On Tue, 17 Nov 2009, Scheithauer, Lars (FH) wrote:
Hi,
Quick note:
Forgot to replace two values.
Jail - x.y.z.61
Host - x.y.z.60
Router - x.y.z.62
-----Ursprüngliche Nachricht-----
Von: owner-freebsd-j...@freebsd.org [mailto:owner-freebsd-j...@freebsd.org] Im
Auftrag von Scheithauer, Lars (FH)
Gesendet: Dienstag, 17. November 2009 10:19
An: freebsd-jail@freebsd.org
Betreff: Networking from jail
Hi everyone!
I'm having a little trouble with my jail's networking and I'm not sure
what to make of it.
My jailhost has an IP of x.y.z.48, my test jail is x.y.z.49. The
jailhost has both IP-adresses, the jail has just it's own:
Jail# ifconfig
bce0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu
1500
options=1bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,
TSO4>
ether xx:xx:xx:xx:xx:10
inet x.y.z.60 netmask 0xffffffc0 broadcast x.y.z.63
media: Ethernet autoselect (1000baseSX <full-duplex>)
status: active
[...]
Host# ifconfig
bce0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu
1500
options=1bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,
TSO4>
ether xx:xx:xx:xx:xx:10
inet x.y.z.61 netmask 0xffffffc0 broadcast x.y.z.63
inet x.y.z.60 netmask 0xffffffc0 broadcast x.y.z.63
media: Ethernet autoselect (1000baseSX <full-duplex>)
status: active
[...]
I am able to access the ssh-server running on the jail, and I am able to
access the proxyserver of our network via telnet and get some pages of
the internet. However, if I want to install something from the ports,
the jail is unable to fetch it:
Jail# cd /usr/ports/ftp/wget
Jail# make
===> Vulnerability check disabled, database not found
===> Found saved configuration for wget-1.11.4_1
=> wget-1.11.4.tar.bz2 doesn't seem to exist in /usr/ports/distfiles/.
=> Attempting to fetch from http://ftp.gnu.org/gnu/wget/.
fetch: http://ftp.gnu.org/gnu/wget/wget-1.11.4.tar.bz2: Operation timed
out
=> Attempting to fetch from ftp://ftp.gnu.org/gnu/wget/.
[...]
I've set the appropriate environment variables HTTP_PROXY, HTTPS_PROXY
and FTP_PROXY. If I test the connection with netcat, I get the following
error message:
# nc -zvw 1 -x 'proxy.example.com:8080' www.freebsd.org 80
nc: read failed (0/3): Broken pipe
The usual thing I am interested at that point is - does name
resolution work properly from within the jail? /etc/resolv.conf setup
correctly etc?
The funny thing is, that I have no problem installing ports from the
Host-system. From what I can tell, all the config files are correct:
Jail# cat /etc/rc.conf
sshd_enable="YES"
ifconfig_bce0="inet x.y.z.60 netmask 255.255.255.192"
defaultrouter="x.y.z.62"
hostname="jail.example.com"
That's not going to work, really (the ifconfig, defaultrouter, and
unless you changed the defaults on the host system not even the
hostname). You should actually remove those.
Host# cat /etc/rc.conf
sshd_enable="NO"
ifconfig_bce0="inet x.y.z.61 netmask 255.255.255.192"
defaultrouter="x.y.z.62"
hostname="host.example.com"
ipv6_enable="NO"
jail_enable="YES"
jail_set_hostname_allow="NO"
jail_list="jail"
jail_jail_hostname="jail"
jail_jail_ip="x.y.z.60"
jail_jail_rootdir="my/jail/root"
jail_jail_devfs_enable="YES"
That doesn't really match your ifconfig output from above; something
on the host system would have to set the IP address of the host. I
would expect something like (you may have mixed jail and host
addresses so properly sort this):
# host system IP address
ifconfig_bce0=inet x.y.z.61 netmask 255.255.255.192"
# jail IP address
ifconfig_bce0_alias0=inet x.y.z.60 netmask 255.255.255.255"
Note that the alias has a /32 netmask.
/bz
--
Bjoern A. Zeeb It will not break if you know what you are doing.
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