm in contact draytek support hint happens ubuntu might resolve this. thanks.

rufinus


Forum The Ubuntu Forum Community Ubuntu Official Flavours Support Networking & Wireless [ubuntu] Port Forwarding failing only to Ubuntu servers from Draytek router


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