Secure Docker using USER and Volume

Issue

Docker user has root privilege on host. The default user in container is root. In order to secure docker, we can create a user in docker container and run as non privilege user. The problem is that some services in docker need to write data to disk. E.g. druple has a files folder to store user uploaded files.

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Docker restart policies.

Policies:

  • no - this is defualt value
  • no-failure - restart container if it returns an error exit code. It also supports maximum numbers of times Docker will try.
  • unless-stopped - only restart container if it is running after reboot or restart docker service
  • always - Always keep the container running
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Active Directory and Active Directory Domain services ports

Protocol and Port AD and AD DS Usage Type of traffic
TCP and UDP 389 Directory, Replication, User and Computer Authentication, Group Policy, Trusts LDAP
TCP 636 Directory, Replication, User and Computer Authentication, Group Policy, Trusts LDAP SSL
TCP 3268 Directory, Replication, User and Computer Authentication, Group Policy, Trusts LDAP GC
TCP 3269 Directory, Replication, User and Computer Authentication, Group Policy, Trusts LDAP GC SSL
TCP and UDP 88 User and Computer Authentication, Forest Level Trusts Kerberos
TCP and UDP 53 User and Computer Authentication, Name Resolution, Trusts DNS
TCP and UDP 445 Replication, User and Computer Authentication, Group Policy, Trusts SMB,CIFS,SMB2, DFSN, LSARPC, NbtSS, NetLogonR, SamR, SrvSvc
TCP 25 Replication SMTP
TCP 135 Replication RPC, EPM
TCP Dynamic Replication, User and Computer Authentication, Group Policy, Trusts RPC, DCOM, EPM, DRSUAPI, NetLogonR, SamR, FRS
TCP 5722 File Replication RPC, DFSR (SYSVOL)
UDP 123 Windows Time, Trusts Windows Time
TCP and UDP 464 Replication, User and Computer Authentication, Trusts Kerberos change/set password
UDP Dynamic Group Policy DCOM, RPC, EPM
UDP 138 DFS, Group Policy DFSN, NetLogon, NetBIOS Datagram Service
TCP 9389 AD DS Web Services SOAP
UDP 67 and UDP 2535 DHCP
noteNote
DHCP is not a core AD DS service but it is often present in many AD DS deployments.
DHCP, MADCAP
UDP 137 User and Computer Authentication, NetLogon, NetBIOS Name Resolution
TCP 139 User and Computer Authentication, Replication DFSN, NetBIOS Session Service, NetLogon
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