В качестве пользователя root введите команду apt-get update и получите эти сообщения об ошибках.
> Err http://security.debian.org lenny/updates Release.gpg
Could not resolve 'security.debian.org'
Err http://security.debian.org lenny/updates/main Translation-en_US
Could not resolve 'security.debian.org'
Err http://security.debian.org lenny/updates/contrib Translation-en_US
Could not resolve 'security.debian.org'
Err http://security.debian.org lenny/updates/non-free Translation-en_US
Could not resolve 'security.debian.org'
Err http://www.backports.org lenny-backports Release.gpg
Could not resolve 'www.backports.org'
Err http://www.backports.org lenny-backports/main Translation-en_US
Could not resolve 'www.backports.org'
Err http://www.backports.org lenny-backports/contrib Translation-en_US
Could not resolve 'www.backports.org'
Err http://www.backports.org lenny-backports/non-free Translation-en_US
Could not resolve 'www.backports.org'
Err http://ftp.us.debian.org lenny Release.gpg
Could not resolve 'ftp.us.debian.org'
Err http://ftp.us.debian.org lenny/main Translation-en_US
Could not resolve 'ftp.us.debian.org'
Err http://ftp.us.debian.org lenny/contrib Translation-en_US
Could not resolve 'ftp.us.debian.org'
Err http://ftp.us.debian.org lenny/non-free Translation-en_US
Could not resolve 'ftp.us.debian.org'
Err http://http.us.debian.org stable Release.gpg
Could not resolve 'http.us.debian.org'
Err http://http.us.debian.org stable/main Translation-en_US
Could not resolve 'http.us.debian.org'
Err http://http.us.debian.org stable/contrib Translation-en_US
Could not resolve 'http.us.debian.org'
Err http://http.us.debian.org stable/non-free Translation-en_US
Could not resolve 'http.us.debian.org'
Reading package lists... Done
W: Failed to fetch http://ftp.us.debian.org/debian/dists/lenny/Release.gpg Could not resolve 'ftp.us.debian.org'
W: Failed to fetch http://ftp.us.debian.org/debian/dists/lenny/main/i18n/Translation-en_US.gz Could not resolve 'ftp.us.debian.org'
W: Failed to fetch http://ftp.us.debian.org/debian/dists/lenny/contrib/i18n/Translation-en_US.gz Could not resolve 'ftp.us.debian.org'
W: Failed to fetch http://ftp.us.debian.org/debian/dists/lenny/non-free/i18n/Translation-en_US.gz Could not resolve 'ftp.us.debian.org'
W: Failed to fetch http://http.us.debian.org/debian/dists/stable/Release.gpg Could not resolve 'http.us.debian.org'
W: Failed to fetch http://http.us.debian.org/debian/dists/stable/main/i18n/Translation-en_US.gz Could not resolve 'http.us.debian.org'
W: Failed to fetch http://http.us.debian.org/debian/dists/stable/contrib/i18n/Translation-en_US.gz Could not resolve 'http.us.debian.org'
W: Failed to fetch http://http.us.debian.org/debian/dists/stable/non-free/i18n/Translation-en_US.gz Could not resolve 'http.us.debian.org'
W: Failed to fetch http://security.debian.org/dists/lenny/updates/Release.gpg Could not resolve 'security.debian.org'
W: Failed to fetch http://security.debian.org/dists/lenny/updates/main/i18n/Translation-en_US.gz Could not resolve 'security.debian.org'
W: Failed to fetch http://security.debian.org/dists/lenny/updates/contrib/i18n/Translation-en_US.gz Could not resolve 'security.debian.org'
W: Failed to fetch http://security.debian.org/dists/lenny/updates/non-free/i18n/Translation-en_US.gz Could not resolve 'security.debian.org'
W: Failed to fetch http://www.backports.org/debian/dists/lenny-backports/Release.gpg Could not resolve 'www.backports.org'
W: Failed to fetch http://www.backports.org/debian/dists/lenny-backports/main/i18n/Translation-en_US.gz Could not resolve 'www.backports.org'
W: Failed to fetch http://www.backports.org/debian/dists/lenny-backports/contrib/i18n/Translation-en_US.gz Could not resolve 'www.backports.org'
W: Failed to fetch http://www.backports.org/debian/dists/lenny-backports/non-free/i18n/Translation-en_US.gz Could not resolve 'www.backports.org'
W: Some index files failed to download, they have been ignored, or old ones used instead.
W: You may want to run apt-get update to correct these problems
Это на dreamplug Linux-сервере. Настроен так, чтобы моя сеть запускалась 192.168.1.2, а мой маршрутизатор перенаправлял порт ssh на сервер 192.168.1.6.