snmpwalk: add page (#4748)

pages/linux/snmpwalk.md

@@ -0,0 +1,24 @@
+# snmpwalk
+
+> SNMP query tool.
+> More information: <https://linux.die.net/man/1/snmpwalk>.
+
+- Query the system information of a remote host using SNMPv1 and a community string:
+
+`snmpwalk -v1 -c {{community}} {{ip}}`
+
+- Query specific system information on a remote host by OID using SNMPv2 on a specified port:
+
+`snmpwalk -v2c -c {{community}} {{ip}}:{{port}} {{oid}}`
+
+- Query specific system information on a remote host by OID using SNMPv3 and authentication without encryption:
+
+`snmpwalk -v3 -l {{authNoPriv}} -u {{username}} -a {{MD5|SHA}} -A {{passphrase}} {{ip}} {{oid}}`
+
+- Query specific system information on a remote host by OID using SNMPv3, authentication, and encryption:
+
+`snmpwalk -v3 -l {{authPriv}} -u {{username}} -a {{MD5|SHA}} -A {{auth_passphrase}} -x {{DES|AES}} -X {{enc_passphrase}} {{ip}} {{oid}}`
+
+- Query specific system information on a remote host by OID using SNMPv3 without authentication or encryption:
+
+`snmpwalk -v3 -l {{noAuthNoPriv}} -u {{username}} {{ip}} {{oid}}`