Unusual Putty Access

[Hitenk]

Hi guys,

This is my first post. I have recently started a new job in which we have 3 linux servers ( 2 intranet servers, and 1 DHCP server)

Im a total newbie to Linux so please bare with me.

We use Putty to access these servers from our windows XP stations. And I can access all 3 servers with no problem. My other two work colleagues can access the 2 Intranet servers fine using putty but get connection refused when trying to access the DHCP server.

Is there any settings that would refuse connection from thier workstations

any help / advice would be great

Thanks in Advance

Hiten

[bigtomrodney]

When you say DHCP server I assume it is offering the DHCP service as opposed to being on a dhcp lease itself.

Can they ping the server? Can they access it by IP address? Do they have any entries for the server in their hosts file that might be conflicting with their attempts at name resolution.

[Hitenk]

Thanks for the reply

yes it is acting as a DHCP service as in it is dishing out address to network hosts.

I have checked the stations and they can ping the linux server fine.

and they get refused when using either IP address or Host name to access the server.

Also their host files have nothing in them relating to the linux server.

is there any file on the linux server that refuses access to certain ip addresses?

Thanks

[bigtomrodney]

Yep there sure is. Have a look at /etc/hosts.allow and /etc/hosts.deny. It may be that only your PC is in the allow list.

[Hitenk]

Hi

I have had a look at the 2 files. hosts.allow does not have any hosts mentioned

but the host.deny files has the following entry

ALL: PARANOID

could this be the reason.

if i edit this does anything need to be restarted or are the settings accepted on the fly

thanks

[Hitenk]

anyone with anymore ideas?

[gogalthorp]

Hi

I have had a look at the 2 files. hosts.allow does not have any hosts mentioned

but the host.deny files has the following entry

ALL: PARANOID

could this be the reason.

if i edit this does anything need to be restarted or are the settings accepted on the fly

thanks

Generally you need to stop and then restart the service. Of course a reboot would do that too.