Official 2.1 ports drill

Match help-desk tickets (send mail, names, APIPA, shell, share, RDP) to official 2.1 ports; leave Telnet/HTTP/FTP unused.

Match each help-desk ticket to the official 2.1 port/protocol. Leave Telnet, HTTP, and FTP unused for this queue.

Closed list only: map the user sentence onto one CompTIA 220-1201 v3.0 row. Wrong protocol on a familiar number fails the check.

Sales cannot send

Outlook receives fine. New messages sit in Outbox with a timeout to smtp.company.example.

Internet looks down

Users type names. Ping 8.8.8.8 works. Ping by FQDN fails on every station.

Whole floor on 169.254

Three new desks show APIPA. Same VLAN yesterday leased fine from the scope.

Replace cleartext admin

Switch still offers Telnet. Ticket: put an encrypted remote shell on the management VRF.

Mapped drive path not found

\\filesrv\sales fails with 'network path not found' after a firewall change. Name resolves.

Help desk RDP timeout

mstsc hangs, then fails. Instant refuse is absent — long delay smells like a filter.

Still on the bench

SMTP · TCP 25 — Send path between mail servers; A+ number is 25.
DNS · TCP/UDP 53 — IP works, names fail — resolver or port 53.
DHCP · UDP 67/68 — Server 67, client 68; APIPA means the lease never completed.
SSH · TCP 22 — Encrypted remote shell replaces Telnet 23.
SMB/CIFS · TCP 445 — Modern Windows file share; not NetBIOS 137–139 first.
RDP · TCP 3389 — Remote Desktop; long timeout often means 3389 filtered.
Telnet · TCP 23 — Cleartext shell — a finding, not the replacement.
HTTP · TCP 80 — Cleartext web; does not fix mail, names, leases, shell, share, or RDP.
FTP · TCP 20/21 — Legacy file transfer — not the Windows share or mail send path.