Hello , We have configured splitDNS .Bind version is 9.9.2.We are able to lookup and browse to particular URL( e.g.https://registry.npmjs.org <https://registry.npmjs.org/> ) from internal network but the same URL when we tried from external network ,it failed to browse ,but able to do nslookup.We checked tcpdump logs and observed that DNS protocol switched from udp to tcp.
Tcpdump logs for reference 17:39:28.380918 ARP, Request who-has 196.1.113.242 tell 196.1.113.248, length 28 17:39:28.381205 ARP, Reply 196.1.113.242 is-at 00:09:0f:09:00:1a, length 46 17:39:30.395995 IP 196.1.113.242.54930 > 196.1.113.248.domain: Flags [S], seq 2177054283, win 14600, options [mss 1460,sackOK,TS val 2512104 ecr 0,nop,wscale 7], length 0 17:39:38.420575 IP 196.1.113.242.54930 > 196.1.113.248.domain: Flags [S], seq 2177054283, win 14600, options [mss 1460,sackOK,TS val 2520128 ecr 0,nop,wscale 7], length 0 17:39:54.451991 IP 196.1.113.242.54930 > 196.1.113.248.domain: Flags [S], seq 2177054283, win 14600, options [mss 1460,sackOK,TS val 2536160 ecr 0,nop,wscale 7], length 0 17:40:26.483591 IP 196.1.113.242.54930 > 196.1.113.248.domain: Flags [S], seq 2177054283, win 14600, options [mss 1460,sackOK,TS val 2568192 ecr 0,nop,wscale 7], length 0 Kindly help to resolve the same. Regards, Purva Rawan ------------------------------------------------------------------------------------------------------------ [ C-DAC is on Social-Media too. Kindly follow us at: Facebook: https://www.facebook.com/CDACINDIA & Twitter: @cdacindia ] This e-mail is for the sole use of the intended recipient(s) and may contain confidential and privileged information. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies and the original message. Any unauthorized review, use, disclosure, dissemination, forwarding, printing or copying of this email is strictly prohibited and appropriate legal action will be taken. ------------------------------------------------------------------------------------------------------------
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