Access priviledges

Unix/NFS group iepm 

File used to keep track of network group privs.
To see who is in a group use the command
netgroup <group_name>, e.g.
netgroup u-network-management
or
ypmatch <group_name> group
or
ypgroup exam -group iepm
Group 'iepm':
GID: 2087
Comment:
Last modified at Aug 2 15:20:42 2006 by jonl
Owners: cal
Members: akbar, cal, cottrell, cxg, fawad, hasan, iepm,
jerrodw, jiri, maheshkc, rich, ytl

#To add someone to a group use (Jerrod and Les can execute this command):
ypgroup adduser -group iepm -user pinger

# Please keep unix-admin & security notified when changes are needed, e.g. people changing function or moving etc.

#Note that people with privileges need to change their passwords at least every 9 months.

 Unix/AFS group iepm

To see the names of groups and privileges on a particular directory, issue the command:

fs la <directory>, e.g.

fs la .

or

fs la /afs/slac/g/scs/net/pinger

jerrodw@pinger $ fs la /afs/slac/g/scs/net/pinger/
Access list for /afs/slac/g/scs/net/pinger/ is
Normal rights:
  maint-pkg-netmon rlidwk
  g-scs rlidwka
  system:slac rl
  system:administrators rlidwka
  system:authuser rl
jerrodw@pinger $

To view members of a particular group listed from 'fs la', issue the command:

pts mem <group_name>, e.g.

jerrodw@pinger $ pts mem maint-pkg-netmon
Members of maint-pkg-netmon (id: -4786) are:
  <list of user_id's belonging to this group>
jerrodw@pinger $

To add users to a particular group (only if you have privileges of course), issue the command:

pts adduser -group <group_name> -user <user_id>

Network Test hosts

Please note that we would like to see network testing, especially WAN testing, done primarily and by convention from machines set aside for that purpose
(e.g. iepm-bw, iepm-resp, pinger), the list of network machines is kept at http://www-iepm.slac.stanford.edu/about/nodes.html

To find out who can logon to a specified host look at the /etc/passwd file on that host, look towards the end for things like
+@u-iepm
and use the netgroup u-iepm command to see who is in the group.
To find out what hosts u-iepm can logon to use:
#65cottrell@pinger:/afs/slac/g/scs/systems/system.info>grep u-iepm */passwd
#bping/passwd:+@u-iepm
#iepm-bw/passwd:+@u-iepm
#iepm-resp/passwd:+@u-iepm
#iepm-sol/passwd:+@u-iepm
#monalisa/passwd:+@u-iepm
#...

Sudo

The sudoers file can be found at:
/afs/slac/package/taylor/prod/base/sudoers
The following lines are in the sudoers file:
# NB: The following two aliases define collections of commands for use
# by members of the IEPM group on all machines and on the network
# trouble-shooting machine, pharlap, respectively. In this context,
# "IEPM group" is not necessarily the same as the NIS group named
# "iepm"; changes to the commands in the two aliases, or to the users
# who should be authorized to use the commands, still need the usual
# approvals.

# Commands authorized for members of the IEPM group on all machines:
Cmnd_Alias IEPM_ALL = NIKHEF_PING,PATHCHAR,PCHAR,PIPECHAR

# Commands authorized for members of the IEPM group on pharlap:
# The addition of PIPECHAR to this list of commands is granted for
# six months only and should be revisted May 28, 2002.
Cmnd_Alias IEPM_PHARLAP = SNOOP,TCPDUMP,NDD,PIPECHAR,KILL

The people in the sudoers file with privileges assigned by these two Cmnd_Alias-es are:
cal, cottrell, cxg.

iepm group: cottrell, warrenm, cal, dougc, cxg, grosso
Pathchar All sudo /afs/slac/g/scs/bin/pathchar
Pchar All sudo /afs/slac/package/netperf/bin/@sys/pchar
Pipechar All sudo /afs/slac.stanford.edu/package/netperf/bin/@sys/pipechar
NIKHEF ping All sudo /afs/slac/package/nikhef/@sys/ping
#Snoop and tcpdump are big security exposures, so please be careful with their use.
#Probably a good idea to notify security (email just before you start) if you are
#going to use snoop and/or tcpdump
Snoop Pharlap sudo snoop
Tcpdump Pharlap sudo /afs/slac/package/netperf/bin/@sys/tcpdump

u-network-management: warrenm, cottrell, kmartell, cal, cxg, grosso, janewei, gtb
ssh All

maint-pkg-nikhef: cxg, warrenm, dougc

The following have /usr/sbin/ndd -set privs and sudo kill (via
cmd macro IEPM_PHARLAP) on pharlap (7/19/01):

cal, cottrell, cxg

Account iepm has sudo kill with no password on pharlap (12/14/01)

cottrell also has ndd -set for evagore (11/21/01)

iepm has pipechar with no password on pharlap and antonia (11/28/01)