Chapter 4 – Troubleshooting
Multi-Tech RouteFinder RF650VPN User Guide
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Q25.
Do I need to add routes for my connected networks ?
A25. No, you never have to add routes for networks in which your RouteFinder is a member. These so-
called "Interface Routes" are automatically added by the RouteFinder itself.
Q26: I have DNAT set up but I cannot connect to the translated services. What's up ?
A26: You may need to set packet filter rules to allow the traffic. When using DNAT, you must allow the
traffic according to the characteristics BEFORE the translation.
For example:
If you translate 1.2.3.4:80 into 192.168.1.10:80, you must allow Any->1.2.3.4 port 80 tcp (http).
When using SNAT, you must allow the traffic according to the characteristics after the translation.
For example:
If you translate src 192.168.10.1 into src 1.2.10.1, you must allow 1.2.10.1 -> any -> any.
(Note that hese are examples only!)
Q27. What does SOCKS stand for?
A27. SOCK-et-S was an internal development name that remained after release.
Q28. How is SOCKS V5 different from SOCKS V4?
A28. SOCKS V4 does not support authentication nor UDP proxy. SOCKS V5 supports a variety of
authentication methods and UDP proxy.
Q29. Does SOCKS V5 work with SOCKS V4?
A29. The SOCKS V5 protocol does not support SOCKS V4 protocol.
Q30. Where can I get SOCKS?
A30. SOCKS V4 implementation is available through anonymous ftp from
ftp://ftp.nec.com:/pub/socks/
.
NEC's SOCKS V5 Reference Implementation of SOCKS V5 (socks5) is available at
ftp://ftp.nec.com:/pub/socks/cgi-bin/download.pl
.
Both packages include clients for telnet, ftp, finger, and whois.
Other clients are available at
ftp://ftp.nec.com:/pub/socks/
and
ftp://ftp.nec.com:/pub/socks/cgi-bin/download.pl
.
Q31. Are there any SOCKS-related mailing lists?
A31. Yes, there are SOCKS-related mailing lists for socks, socks5, and sockscap. To join the SOCKS
mailing list, send an e-mail message to:
with no subject line and a
one line body: subscribe <mailing-list> <[email protected]>
Correspond with members of the list by sending e-mail to:
<mailing-list>@socks.nec.com
.
All three mailing lists are archived at /mail/socks/, /mail/socks5/, and
/mail/sockscap/ .
Q32. Does SOCKS handle UDP?
A32. SOCKS V5 does, SOCKS V4 does not. NEC's SOCKS V5 Reference Implementation includes a
socksified archie client program that is a UDP application.
Q33. How does SOCKS interact with DNS?
A33. For SOCKS version 4.2 and earlier, SOCKS V4 clients MUST resolve local and internet host IP
addresses. Configure DNS so that the SOCKS clients' resolver can resolve the addresses. Multiple
DNS servers require special arrangements.
For the extended SOCKS version 4.3, SOCKS V4 clients can pass the unresolved addresses to the
SOCKS V4 extended servers for resolution.
For SOCKS V5, the clients can pass unresolved host names to SOCKS V5 servers to resolve.
SOCKS will work if the SOCKS V5 client or SOCKS V5 servers can resolve a host.