2x Ver 2 running V2.420.AC00.18.R, Build Date: 2020-10-30
1x Ver 3 running V2.800.0000000.15.R, Build Date: 2021-07-16
All three cameras exhibit the same problem. I am guessing this affects other models as well.
After logging into a camera I go to SETUP/SYSTEM/UPGRADE
On this tab you find four buttons: 'Browse' - 'Upgrade' - 'Download the latest firm...' - 'Check Version'
The first three buttons work as expected, but the check version does nothing.
After a bit of troubleshooting I discovered when you click the button a DNS request is generated for dh.amcrestsecurity.com
This request ends in "DNS 82 Standard query response 0xf100 Server failure A dh.amcrestsecurity.com"
I have included some captured camera traffic below.
That errors means the domain nameserver for amcrestsecurity.com domain is offline or not functioning correctly.
(Could also mean that dh.amcrestsecurity.com is not configured as a DNS server.)
If the domain did not exist you would receive NXDOMAIN or non-existent domain as an error message.
I was not able to find a valid IP address using the following DNS servers:
GooglePublic DNS, Cloudflare, Quad9, Cisco Umbrella(formerly OpenDNS), Comcast, Verizon, Level3, and DNSCHECKER
Does anyone have the correct IP address that dh.amcrestsecurity.com should point to? I'll manually add an entry to my local DNS server.
Thank you.
------------------------------------------------------
Captured traffic from IP2M-841W-V3:
Code: Select all
146 49.607215240 10.10.10.81 → 3.238.152.164 TLSv1.2 429 Application Data
147 49.734720800 3.238.152.164 → 10.10.10.81 TCP 66 443 → 41422 [ACK] Seq=2397 Ack=2108 Win=35712 Len=0 TSval=3696591215 TSecr=4294940884
148 49.739968840 10.10.10.81 → 3.238.152.164 TLSv1.2 542 Application Data, Application Data
149 49.827644440 3.238.152.164 → 10.10.10.81 TCP 66 443 → 41422 [ACK] Seq=2397 Ack=2584 Win=38272 Len=0 TSval=3696591238 TSecr=4294940897
150 53.132033080 10.10.10.81 → 10.10.10.1 DNS 82 Standard query 0x2826 A dh.amcrestsecurity.com
151 53.158274160 10.10.10.1 → 10.10.10.81 DNS 82 Standard query response 0x2826 Server failure A dh.amcrestsecurity.com
152 54.214488480 10.10.10.81 → 3.238.152.164 TLSv1.2 125 Application Data
153 54.302178440 3.238.152.164 → 10.10.10.81 TCP 66 443 → 41422 [ACK] Seq=2397 Ack=2643 Win=38272 Len=0 TSval=3696592356 TSecr=4294941345
154 54.302286160 3.238.152.164 → 10.10.10.81 TLSv1.2 122 Application Data
155 54.302675760 10.10.10.81 → 3.238.152.164 TCP 66 41422 → 443 [ACK] Seq=2643 Ack=2453 Win=37888 Len=0 TSval=4294941354 TSecr=3696592356
156 56.641903080 10.10.10.81 → 10.10.10.1 DNS 82 Standard query 0xf100 A dh.amcrestsecurity.com
157 56.666018480 10.10.10.1 → 10.10.10.81 DNS 82 Standard query response 0xf100 Server failure A dh.amcrestsecurity.com
158 58.193906840 10.10.10.81 → 10.10.10.1 DNS 82 Standard query 0x2826 A dh.amcrestsecurity.com
159 58.218128400 10.10.10.1 → 10.10.10.81 DNS 82 Standard query response 0x2826 Server failure A dh.amcrestsecurity.com
160 60.162052160 10.10.10.81 → 10.10.10.1 DNS 82 Standard query 0x0dc9 A dh.amcrestsecurity.com
161 60.187576320 10.10.10.1 → 10.10.10.81 DNS 82 Standard query response 0x0dc9 Server failure A dh.amcrestsecurity.com
162 60.985489760 AmcrestT_24:e4:c3 → Broadcast ARP 60 ARP Announcement for 10.10.10.81
163 61.701301920 10.10.10.81 → 10.10.10.1 DNS 82 Standard query 0xf100 A dh.amcrestsecurity.com
164 61.725635560 10.10.10.1 → 10.10.10.81 DNS 82 Standard query response 0xf100 Server failure A dh.amcrestsecurity.com
165 61.956624320 10.10.10.81 → 239.255.255.251 UDP 873 37810 → 37810 Len=831
166 61.957315200 10.10.10.81 → 239.255.255.251 UDP 873 37810 → 37810 Len=831
167 61.958073720 10.10.10.81 → 239.255.255.251 UDP 873 37810 → 37810 Len=831
168 61.971428000 10.10.10.81 → 255.255.255.255 UDP 441 5050 → 5050 Len=399
169 61.972325080 10.10.10.81 → 255.255.255.255 UDP 441 5050 → 5050 Len=399
170 61.973210320 10.10.10.81 → 255.255.255.255 UDP 441 5050 → 5050 Len=399
171 61.981034200 10.10.10.81 → 224.0.0.22 IGMPv3 60 Membership Report / Join group 239.255.255.251 for any sources
172 62.200922240 10.10.10.81 → 224.0.0.22 IGMPv3 60 Membership Report / Join group 239.255.255.251 for any sources
173 63.670703080 10.10.10.81 → 239.255.255.250 UDP 1313 41315 → 3702 Len=1271
174 63.672131880 10.10.10.81 → 8.8.8.8 DNS 82 Standard query 0x8932 A dh.amcrestsecurity.com
175 63.696270200 8.8.8.8 → 10.10.10.81 DNS 82 Standard query response 0x8932 Server failure A dh.amcrestsecurity.com
176 63.704512920 10.10.10.81 → 8.8.4.4 DNS 82 Standard query 0x8932 A dh.amcrestsecurity.com
177 63.728760120 8.8.4.4 → 10.10.10.81 DNS 82 Standard query response 0x8932 Server failure A dh.amcrestsecurity.com
178 65.221700600 10.10.10.81 → 8.8.8.8 DNS 82 Standard query 0x0dc9 A dh.amcrestsecurity.com
179 65.233830480 8.8.8.8 → 10.10.10.81 DNS 82 Standard query response 0x0dc9 Server failure A dh.amcrestsecurity.com
180 65.239552920 10.10.10.81 → 8.8.4.4 DNS 82 Standard query 0x0dc9 A dh.amcrestsecurity.com
181 65.263679280 8.8.4.4 → 10.10.10.81 DNS 82 Standard query response 0x0dc9 Server failure A dh.amcrestsecurity.com
182 67.192495080 10.10.10.81 → 8.8.8.8 DNS 82 Standard query 0x9bc7 A dh.amcrestsecurity.com
183 67.218138440 8.8.8.8 → 10.10.10.81 DNS 82 Standard query response 0x9bc7 Server failure A dh.amcrestsecurity.com
184 67.223882960 10.10.10.81 → 8.8.4.4 DNS 82 Standard query 0x9bc7 A dh.amcrestsecurity.com
185 67.248428960 8.8.4.4 → 10.10.10.81 DNS 82 Standard query response 0x9bc7 Server failure A dh.amcrestsecurity.com
186 68.761600960 10.10.10.81 → 8.8.8.8 DNS 82 Standard query 0x8932 A dh.amcrestsecurity.com
187 68.785884560 8.8.8.8 → 10.10.10.81 DNS 82 Standard query response 0x8932 Server failure A dh.amcrestsecurity.com
188 68.792503600 10.10.10.81 → 8.8.4.4 DNS 82 Standard query 0x8932 A dh.amcrestsecurity.com
189 68.816896480 8.8.4.4 → 10.10.10.81 DNS 82 Standard query response 0x8932 Server failure A dh.amcrestsecurity.com
190 70.711675640 10.10.10.81 → 8.8.8.8 DNS 82 Standard query 0x6259 A dh.amcrestsecurity.com
191 70.735639120 8.8.8.8 → 10.10.10.81 DNS 82 Standard query response 0x6259 Server failure A dh.amcrestsecurity.com
192 70.742104560 10.10.10.81 → 8.8.4.4 DNS 82 Standard query 0x6259 A dh.amcrestsecurity.com
193 70.766344280 8.8.4.4 → 10.10.10.81 DNS 82 Standard query response 0x6259 Server failure A dh.amcrestsecurity.com
194 72.281505600 10.10.10.81 → 8.8.8.8 DNS 82 Standard query 0x9bc7 A dh.amcrestsecurity.com
195 72.305773520 8.8.8.8 → 10.10.10.81 DNS 82 Standard query response 0x9bc7 Server failure A dh.amcrestsecurity.com
196 72.312839320 10.10.10.81 → 8.8.4.4 DNS 82 Standard query 0x9bc7 A dh.amcrestsecurity.com
197 72.337021320 8.8.4.4 → 10.10.10.81 DNS 82 Standard query response 0x9bc7 Server failure A dh.amcrestsecurity.com
198 75.817137840 10.10.10.81 → 8.8.8.8 DNS 82 Standard query 0x6259 A dh.amcrestsecurity.com
199 75.842932160 8.8.8.8 → 10.10.10.81 DNS 82 Standard query response 0x6259 Server failure A dh.amcrestsecurity.com
200 75.848619040 10.10.10.81 → 8.8.4.4 DNS 82 Standard query 0x6259 A dh.amcrestsecurity.com
201 75.873121520 8.8.4.4 → 10.10.10.81 DNS 82 Standard query response 0x6259 Server failure A dh.amcrestsecurity.com
202 83.699429360 AmcrestT_24:e4:c3 → Broadcast ARP 60 Gratuitous ARP for 10.10.10.81 (Reply)
203 84.212074360 10.10.10.81 → 3.238.152.164 TLSv1.2 125 Application Data
204 84.299847440 3.238.152.164 → 10.10.10.81 TLSv1.2 122 Application Data