[HowTo] Your first Debian server

[arzgi]

When I run the SSH command on laptop through root and type the IP Address I set in the /network/interfaces I get "port 22: No route to host".
So yeah I am stuck in this step.

Edit : Tried checking for firewall , ufw is not installed , tried installing it using apt , was getting an error like "Can't resolve "deb.debian.org"".

Now you find the culprit, your network is not configured right. Try

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 ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo ....

and post the result, just remember to use code tags

[DebianNovice]

When I run the SSH command on laptop through root and type the IP Address I set in the /network/interfaces I get "port 22: No route to host".
So yeah I am stuck in this step.

Edit : Tried checking for firewall , ufw is not installed , tried installing it using apt , was getting an error like "Can't resolve "deb.debian.org"".

Now you find the culprit, your network is not configured right. Try

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 ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo ....

and post the result, just remember to use code tags

Hi , I did -> I ran the command on the server I am trying to connect to

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ip a

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1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 
	link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 
	inet 127.0.0.1/8 scope host lo 
		valid_lft forever preferred_ift forever 
	inet6 ::1/128 scope host 
		valid_ift forever preferred_ift forever 
2: eno1: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN group default qlen 1000 
	link/ether 38:60:77:2e:cd:b9 brd ff:ff:ff:ff:ff:ff 
	altname enp0s25 
	inet 192.168.0.107/24 brd 192.168.0.255 scope global eno1 
		valid_lft forever preferred_lft forever
3: enx00e04c534458: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000 
	link/ether 00:e0:4c:53:44:58 brd ff:ff:ff:ff:ff:ff

[arzgi]

Yes, it has no network connection. You have to trouble shoot that before you can expect ssh-server to respond.

[DebianNovice]

Yes, it has no network connection. You have to trouble shoot that before you can expect ssh-server to respond.

Can you help me with that?

[arzgi]

Knowing nothing how your servers is configured, try these first:
https://wiki.debian.org/WiFi
https://wiki.debian.org/NetworkConfiguration

I use only systemd network for wired, and iwd/systemd newtork for wireless, but the older iproute & /etc/network/interfaces and wpasupplicant are still valid options.

Ask more if you need help.

[Hallvor]

Check that your Ethernet cable is in order and properly connected. Then try requesting an IP-address with dhclient <interface name>, for instance:

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# dhclient eno1

[DebianNovice]

Check that your Ethernet cable is in order and properly connected. Then try requesting an IP-address with dhclient <interface name>, for instance:

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# dhclient eno1

I checked , it's looking fine , however when I ran dhclient eno1 nothing happened.

[arzgi]

In Linux no news is good news,

Try again

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ip a

[DebianNovice]

In Linux no news is good news,

Try again

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ip a

Same thing as before except the Interface name got changed for reason , it was eno1 before now it's eth0 and it is still written no carrier.

Edited :

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1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default glen 1000
 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 
 inet 127.0.0.1/8 scope host lo 
 valid_lft forever preferred_lft forever 
 inet6 ::1/128 scope host valid_lft forever preferred.lft forever 

2: eth0: <NO-CARRIER , BROADCAST ,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN group default glen 1000 
link/ether 38:60:77:2e:cd:b9 brd ff:ff:ff:ff:ff:ff 
altname eno1 
altname enp0s25 
inet 192.168.0.107/24 brd 192.168.0.255 scope global eno1 
     valid_lft forever preferred.lft forever 

3: ethl: <BROADCAST , MULTICAST , UP , LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default glen 1000 
link/ether 00:e0:4c:53:44:58 brd ff:ff:ff:ff:ff:ff 
inet 192.168.0.105/24 brd 192.168.0.255 scope global dynamic ethl 
valid_lft 85535sec preferred.lft 85535sec
 inet6 fe80::2e0:4cff:fe53:4458/64 scope link 
valid_lft forever preferred.lft forever 

[arzgi]

It would be better if you would post the result of the command.

Anyways, do you see lights to where the net cable is connected, if not try different cable.

[DebianNovice]

It would be better if you would post the result of the command.

Anyways, do you see lights to where the net cable is connected, if not try different cable.

Done.

[arzgi]

Same thing as before except the Interface name got changed for reason , it was eno1 before now it's eth0 and it is still written no carrier.

Edited :

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3: ethl: <BROADCAST , MULTICAST , UP , LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default glen 1000 
link/ether 00:e0:4c:53:44:58 brd ff:ff:ff:ff:ff:ff 
inet 192.168.0.105/24 brd 192.168.0.255 scope global dynamic ethl 
valid_lft 85535sec preferred.lft 85535sec
 inet6 fe80::2e0:4cff:fe53:4458/64 scope link 
valid_lft forever preferred.lft forever 

Congrats, try pinging google

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$ ping google.com
PING google.com (216.58.211.238) 56(84) bytes of data.
64 bytes from mad01s24-in-f238.1e100.net (216.58.211.238): icmp_seq=1 ttl=60 time=2.02 ms
64 bytes from mad07s20-in-f14.1e100.net (216.58.211.238): icmp_seq=2 ttl=60 time=2.02 ms
64 bytes from mad07s20-in-f14.1e100.net (216.58.211.238): icmp_seq=3 ttl=60 time=1.95 ms

[DebianNovice]

Same thing as before except the Interface name got changed for reason , it was eno1 before now it's eth0 and it is still written no carrier.

Edited :

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3: ethl: <BROADCAST , MULTICAST , UP , LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default glen 1000 
link/ether 00:e0:4c:53:44:58 brd ff:ff:ff:ff:ff:ff 
inet 192.168.0.105/24 brd 192.168.0.255 scope global dynamic ethl 
valid_lft 85535sec preferred.lft 85535sec
 inet6 fe80::2e0:4cff:fe53:4458/64 scope link 
valid_lft forever preferred.lft forever 

Congrats, try pinging google

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$ ping google.com
PING google.com (216.58.211.238) 56(84) bytes of data.
64 bytes from mad01s24-in-f238.1e100.net (216.58.211.238): icmp_seq=1 ttl=60 time=2.02 ms
64 bytes from mad07s20-in-f14.1e100.net (216.58.211.238): icmp_seq=2 ttl=60 time=2.02 ms
64 bytes from mad07s20-in-f14.1e100.net (216.58.211.238): icmp_seq=3 ttl=60 time=1.95 ms

It returns

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Temporary failure in name resolution

[arzgi]

I already suggested https://wiki.debian.org/NetworkConfiguration

Read carefully.

[DebianNovice]

I already suggested https://wiki.debian.org/NetworkConfiguration

Read carefully.

Man , the wiki is way above my pay grade. But fine I will try to read it.

[Hallvor]

This may be a DNS issue:

Please post the following output:

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$ ping -c3 8.8.8.8

And

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$ cat /etc/resolv.conf

And finally

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$ cat /etc/nsswitch.conf

[DebianNovice]

@Hallvor

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 $ping -c3 8.8.8.8
 PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
 From 192.168.0.107 icmp_seq=1 Destination Host Unreachable.
 From 192.168.0.107 icmp_seq=2 Destination Host Unreachable.
 From 192.168.0.107 icmp_seq=3 Destination Host Unreachable.
 
 --- 8.8.8.8 ping statistics ---
 3 packets transmitted , 0 recieved , +3 errors , 100% packet loss , time 2021ms pipe 2
 

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 $cat /etc/resolv.conf
 nameserver 8.8.8.8
 

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 $cat /etc/nsswitch.conf
passwd: files systemd
group: files systemd
shadow: files
gshadow: files

hosts: files dns
networks: files

protocols: db files
services: db files
ethers: db files
rpc: db files

netgroup : nis

[DebianNovice]

This may be a DNS issue:

Please post the following output:

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$ ping -c3 8.8.8.8

And

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$ cat /etc/resolv.conf

And finally

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$ cat /etc/nsswitch.conf

Hi , can you reply?

[Hallvor]

If I knew the answer, I would reply already. Apart from checking that your cable works and is well connected, I have no idea.

You would probably get more and better help on your networking problems if you start a new thread in the appropriate forum: viewforum.php?f=5

I understand that this must be frustrating, but hang in there a little longer and I'll bet someone has an answer.

[DebianNovice]

If I knew the answer, I would reply already. Apart from checking that your cable works and is well connected, I have no idea.

You would probably get more and better help on your networking problems if you start a new thread in the appropriate forum: viewforum.php?f=5

I understand that this must be frustrating, but hang in there a little longer and I'll bet someone has an answer.

Is it possible just to reinstall debian and try doing this again?