Telnet not connecting in Maintenance mode

Well, trying to fix my disk problems, loaded custom firmware, used telnet to connect to Hummy and put into mainteneance mode, all good. But when I reopen the telnet session it fails to connect "can't open port 23". Any ideas? Oh, and box had frozen - had to power off at mains to restart. Checked portal and internet connection ok...
Although I get the maintenance menu in the telnet session, as after restart I couldn't connect I tried fix-disk direct from the command line but that didn't work either. What a pian to get so far then fail :-(
How is your HDR-Fox connected to your network? There is no WiFi support in maintenance mode. Best to connect to your router using an ethernet cable. This is only necessary while in this mode.

I see in another thread that your disk is reporting as failed. I doubt if the fixdisk routine will be able to correct a disk in this condition. I think it is time to copy your recordings on to a USB hard drive, as you suspected, and replace the internal disk. If you post the results of the 'Smart disk' tests (in Web-if under diagnostics) I sure that someone could confirm this for you.
And yes I intend as soon as I get the external drive to copy the recordingd off and 1) reformat the internal HDD (this fixed the same problem 2 yrs ago and b) source a sutable replacement internal disck/

The smart disk tests are:

Disk Information
Model Family Seagate Pipeline HD 5900.2
Device Model ST31000424CS
Serial Number 5VX1XLF3
LU WWN Device Id 5 000c50 03d10e2e7
Firmware Version SC13
User Capacity 1,000,204,886,016 bytes [1.00 TB]
Sector Size 512 bytes logical/physical
Device is In smartctl database [for details use: -P show]
ATA Version is 8
ATA Standard is ATA-8-ACS revision 4
Local Time is Sat Dec 14 15:49:50 2013 GMT
SMART support is Available - device has SMART capability.
SMART support is Enabled

IDNameFlagsRaw ValueValueWorstThreshTypeUpdatedWhen Failed
1 Raw_Read_Error_Rate POSR-- 40411906 111 099 006 Pre-fail Always -
3 Spin_Up_Time PO---- 0 095 093 000 Pre-fail Always -
4 Start_Stop_Count -O--CK 4812 096 096 020 Old_age Always -
5 Reallocated_Sector_Ct PO--CK 6319 001 001 036 Pre-fail Always FAILING_NOW
7 Seek_Error_Rate POSR-- 135865688 081 060 030 Pre-fail Always -
9 Power_On_Hours -O--CK 5174 095 095 000 Old_age Always -
10 Spin_Retry_Count PO--C- 0 100 100 097 Pre-fail Always -
12 Power_Cycle_Count -O--CK 2406 098 098 020 Old_age Always -
184 End-to-End_Error -O--CK 0 100 100 099 Old_age Always -
187 Reported_Uncorrect -O--CK 0 100 100 000 Old_age Always -
188 Command_Timeout -O--CK 2293547532822 100 096 000 Old_age Always -
189 High_Fly_Writes -O-RCK 0 100 100 000 Old_age Always -
190 Airflow_Temperature_Cel -O---K 43 057 043 045 Old_age Always In_the_past
194 Temperature_Celsius -O---K 43 043 057 000 Old_age Always -
195 Hardware_ECC_Recovered -O-RC- 40411906 047 028 000 Old_age Always -
197 Current_Pending_Sector -O--C- 0 100 100 000 Old_age Always -
198 Offline_Uncorrectable ----C- 0 100 100 000 Old_age Offline -
199 UDMA_CRC_Error_Count -OSRCK 0 200 200 000 Old_age Always -

Self-test logs
No.DescriptionStatusRemainingWhenFirst Error LBA
# 1 Short offline Completed: unknown failure 90% 5173 0
Acknowledge any current disk faults.
Rendered in: 0.806 seconds
Sorry - I meant ethernet....
Ethernet should be fine, just make sure that you use the IP address that is shown on the display of the HDR-FOX when you start up in maintenance mode, and use 0000 as the password if requested. You may be flogging a dead horse though: please see my previous post.
We crossed posts again! Your reallocated sector count is >6000 (entry no. 5): your disk is in God's waiting room, I'm afraid. No point in running fixdisk, I would copy your recordings and replace:(

You can reformat the internal drive after copying your files, but this will not fix the reallocated sector count. It may solve the problem for a while, but the disk could fail any time.
There is if you install the right package(s).
Could you point me in the right direction, please. I have the standard packages such as wireless helper installed, but for maintenance mode I have always temporarily used an ethernet WiFi bridge instead of a dongle as it is not convenient for me to use a direct ethernet connection.
I was going to go further and ask "what packages"? I've seen reference to them a couple of times, but not seen where they are nor how to install them.
WebIF >> Package Management

You might also need to set

WebIF >> Settings >> Advanced Settings >> Show development and advanced packages? = Yes

(it defaults to "No" on installation to screen naive users from the nuts & bolts and anything they are best advised not to play with)
Ah ok, I saw the list of downlods when the WebIF first installed, but assumed they were "installed" by default - but clearly not. Ty.
The downloads were installed - they provide the "standard" functionality and there are a load more that are optional which will download and install when required.