duplicate name errror

ksvy_ksvy — Mon, 11 Mar 2019 14:19:56 GMT

we have an ASA5505 running 8.03 setup with two interfaces inside/outside. There is a SQL server on the inside leg with a static NAT to the outside so it can communicate to the rest of the company's internal network. This setup has been working for a month or two, but recently they had to reboot the server for maintenance. When the server came back it reported a duplicate name error and went into offline mode. support at the site was finally able to get their server up by first shutting down the firewall and then bringing the sever up. The server comes online as normal then the firewall was turned on and everything appears to be working fine. However this appears to happen every time that you have to reboot the server.

Key firewall statements:

interface Vlan100

description *** plant Network ***

nameif inside

security-level 0

ip address x.x.0.1 255.255.0.0

interface Vlan200

description *** company internal Network ***

nameif outside

security-level 100

ip address x.x.x.8 255.255.255.128

interface Ethernet0/0

switchport access vlan 100

interface Ethernet0/1

switchport access vlan 200

static (inside,outside) x.x.x.14 x.x.x.50 netmask 255.255.255.255 dns

dhcpd auto_config inside

so when the asa's outside leg is the company's internal inter-network interface which provide's the inside leg (site network) inter-network interface DNS/WINS, could the problem be with DNS/WINS and not the ASA?

any suggestions would be helpful

thanks, Kevin

Re: duplicate name errror

Jon Marshall — Mon, 01 Dec 2008 21:26:10 GMT

Kevin

I haven't used the "dns" option at the end of the static statement before. But what occured was that if you need to reboot the ASA firewall before it works again it looks like the ASA is caching the record somehow.

Have you tried clearing the specific xlate for the SQL server rather than reloading the ASA firewall.

Jon

topic Re: duplicate name errror in Network Security

duplicate name errror

Re: duplicate name errror