Special Forums Windows & DOS: Issues & Discussions Home Questions Tags Users Unanswered Windows 2016 DNS server returns SERVFAIL for non-existing doma Post 303043611 by broy32000 on Sunday 2nd of February 2020 04:53:32 AM
Home Questions Tags Users Unanswered Windows 2016 DNS server returns SERVFAIL for non-existing doma

I have two DNS resolvers in /etc/resolv.conf file. The top one is Windows DNS server, and the bottom one is my wi-fi router. Please see below. nameserver 192.168.1.126 nameserver 192.168.1.1

In Windows DNS server, the sole "Forward Lookup Zone" is biman.net

When I query for host in the zone (biman.net) the Windows DNS server works fine-- either it returns the IP or NXDOMAIN. But when I query for anything for non-existing zone it returns SERVFAIL. But the wifi router returns NXDOMAIN even when zone name is bogus.

How can I get NXDOMAIN response from Windows DNS server when zone does not exist?

Below are the queries and the responses.
Code:
root@VDIkali:~# nslookup -q=A kali2.biman.net Server: 192.168.1.126 Address: 192.168.1.126#53

Name: kali2.biman.net Address: 192.168.1.122

root@VDIkali:~# nslookup -q=A NOHOST.biman.net Server: 192.168.1.126 Address: 192.168.1.126#53

** server can't find NOHOST.biman.net: NXDOMAIN

root@VDIkali:~# nslookup -q=A kali2.NONEXTING.net ;; Got SERVFAIL reply from 192.168.1.126, trying next server Server: 192.168.1.1 Address: 192.168.1.1#53

** server can't find kali2.NONEXTING.net: NXDOMAIN


Last edited by vbe; 02-02-2020 at 06:21 AM.. Reason: code tags
 
Test Your Knowledge in Computers #493
Difficulty: Medium
When a program executes, each command executes one after the other, top-to-bottom. This is known as inconsequential control flow.
True or False?

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SHOREWALL-EXCLUSION(5)						  [FIXME: manual]					    SHOREWALL-EXCLUSION(5)

NAME
exclusion - Exclude a set of hosts from a definition in a shorewall configuration file. SYNOPSIS
!address-or-range[,address-or-range]... !zone-name[,zone-name]... DESCRIPTION
The first form of exclusion is used when you wish to exclude one or more addresses from a definition. An exclaimation point is followed by a comma-separated list of addresses. The addresses may be single host addresses (e.g., 192.168.1.4) or they may be network addresses in CIDR format (e.g., 192.168.1.0/24). If your kernel and iptables include iprange support, you may also specify ranges of ip addresses of the form lowaddress-highaddress No embedded whitespace is allowed. Exclusion can appear after a list of addresses and/or address ranges. In that case, the final list of address is formed by taking the first list and then removing the addresses defined in the exclusion. Beginning in Shorewall 4.4.13, the second form of exclusion is allowed after all and any in the SOURCE and DEST columns of /etc/shorewall/rules. It allows you to omit arbitrary zones from the list generated by those key words. Warning If you omit a sub-zone and there is an explicit or explicit CONTINUE policy, a connection to/from that zone can still be matched by the rule generated for a parent zone. For example: /etc/shorewall/zones: #ZONE TYPE z1 ip z2:z1 ip ... /etc/shorewall/policy: #SOURCE DEST POLICY z1 net CONTINUE z2 net REJECT /etc/shorewall/rules: #ACTION SOURCE DEST PROTO DEST # PORT(S) ACCEPT all!z2 net tcp 22 In this case, SSH connections from z2 to net will be accepted by the generated z1 to net ACCEPT rule. In most contexts, ipset names can be used as an address-or-range. Beginning with Shorewall 4.4.14, ipset lists enclosed in +[...] may also be included (see shorewall-ipsets[1] (5)). The semantics of these lists when used in an exclusion are as follows: o !+[set1,set2,...setN] produces a packet match if the packet does not match at least one of the sets. In other words, it is like NOT match set1 OR NOT match set2 ... OR NOT match setN. o +[!set1,!set2,...!setN] produces a packet match if the packet does not match any of the sets. In other words, it is like NOT match set1 AND NOT match set2 ... AND NOT match setN. EXAMPLES
Example 1 - All IPv4 addresses except 192.168.3.4 !192.168.3.4 Example 2 - All IPv4 addresses except the network 192.168.1.0/24 and the host 10.2.3.4 !192.168.1.0/24,10.1.3.4 Example 3 - All IPv4 addresses except the range 192.168.1.3-192.168.1.12 and the network 10.0.0.0/8 !192.168.1.3-192.168.1.12,10.0.0.0/8 Example 4 - The network 192.168.1.0/24 except hosts 192.168.1.3 and 192.168.1.9 192.168.1.0/24!192.168.1.3,192.168.1.9 Example 5 - All parent zones except loc any!loc FILES
/etc/shorewall/hosts /etc/shorewall/masq /etc/shorewall/rules /etc/shorewall/tcrules SEE ALSO
shorewall(8), shorewall-accounting(5), shorewall-actions(5), shorewall-blacklist(5), shorewall-hosts(5), shorewall_interfaces(5), shorewall-ipsets(5), shorewall-maclist(5), shorewall-masq(5), shorewall-nat(5), shorewall-netmap(5), shorewall-params(5), shorewall-policy(5), shorewall-providers(5), shorewall-proxyarp(5), shorewall-rtrules(5), shorewall-routestopped(5), shorewall-rules(5), shorewall.conf(5), shorewall-secmarks(5), shorewall-tcclasses(5), shorewall-tcdevices(5), shorewall-tcrules(5), shorewall-tos(5), shorewall-tunnels(5), shorewall-zones(5) NOTES
1. shorewall-ipsets http://www.shorewall.net/manpages/shorewall-ipsets.html [FIXME: source] 06/28/2012 SHOREWALL-EXCLUSION(5)

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