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Full Discussion: Accept SNMP Packets...
Special Forums UNIX and Linux Applications Infrastructure Monitoring Accept SNMP Packets... Post 302471552 by karlochacon on Saturday 13th of November 2010 05:45:33 PM
Old 11-13-2010
hi again

by the way I have to configure this SNMP stuff on a firewall that is part of a SNMP project
so they want to allow only some hosts to send SNMP packets a across this Linux firewall

Since I still don't get how to do it on SNMP like in Windows

I was thinking using hosts.allow and deny like this

Code:
hosts.allow
snmpd : 192.168.2.1 192.168.2.2 192.168.2.3 


hosts.deny
snmpd : ALL

but I read this
# Never configure TCP Wrappers on firewall host.
# Put TCP Wrappers behind a firewall systems as TCP Wrappers is no substitute for netfilter or pf firewall.

on
Explain Linux / UNIX TCP Wrappers / Find Out If Program Compiled With TCP Wrappers


so any guidance on SNMP way?
thanks a lot
 

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unbound-streamtcp(1)						      unbound						      unbound-streamtcp(1)

NAME
unbound-streamtcp - unbound DNS lookup utility SYNOPSIS
unbound-streamtcp [-unsh] [-f ipaddr[@port]] name type class DESCRIPTION
unbound-streamtcp sends a DNS Query of the given type and class for the given name to the DNS server over TCP and displays the response. If the server to query is not given using the -f option then localhost (127.0.0.1) is used. More queries can be given on one commandline, they are resolved in sequence. The available options are: name This name is resolved (looked up in the DNS). type Specify the type of data to lookup. class Specify the class to lookup for. -u Use UDP instead of TCP. No retries are attempted. -n Do not wait for the answer. -s Use SSL. -h Print program usage. -f ipaddr[@port] Specify the server to send the queries to. If not specified localhost (127.0.0.1) is used. EXAMPLES
Some examples of use. $ unbound-streamtcp www.example.com A IN $ unbound-streamtcp -f 192.168.1.1 www.example.com SOA IN $ unbound-streamtcp -f 192.168.1.1@1234 153.1.168.192.in-addr.arpa. PTR IN EXIT CODE
The unbound-streamtcp program exits with status code 1 on error, 0 on no error. AUTHOR
This manual page was written by Tomas Hozza <thozza@redhat.com>. NLnet Labs Mar 21, 2013 unbound-streamtcp(1)
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