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Firewall model: Juniper Netscreen-25 (NS-025B-003)
The firewall has already worked for serveral years. Recently, I can't access the web interface and telnet.
If the issue resolves after a reboot, I would venture to guess that the firewall is running out of sockets...
There were issues in earlier versions of ScreenOS...
sometimes manually clearing the sockets worked, sometimes it didn't.
http://kb.juniper.net/InfoCenter/index?page=content&id=KB21096 might be of help.
Many thanks samc and rcojunos. I reboot the system can solve the problem.
First i connect with rj-45 serial port login the system.
Next backup the configuration and software image with following command:
Have you tried reconfigure the services (telnet+web)? A reboot should be enough unless something on the config is blocking the access.