Having difficulty with a clock on one of our sites, connecting to head office over VPN. The clock software on the HQ Server is sending the initial packet to the Branch clock (Packet 1), which reaches the clock. The clock, which has an MTU of 1500, then sends a response (Packets 2 and 3). These packets reach our firewall but are dropped. The router shows nothing in the logs relating to this packet. I've switched off the firewall, created firewall rules to specifically allow all traffic for this IP address. But nothing I do get the packet back to the HQ Server.
No Time Source Destination IPID Proto Frame Len Info 1 0.0000 192.168.1.1 192.168.16.55 0x64a5 UDP 48 2 62227 --> 6767 Len =2 2 0.0622 192.168.16.55 192.168.1.1 0xa2cf UDP 1518 1472 6767 --> 62227 Len = 2204 3 0.0622 192.168.16.55 192.168.1.1 0xa2cf IPv4 770 7 32 Fragmented IP Protocol (proto=UDP 17, off=1480, ID=a2cf)
Sorry about the text of the packets but it wouldn't let me include a picture cos I don't have enough pints.
