Re: Multihomed Configuration



On Wed, 2007-06-06 at 22:32 +0530, Nirmal Babu Puliyadi Suriya Kumar -X
(npuliyad - HCL at Cisco) wrote:
Hi Folks,

I am using version openssh-4.6p1 in solaris server.

Consider my solaris PC is configured as multihomed with two NIC.

e69001% ifconfig -a
ce0: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
inet 172.23.87.109 netmask ffffff00 broadcast 172.23.87.255
ce1: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 3
inet 192.168.2.133 netmask ffffff00 broadcast 192.168.2.255

I mean my PC has two IP address. By making use of ListenAddress in
sshd_config file, i can able to listen ssh/ sftp request from both IP
addresses.

e69001# grep "ListenAddress" sshd_config
#ListenAddress 0.0.0.0
#ListenAddress ::
ListenAddress 172.23.87.109
ListenAddress 192.168.2.133

If we do sftp to both the IP address from different machine, it will
pointout the same default root directory.

From machine1:

tballraker7# ./sftp svplus@xxxxxxxxxxxxx
Connecting to 192.168.2.133...
svplus@xxxxxxxxxxxxx's password:
sftp> pwd
Remote working directory: /usr/users/svplus
sftp > quit

From machine2:

cwmsent51# ./sftp svplus@xxxxxxxxxxxxx
Connecting to 172.23.87.109...
svplus@xxxxxxxxxxxxx's password:
sftp> pwd
Remote working directory: /usr/users/svplus
sftp > quit


Here, the default directory will be defined based on the login username.


But, Is it possible to assign/ configure different default directory for
each IP address with same login username?

Rgds
Nirmal

It's a shame to have to hard-configure both IP addresses in this config
file -- especially if you are getting them dynamically through DHCP. I
wonder if there is a different way to enable sshd on both NICs without
specifying the IP address...