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23

You need to be able to log in on another host on the same network segment. Some of the ways to get access to the misconfigured host requires root on the intermediate host, but there also is one easy way to get access without needing root on the intermediate host. The easy way to access the host using IPv6 ssh -o ProxyCommand='ssh -W ...


9

kasperd posted a great answer detailed enough for me to learn how I can recover from situation in the question. This answer is the exact step-by-step of how I did it. SSH to server on same physical network Using arp -a or ip neighbor list as root find the MAC address of misconfigured server. Using MAC to link-local converter find link-local for ...


5

IPv6 usually uses a /64 per subnet. Routers send a Router Advertisement or RA to the LAN. This RA contains the basic settings for the LAN like which prefixes (often a single /64) to use, whether the router can be used as a default gateway, whether hosts are allowed to auto-configure themselves and whether there is a DHCPv6 server on the LAN (and what kind of ...


4

Each broadcast domain gets a /64. If you have your hosts isolated, so that there should only be one per subnet, you can assign a whole /64 for a single host. This is mostly used for servers, where you use static IP assignements anyway. If you see the need for SLAAC or stateful DHCPv6, you probably should assign a /64 for a whole network segment, not a single ...


2

You need to load an IP address within the configured subnet of your target, not just within the range that you actually want. If you send a packet to 10.0.0.2 with subnet 255.255.255.248 from, for example, 10.0.0.220, 10.0.0.2 will look at its subnet mask to figure out how to reply. Since .220 is WAAY out of the subnet 255.255.255.248, .2 has to send the ...


2

Actually it's not colliding. One subnet has more specific mask 192.168.0.0/24 has more specific mask than 192.168.0.0/16 For example default gateway is default because it has less specific mask /0. If you add a route to 192.168.0.3/32 via another interface it would have more specific mask than other two routes.


1

So each branch is connected to the main via a "serial link". I suppose what you mean is that at each branch there is a router with 10/100/1G/10G Base-T on one side, and a serial connection on the other, with the serial connection being to some kind of DSL or or other modem or MUX. Then over this serial connection, the router uses PPP to create an IP ...


1

old post but worth a good comment regarding "received" status in the packet monitor. I couldn't find anything on this status in Sonicwall/Dell documentation. Finally got a tech to explain it, actually got a short description... Received means that the packet was consumed by the interface. This means the packet did not make it internally on the network. ...


1

Not entirely clear what you are asking, but I'll take a stab. I think you are saying you were assigned an additional public IP block from your ISP and you want to direct traffic sent to the public IPs to servers located in your LAN. If that's the case, you need to edit the ADSL interface, and add MIP entries that map the public IP to the related LAN IP for ...



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