Title: Re: Issues setting up a 2nd Private DNS server
Daniel J Walsh wrote:
Daniel B. Thurman wrote:
>
> I am trying to setup a 2nd private DNS server in my private
> network, behind the firewall (with DNS access enabled) and
> I am able to resolve all of my local systems. However, I have
> some problems. One involves SELinux and the other involved
> forwarding as shown below:
>
> 1) SELinux errors are reported only when
starting/stopping/restarting
> named.
> ++++++++++++++++++++++++++++++++++++++++++++++
>[snipped!]
> host=gold.cdkkt.com type=AVC
msg=audit(1212426103.808:4122): avc:
> denied { read write } for pid=7037 comm="named"
path="socket:[874313]"
> dev=sockfs ino=874313 scontext=system_u:system_r:named_t:s0
> tcontext=system_u:system_r:unconfined_t:s0
tclass=unix_stream_socket
>
> host=gold.cdkkt.com type=SYSCALL msg=audit(1212426103.808:4122):
> arch=40000003 syscall=11 success=yes exit=0 a0=9b05a68 a1=9b05e38
> a2=9b04fe0 a3=0 items=0 ppid=7036 pid=7037 auid=500 uid=0 gid=0
euid=0
> suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) comm="named"
> exe="/usr/sbin/named" subj=system_u:system_r:named_t:s0 key=(null)
> ++++++++++++++++++++++++++++++++++++++++++++++
> [snipped!]
> host=gold.cdkkt.com type=AVC msg=audit(1212426103.905:4123): avc:
> denied { read write } for pid=7064 comm="rndc"
path="socket:[874313]"
> dev=sockfs ino=874313 scontext=system_u:system_r:ndc_t:s0
> tcontext=system_u:system_r:unconfined_t:s0
tclass=unix_stream_socket
>
> host=gold.cdkkt.com type=SYSCALL msg=audit(1212426103.905:4123):
> arch=40000003 syscall=11 success=yes exit=0 a0=90000d0 a1=9000078
> a2=8fe12e0 a3=0 items=0 ppid=7055 pid=7064 auid=500 uid=0 gid=0
euid=0
> suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) comm="rndc"
> exe="/usr/sbin/rndc" subj=system_u:system_r:ndc_t:s0 key=(null)
> ++++++++++++++++++++++++++++++++++++++++++++++
> [snipped!]
> host=gold.cdkkt.com type=AVC msg=audit(1212426103.790:4120): avc:
> denied { read write } for pid=7034 comm="mount"
path="socket:[874313]"
> dev=sockfs ino=874313 scontext=system_u:system_r:mount_t:s0
> tcontext=system_u:system_r:unconfined_t:s0
tclass=unix_stream_socket
>
> host=gold.cdkkt.com type=SYSCALL msg=audit(1212426103.790:4120):
> arch=40000003 syscall=11 success=yes exit=0 a0=870e610 a1=86e8fa8
> a2=86eb2e0 a3=0 items=0 ppid=7014 pid=7034 auid=500 uid=0 gid=0
euid=0
> suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) comm="mount"
> exe="/bin/mount" subj=system_u:system_r:mount_t:s0 key=(null)
> ++++++++++++++++++++++++++++++++++++++++++++++
>
> 2) Forwarders do not work:
> ++++++++++++++++++++++++++++++++++++++++++++++
> ** server can't find msn.com: NXDOMAIN
> ++++++++++++++++++++++++++++++++++++++++++++++
>
> Please advise,
> Dan
>
This looks like either a leaked file descriptor, which can be
ingored/dontaudited
Or it could be a redirection of the terminal to a unix_stream_socket.
Huh? I am not sure what you are saying nor am I sure
what to in fixing these selinux avc errors.
As for DNS forwarding, selinux does not seem to have
anything to do with preventing forwarding AFAIK, I
tested by setting 'setenforce 0', then using nslookup
on 'msn.com.' - it still fails.
I wonder how to debug the named to see why forwarding
fails... can anyone help?
Thanks-
Dan
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