Could not reverse map address...

hi, i'm using 2 ethernet on my gateway server(linux). eth0 used for dhcp from my isp.
eth1 used for my local network. on my local network i used dhcp for our local client.
i'm running djbdns, dhcp-server, squid(port 80 redirect to port 3128) and ssh at server.
when i connect to my server(eth1) using ssh, i got this messages (/var/log/messages):

Could not reverse map address 192.168.1.49.
Accepted password for tommy from 192.168.1.49 port 2079

this is my routing table at gateway :
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
10.6.20.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 lo
0.0.0.0 10.6.20.1 0.0.0.0 UG 0 0 0 eth0

i've got another server on my local network(linux) running mail server(qmail) & apache.
can anybody tell me what the messages mean??? is there security hole???

btw it seems normal when i connect through ssh to my gateway server.

It says that there is no reverse DNS entry that maps 192.168.1.49 to a host/domainname. Do you have a DNS server setup? (a local one knowing about your 192.168.1 zone)


not really. at least no important one. Misconfiguration without further harm.


Then you are connecting to a machine with an official IP, the official DNS servers out on the internet can do the reverse mapping here. (right? are you using an official IP on that one?)