ngga bisa update ppa karmic koala

kalo ada pesan seperti ini...
gpg: requesting key 247510BE from hkp server keyserver.ubuntu.com gpgkeys: HTTP fetch error 7: couldn't connect to host gpg: no valid OpenPGP data found. ...

itu berarti ada firewall yang belom dibuka, yaitu port 11371

lalu buka di router seperti ini..
iptables -I FORWARD -p tcp -m tcp --dport 11371 -j ACCEPT

hasilnya jadi seperti ini
root@didik-desktop:/home/didik# sudo add-apt-repository ppa:ubuntu-mozilla-daily/ppa
Executing: gpg --ignore-time-conflict --no-options --no-default-keyring --secret-keyring /etc/apt/secring.gpg --trustdb-name /etc/apt/trustdb.gpg --keyring /etc/apt/trusted.gpg --keyserver keyserver.ubuntu.com --recv B34505EA326FEAEA07E3618DEF4186FE247510BE
gpg: requesting key 247510BE from hkp server keyserver.ubuntu.com
gpg: key 247510BE: public key "Launchpad PPA for Ubuntu Mozilla Daily Build Team" imported
gpg: Total number processed: 1
gpg: imported: 1 (RSA: 1)



horeeeeeeeeeeee bisa....